<p><strong>🎤 Presenter:</strong> <strong>Darshil Patel </strong>(University of North Dakota)</p><p>💾 <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/paper/32781"><strong>PDF presentation</strong></a></p><h3><strong>Abstract</strong></h3><p><strong>Flow-modulated two-dimensional gas chromatography (GCxGC) is an excellent solution for low-boiling point compounds that are difficult to separate by thermal modulation without cryogens. Pairing a quadrupole mass spectrometer (QMS) with GCxGC can offer better dynamic range, increased sensitivity, and lower cost to GCxGC applications, however, many MS instruments can not accept the high flow rate coming from flow-modulated GCxGC.</strong></p><p>In this study, a flow modulator was installed in a QMS system designed to accept high GC flow rates, and tested using perfume and pesticide applications. Results detailing the sensitivity and effectiveness of the QMS system with high GCxGC flow input will be discussed, as well as a comparison to thermal modulation results from the same system.</p><h3><strong>Video Transcription</strong></h3><p>Darshil Patel opened the presentation by discussing the concept of human odor and its transition after death. He explained that living humans possess a unique antemortem scent composed of volatile organic compounds (VOCs) released from the skin through microbiome activity, sweat, and breath. After death, this odor profile gradually changes into what is known as postmortem odor. The exact timing and progression of this transition remain poorly understood.</p><p>The presenter emphasized the practical importance of understanding this transition in disaster victim recovery operations. Search-and-rescue dogs are trained to detect odors associated with living individuals, whereas human remains detection dogs are trained to identify postmortem odors. Determining when antemortem odor disappears and postmortem odor becomes dominant can improve the deployment and training of these specialized canine units.</p><h4><strong>Research Objectives</strong></h4><p>The study focused on the early postmortem period in humans and aimed to:</p><ul><li>Characterize VOCs released during the fresh stage of decomposition</li><li>Track the evolution of donor VOC profiles over time</li><li>Identify the transition point between antemortem and postmortem odor</li></ul><p>Patel noted that prior to this research, only one study involving pig remains had examined odor transition during decomposition.</p><h4><strong>Human Decomposition Overview</strong></h4><p>The presenter reviewed the five major stages of decomposition:</p><ol><li>Fresh stage</li><li>Bloat stage</li><li>Active decay</li><li>Dry remains</li><li>Skeletonization</li></ol><p>The research concentrated specifically on the fresh stage, encompassing the earliest postmortem interval.</p><p>During this stage, several immediate physiological changes occur:</p><ul><li><strong>Algor mortis</strong> – cooling of the body</li><li><strong>Rigor mortis</strong> – stiffening of muscles</li><li><strong>Livor mortis</strong> – pooling of blood</li></ul><p>At the microscopic level, decomposition involves:</p><ul><li><strong>Autolysis</strong> – cellular breakdown</li><li><strong>Putrefaction</strong> – microbial degradation of tissues</li></ul><p>These processes generate VOCs that collectively contribute to postmortem odor.</p><h3><strong>Experimental Design</strong></h3><h4><strong>Human Donors and Study Sites</strong></h4><p>The study examined three human donors (cadavers) and monitored their VOC profiles both:</p><ul><li>In the morgue</li><li>At the REST outdoor decomposition research facility in Canada</li></ul><p>REST is currently the only Canadian outdoor human decomposition research facility.</p><h4><strong>VOC Sampling Procedures</strong></h4><h5>Morgue Sampling</h5><p>Upon arrival at the morgue:</p><ul><li>Bodies arrived enclosed in shroud-like materials or body bags</li><li>The bags were briefly opened to release VOCs accumulated during transportation</li><li>Bags were resealed for 20 minutes to allow VOC accumulation</li><li>VOCs were collected using:<ul><li>Tenax TA/Carbograph sorbent tubes</li><li>Active low-flow sampling pumps</li></ul></li><li>Sampling conditions:<ul><li>10-minute collection</li><li>100 mL/min flow rate</li></ul></li></ul><p>Background and body-bag controls were also collected.</p><h5>REST Facility Sampling</h5><p>At the outdoor decomposition facility:</p><ul><li>Donors were placed unclothed on their backs</li><li>Anti-scavenging cages protected remains from animals</li><li>During sampling:<ul><li>An aluminum hood was placed over the donor</li><li>VOCs accumulated for 20 minutes</li><li>VOCs were then collected onto sorbent tubes</li></ul></li></ul><p>Sampling conditions matched those used in the morgue to maintain methodological consistency.</p><h4><strong>Instrumentation and Analytical Workflow</strong></h4><h5><strong>GC×GC-TOFMS Analysis</strong></h5><p>Samples were analyzed using:</p><ul><li><a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/products/37"><strong>LECO Pegasus BT system</strong></a></li><li>Mid-polar column combination with Stabilwax columns</li></ul><p>An internal standard was injected into every sample.</p><h5><strong>Decomposition Standard Mix</strong></h5><p>Researchers also analyzed a decomposition standard mixture containing 25 compounds previously reported in human decomposition studies. This standard was used to monitor method performance and VOC evolution throughout the study.</p><h4><strong>Data Processing Workflow</strong></h4><p>Initial data processing was conducted using <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/products/41"><strong>ChromaTOF software</strong></a> with the following criteria:</p><ul><li>Minimum signal-to-noise ratio: 100</li><li>Spectral similarity match: ≥850</li></ul><p>Further processing was completed in <strong>RStudio</strong>.</p><h5><strong>Data Filtering Steps</strong></h5><p>The workflow included:</p><ul><li>Exporting chromatographic peak tables as CSV files</li><li>Classification into experimental and control samples</li><li>Pairwise peak alignment</li><li>Normalization to internal standards</li><li>Removal of background contaminants</li><li>Filtering out siloxanes and column-derived artifacts</li><li>Manual verification using:<ul><li>ChromaTOF</li><li>NIST libraries</li></ul></li></ul><p>Final datasets contained normalized peak areas for validated compounds only.</p><h4><strong>Decomposition Observations</strong></h4><p>The three donors displayed visibly different decomposition trajectories despite being exposed to similar environmental conditions. Patel emphasized that decomposition is highly variable and no two bodies decompose identically.</p><h4><strong>Early Postmortem VOC Profiles</strong></h4><p>The early decomposition VOC profiles contained multiple chemical classes. The most abundant were:</p><ul><li>Nitrogen-containing compounds</li></ul><p>Acids were detected at relatively low abundance, which aligned with existing literature indicating acids typically become prominent during later decomposition stages.</p><h4><strong>Identification of VOC Categories</strong></h4><p>The researchers compared their VOC dataset with published literature describing:</p><ul><li>Antemortem VOCs from living humans</li><li>Postmortem VOCs from decomposition studies</li></ul><p>This comparison identified:</p><ul><li>24 VOCs associated with antemortem odor</li><li>35 VOCs associated with postmortem odor</li></ul><p>Additionally, a third category emerged:</p><ul><li>VOCs present in both antemortem and postmortem periods</li></ul><p>These compounds were termed:</p><h5><strong>“Transmortem VOCs”</strong></h5><p>In living humans, these VOCs were linked to skin emissions, while in decomposition they appeared associated with microbial breakdown processes.</p><h4><strong>Transition of Odor Profiles</strong></h4><p>The presenter analyzed VOC evolution over time using accumulated degree days (ADD), calculated from ambient temperature measurements.</p><p>Key observations included:</p><ul><li>Antemortem VOCs persisted throughout the early postmortem period</li><li>Transmortem VOCs were consistently detected</li><li>Postmortem VOCs increased sharply during later experimental days</li></ul><p>This pattern was observed consistently across all three donors.</p><h4><strong>Transition Point</strong></h4><p>Visual observations and chemical data both indicated that:</p><ul><li>Around experimental day 3</li><li>Bodies began transitioning toward the bloat stage</li><li>Postmortem VOC abundance increased substantially</li></ul><p>The study therefore proposed that the odor transition begins approximately around day 3 of decomposition under the tested outdoor conditions.</p><h4><strong>Implications for Detection Dogs</strong></h4><p>The persistence of antemortem and transmortem VOCs during early decomposition may explain why search-and-rescue dogs occasionally alert to deceased victims.</p><p>Patel suggested that overlapping odor signatures could create confusion for canine detection systems in disaster scenarios.</p><h4><strong>Conclusions</strong></h4><p>The study demonstrated that:</p><ul><li>The transition from antemortem to postmortem odor can be chemically monitored</li><li>Postmortem VOCs become dominant as decomposition progresses</li><li>Environmental decomposition studies provide valuable insight into odor evolution</li></ul><p>Patel emphasized that significantly more research is needed across:</p><ul><li>Different environments</li><li>Seasonal conditions</li><li>Additional donor populations</li></ul><p>to fully understand human odor transition after death.</p><blockquote><p><strong>This text has been automatically transcribed from a video presentation using AI technology. It may contain inaccuracies and is not guaranteed to be 100% correct.</strong></p></blockquote>

Identifying the transition from antemortem to post-mortem odor in cadavers cadavers in an outdoor environment (Darshil Patel, MDCW 2026)

<p><strong>Our Library never stops expanding. What are the most recent contributions to LabRulezGCMS Library in the week of 18th May 2026? Check out new documents from the field of the gas phase, especially GC and GC/MS techniques!</strong></p><blockquote><p><span style="font-size:20px;">👉 </span><a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/library"><span style="font-size:20px;"><strong>SEARCH THE LARGEST REPOSITORY OF DOCUMENTS ABOUT GCMS AND RELATED TECHNIQUES</strong></span></a></p></blockquote><blockquote><p><strong>👉 Need info about different analytical techniques?</strong> Peek into <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/library"><strong>LabRulezLCMS</strong></a> or <a target="_blank" rel="noopener noreferrer" href="https://icpms.labrulez.com/library"><strong>LabRulezICPMS</strong></a> libraries.</p></blockquote><p>This week we bring you application note by<strong> Shimadzu, </strong>poster by <strong>MDCW / InfoMass</strong> and brochure by <strong>Thermo Fisher Scientific!</strong></p><h3><strong>1. MDCW / InfoMass: Development of a Fully Software-Controlled, Alignment-Free Loop-Delay Thermal Modulator for GC×GC</strong></h3><ul><li>Poster</li><li><a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/P_22_Wu_0662310ba1.pdf"><strong>Full PDF for download</strong></a></li></ul><section><div><div><div><div><div><div><p>Loop-delay thermal modulation is a well-established approach for comprehensive two-dimensional gas chromatography (GC×GC) and inherently requires precise alignment of the modulation loop. In conventional designs, this alignment must be performed manually by the user, a process that is difficult, time-consuming, and often unreliable, as the modulation loop can shift during operation due to repeated hot-jet gas pulses, leading to misalignment and degraded modulation performance. This work addresses these limitations through a redesigned loop-delay modulator in which precise alignment is ensured intrinsically by the modulator geometry, eliminating user-dependent alignment while improving mechanical stability and operational robustness.&nbsp;</p><h4><strong>Key Improvements &nbsp;</strong></h4><ul><li>Intrinsic loop alignment by geometry, eliminating user-performed alignment&nbsp;</li><li>Mechanically secured loop holder, preventing loop movement during hot-jet gas pulses &nbsp;</li><li>Easy loop winding, simplifying installation and replacement&nbsp;</li><li>No moving mechanical parts, improving robustness and reliability&nbsp;</li><li>Fully software-controlled modulation, including hot-jet temperature, valve timing, modulation period, and cold-jet gas flow&nbsp;</li><li>Programmable cold-jet gas flow, providing indirect control of modulation temperature&nbsp;</li><li>Programmable modulation period, enabling flexible optimization for correcting peak wrap-around.&nbsp;</li><li>Independent of GC controls, enabling standalone operation</li></ul><h4><strong>Installation and Compatibility&nbsp;</strong></h4><p>Precise loop alignment is automatically achieved through the modulator’s mechanical design. The loop remains fixed during operation and is not affected by hot-jet gas pulses. The compact, modular system is compatible with most commercial gas chromatographs and operates independently of GC control hardware and software</p><h3><strong>2. Shimadzu: Simultaneous Analysis of Methoxypyrazines in Processed Tomato Products by GC–MS/MS with SPME Arrow</strong></h3><ul><li>Application note</li><li><a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/an_01_01141_en_78979e911f.pdf"><strong>Full PDF for download</strong></a></li></ul><h5><strong>User Benefits</strong></h5><ul><li>SPME Arrow enables high-sensitivity determination of methoxypyrazines in processed tomato products by efficiently preconcentrating volatile compounds.</li><li>GC–MS/MS in MRM mode provides isomer selectivity and reliable quantitation of methoxypyrazines, even in complex sample matrices.</li><li>The AOC-6000 Plus multifunctional autosampler automates SPME Arrow injection to increase throughput and improve repeatability.</li></ul><p>In processed vegetable foods and beverages, small changes in aroma and flavor can strongly affect perceived quality. For processed tomato products in particular, a vegetative (green) or hay-like off-flavor is often a key concern. This off-flavor has been linked to methoxypyrazines present at very low levels (ppt levels around 10 ng/L).&nbsp;</p><p>Methoxypyrazines include many closely related analogs. Therefore, a robust quantitative method must deliver both high sensitivity and sufficient selectivity (and/or separation) to handle real matrices.&nbsp;</p><p>In this article, five methoxypyrazines previously detected in vegetables (Table 1) were analyzed using a GC-MS/MS system with the <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/library?mainauthorItems=1&amp;search=SPME+Arrow"><strong>SPME Arrow</strong></a> injection method. The method provides stable quantitation at ng/L (ppt) levels, even in complex, interference-rich samples.</p><h4><strong>System Configuration</strong></h4><p>All measurements were performed with a <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/library?mainauthorItems=1&amp;search=GCMS-TQ8040+NX"><strong>GCMS-TQ8040 NX triple quadrupole</strong></a> GC–MS/MS system equipped with an <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/library?mainauthorItems=1&amp;search=AOC6000+Plus"><strong>AOC6000 Plus</strong></a> multifunctional autosampler (Fig. 1).&nbsp;</p><p>The AOC-6000 Plus supports multiple sample introduction techniques—including liquid injection, headspace, and SPME— and can switch between them automatically based on the method. This flexibility makes it well suited for laboratories that handle many sample types and applications.</p><h4><strong>Conclusion</strong></h4><p>By using an AOC-6000 Plus autosampler with the GCMS-TQ8040 NX system and optimizing the SPME Arrow injection method, five off-flavor methoxypyrazines were successfully measured at ng/L (ppt) levels. Using MRM improved selectivity and enabled isomer-specific analysis, including differentiation of isomers that are difficultto separate by GC alone.&nbsp;</p><p>When applied to real processed tomato products, the method enabled quantitation of 2-methoxy-3,5-dimethylpyrazine (MDMP). This system reduces matrix interference and provides high sensitivity for trace-level off-flavor compounds.</p><h3><strong>3. Thermo Fisher Scientific: Sentinel PRO 710 environmental mass spectrometer Precise real time gas analyzer for toxic volatile organic compounds</strong></h3><ul><li>Product specification</li><li><a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/sentinel_pro_710_spec_sheet_en_886523bfc2.pdf"><strong>Full PDF for download</strong></a></li></ul><p>The <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/library?mainauthorItems=3&amp;search=Sentinel+PRO"><strong>Thermo Scientific™ Sentinel PRO Environmental Mass Spectrometer </strong></a>is a highly reliable and versatile gas analyzer ideal for reporting the presence of toxic VOCs from fugitive emissions in industrial settings to ensure worker safety.&nbsp;</p><h5><strong>Fugitive emissions of toxic VOCs&nbsp;</strong></h5><p>Wherever there is potential danger for fugitive emissions of toxic organic vapors from a chemical production unit, regulating authorities often require plants to keep records of ambient vapor concentrations to protect workers from exposure. Various forms of capture include evacuated vessels, organic vapor monitors, or purge and trap devices, all of which require samples to be sent for analysis. Alternatively, electrochemical sensors or open path FT-IR spectroscopy can provide more immediate results. However, none of these technologies are capable of providing the spatial and temporal resolution required to qualify as actionable information.&nbsp;</p><h5><strong>Analytical platform&nbsp;</strong></h5><p>The primary feature of the Sentinel PRO mass spectrometer is the magnetic sector analyzer. This field-proven technology has demonstrated the strongest performance for industrial on-line gas analysis. Magnetic sector technology offers precision, accuracy, long intervals between calibrations. The new touchscreen interface further enhances usability, providing intuitive in-person operation, simplified maintenance, and real-time data viewing. Multi-role user permissions ensure security and control allowing operators to customize settings based on their specific needs.&nbsp;</p><h5><strong>Comprehensive data collection&nbsp;</strong></h5><p>With speed and precision, the Sentinel PRO analyzer monitors all the critical areas for short-term exposure levels of toxic VOCs, and also provides accurate and time-weighted average exposure data. With a high number of sample points available, many can be located close to potential leak points such as valve stems, etc., enabling leak detection and correction before any toxic hazard is created.&nbsp;</p><h5><strong>Membrane inlet mass spectrometry&nbsp;</strong></h5><p>The analyzer is fitted with a membrane inlet to reduce the pressure of the sample air from atmospheric to the working pressure of the enclosed ion source. This allows a method of sample introduction that greatly enhances the system’s sensitivity to VOCs. Since the membrane is more permeable to VOCs than to major air gases, it provides enrichment by several orders of magnitude, enabling detection as low as 5 ppb (species dependent) permits easy membrane replacement during annual routine maintenance to minimize downtime and increase productivity.</p></div></div></div></div></div></div></section>

News from LabRulezGCMS Library - Week 21, 2026

<p><strong>There are various ways to categorize gas chromatographic detectors. The main classifications include:</strong></p><ol><li>Detectors sensitive to concentration vs mass flow rate sensitive detectors</li><li>Selective vs universal (non-selective) detectors</li><li>Non-destructive vs destructive detectors</li></ol><p>A<strong> concentration-sensitive detector </strong>is one in which the <strong>peak response depends on the absolute analyte concentration</strong>. At constant concentration, the response is constant regardless of change in flow rate of the carrier gas. If the flow rate changed, there will be no effect on the peak height of the analytes.</p><p>On the other hand, a <strong>mass flow rate sensitive detector</strong> is one in which the<strong> peak response changes with the flow rate of the carrier gas</strong>. In other words, if the carrier gas flow rate is decreased, there will be a proportional decrease in peak height.</p><p><strong>Universal detectors </strong>can see a wider variety of compounds, whilst a<strong> selective detector </strong>is very specific to certain chemical elements or groups.<strong> Non-destructive detectors</strong> maintain the same structure of the analytes as they had whilst passing through the column, while<strong> destructive detectors </strong>break down the actual molecule to produce signals.</p><p>In GC analysis there is<strong> not much significance</strong> if the detector is<strong> destructive or non-destructive </strong>as there is no <strong>preparative work involved</strong>.</p><p><strong>Electron capture detectors</strong> (<strong>ECD</strong>) are <strong>mass flow dependent detectors selective to electronegative elements and they are also non-destructive.</strong> ECD is actually the go-to and most sensitive detector for the analysis of electronegative compounds.</p><p>The carrier gas is ionized by an electron source such as <strong><sup>3</sup>H </strong>or <strong><sup>63</sup>Ni</strong>. A low-energy stream of electrons produces a <strong>steady current </strong>that is magnified and measured. The<strong> current decreases </strong>when an electron-capturing compound enters the detector. Loss of electrons by the electronegative compound is measured as the signal.</p><p>ECD can detect from the picogram to <strong>nanogram level of concentration</strong>. As ECD is selective for electronegative compounds, it is the go-to detector for <strong>halogenated compounds, nitrogen-, oxygen-, and carbonyl group-containing compounds</strong>.</p><h4><strong>Points to Remember About ECD</strong></h4><ul><li>The ECD detector has a radioactive element in it. Maintenance of the detector should be performed only by qualified professionals with appropriate radioactive shielding. Hardware disposal is strictly regulated by local legislation.</li><li>The ECD is compatible with ultra-high-purity nitrogen and helium as the carrier gas.</li><li>Since the detector is a mass flow rate detector, there is a proportional impact on peak area and peak height with change in flow rate. The method should be run under constant flow mode for quantitative analysis.</li><li>Nitrogen or argon-methane mixture can be used as makeup gases. The makeup gas flow and composition should be optimized for higher sensitivity and maintained constantly between consecutive runs to obtain reproducible quantitative results.</li><li>The detector should operate at the temperature mentioned in the detector’s user manual. Usually, the upper limits are 350–400 °C, depending on the manufacturer and model. Most ECDs are equipped with automatic shut-down if the temperature limit is exceeded.</li><li>The carrier gas used for analysis should be free of oxygen, moisture, and halocarbons to extend detector lifetime and avoid baseline problems.</li></ul><p>ECDs can be baked out at higher temperatures to clean them. However, the<strong> bakeout temperature should not exceed the maximum limit </strong>mentioned in the detector’s user guide. Since ECD contains a radioactive beta particle source, no attempt should be made to<strong> clean the detector mechanically</strong>.</p>

What You Need to Know About Electron Capture Detectors

Article

Application

Academy

Video

Presentation

Poster

The Multidimensional Chromatography (MDC) Workshop draws experts in this exciting field to share and discuss their research.

The Multidimensional Chromatography Workshop

Everything from the world of analytical chemistry in one place. We connect people in solving their problems. At Labrulez you will find all the necessary information easily, quickly and clearly. Stop searching and start finding.

LabRulez

Phenomenex is a global technology leader committed to developing novel analytical chemistry solutions that solve the separation and purification challenges of researchers in industrial, government and academic laboratories.

Phenomenex

Agilent Technologies

AZoM

GERSTEL

LECO

Restek Corporation

SelectScience

<p><strong>Spatially offset Raman spectroscopy (SORS), provides a powerful and non-destructive approach for identifying materials without opening packages or containers. However, measurement success depends strongly on sample characteristics, container materials, and testing conditions. This webinar presents an experience-based overview of what SORS-enabled Raman spectroscopy can and cannot reliably measure using the Agilent Vaya Raman spectrometer as a representative platform. We will discuss classes of materials that are Raman-inactive or weak, samples prone to fluorescence or low signal, and common container materials that interfere with or block Raman measurements. Practical guidance will be provided on container thickness, color, and composition, as well as when black shielding or ambient light control is required. The session will help users quickly assess feasibility, set realistic expectations, and determine when Raman—or an alternative technique such as FTIR—is the appropriate analytical choice.</strong></p><blockquote><p><strong>Presenter: </strong>Yanqia Wang, PhD (Application Engineer, Molecular Spectroscopy, Agilent Technologies, Inc.)</p><p>Dr. Yanqia Wang started working for Agilent Technologies Inc. as a FTIR application Engineer in 2013, providing pre-&amp;post-sale application support. The products he covers from Bench-top FTIR microscopes to various Mobile FTIR spectrometers. Dr. Wang received his PhD of analytical chemistry from Duke University in 2004, doing dynamic IR spectroscopy research. Then he joined Fitzpatrick Center for Photonics at Duke University, doing Tissue Raman spectrometer instrumentation. Since 2007, Dr. Wang worked for Avery Dennison Corp. as a spectroscopist, providing molecular analytical support to the research &amp; development.</p></blockquote>

Agilent Technologies: Molecular spectroscopy webinars

Seeing Through the Barrier: Practical Limits and Best Practices for Raman Sample, Container, and Test Conditions

Webinar on SORS Raman feasibility with Agilent Vaya. Learn limits, container effects, fluorescence challenges, and when FTIR is the better alternative.

Practical Limits and Best Practices for Raman

<h4><strong>Automated Stir Bar Sorptive Extraction with extended phase options for an even broader range of applications</strong></h4><p><strong>In this webinar, Frank Jacobs shows how GERSTEL automates the SBSE workflow with AutoTwister, from extraction through thermal desorption, enabling reproducible, efficient, and sensitive analyses.</strong></p><p>In addition, another key topic will be presented: 4 new Twister phases designed to specifically expand the application range of Twister.</p><p>Alongside the proven PDMS phase, 4 additional phase options are now available to better cover more polar, mixed, or particularly demanding analyte profiles. This webinar provides a practical overview of how SBSE can be adapted even more flexibly to different analytical requirements.</p><p>Register now for the webinar and discover how AutoTwister and new Twister phases make SBSE even more versatile and powerful for modern laboratory workflows.</p><blockquote><p><strong>Presenter: </strong>Frank Jacobs, R&amp;D GERSTEL GmbH&amp;Co.KG</p></blockquote>

GERSTEL: AutoTwister and 4 New Twister Phases: Expanding the SBSE Capabilities

AutoTwister and 4 New Twister Phases: Expanding the SBSE Capabilities

In this webinar, Frank Jacobs shows how GERSTEL automates the SBSE workflow with AutoTwister, from extraction through thermal desorption.

AutoTwister Expanding SBSE Capabilities

<p><strong>Pesticide residue testing in complex food and botanical matrices pushes GC‑MS/MS systems to their limits. Heavy co‑extracted interferences, diverse analyte chemistries, and increasing sensitivity requirements can overwhelm traditional workflows. Challenging matrices such as roots, spices, and oils rapidly degrade standard GC columns, driving up maintenance and slowing laboratory productivity.</strong></p><p>In this SelectScience® webinar, discover a new approach to tackling these high‑matrix challenges. Our experts will share data from a study evaluating an advanced GC column engineered for long‑term robustness and matrix resilience, delivering stable retention times, improved peak shape, and strong signal‑to‑noise across thousands of real‑world injections.</p><p>Residue and pesticide testing specialist Carlos Parra of NOW Foods, alongside Colton Myers from Restek Corporation, will discuss how this innovative design boosts sensitivity and extends column lifetime to help labs achieve cleaner, more confident pesticide results.¨</p><h4><strong>Who should attend?</strong></h4><ul><li>Food Analysis Scientists</li><li>Lab Chemists</li><li>Professionals in food pesticide testing</li><li>Analytical chemists</li><li>Food safety professionals</li></ul><h4><strong>What will this webinar cover?</strong></h4><ul><li>Tips and tricks from industry experts on multi-pesticide analysis by GC MS/MS.</li><li>How novel GC technology and formats can bring sensitivity and peak shape improvement.</li><li>How to reduce MS maintenance and improve lab throughput.</li><li>How to handle challenging food matrices and extend column lifetime.</li></ul><blockquote><p><strong>Speaker:&nbsp;</strong>Carlos Parra (QC MS Specialist II, NOW Foods)</p><p>Carlos Parra is a QC MS Specialist II at NOW Foods where he has spent the past five years specializing in contaminant analysis, including pesticide residue testing, using GC-MS/MS, LC-MS/MS, Orbitrap MS, and TOF MS technologies. He brings over 21 years of experience as an analytical chemist across multiple industries – pharmaceuticals, packaging, cosmetics, medical devices, and food. From this experience he has developed deep expertise in mass spectrometry, method development, and complex analytical workflows.</p><p><strong>Speaker:&nbsp;</strong>Colton Myers (Product Manager, Restek Corporation)</p><p>Colton Myers is a product manager for GC columns at Restek Corporation with over 10 years of experience in research and development. He specializes in driving new GC column technologies from concept to market, combining deep technical expertise with a strong focus on innovation and commercialization. He has a BS in chemistry from Juniata College and a Master of Management in Corporate Innovation and Entrepreneurship from Penn State University.</p><p><strong>Moderator:&nbsp;</strong>Olivia Long (Editorial Team, SelectScience)</p><p>As a Science Editor specializing in pharmaceutical and applied research, Olivia Long brings a strong background in experimental biology and scientific communication. She holds a B.Sc. in Pharmacology from the University of Southampton and an M.Sc. in Neuroscience from the University of Sussex, where she investigated neuro‑oncology drug‑resistance pathways using patient‑derived cell models.</p><p>Her broader laboratory experience spans R&amp;D hygiene testing, controlled environment entomology workflows, and protocol development, giving her a practical understanding of diverse analytical and research environments. She is dedicated to translating complex science into clear, engaging content for researchers and industry professionals.&nbsp;</p></blockquote>

Select Science: Improving multiresidue pesticide GC‑MS/MS reliability through GC column longevity

Improving multiresidue pesticide GC‑MS/MS reliability through GC column longevity

How this innovative design boosts sensitivity and extends column lifetime to help labs achieve cleaner, more confident pesticide results.

Improving multiresidue pesticide GC‑MS/MS reliability

<p><strong>Gas chromatography is a powerful tool for volatile and semi-volatile species in battery materials, but its application faces significant challenges. Many electrolyte components and degradation products are thermally labile or highly reactive, leading to on-column decomposition and poor quantification.</strong></p><p>Complex matrices, including salts and additives, cause adsorption, peak tailing, and column fouling, demanding frequent maintenance and careful selection of stationary phases. Moisture and trace impurities from sample handling can obscure low-level analytes critical to performance and safety.</p><p>This webinar will focus on addressing some of those challenges for successful, repeatable and reliable analysis.</p><blockquote><p><strong>Speaker: </strong>William Collin (Senior Researcher, General Motors R&amp;D)</p></blockquote>

LECO: Effective Utilization of GC and GCxGC in Battery Materials Characterization

Effective Utilization of GC and GCxGC in Battery Materials Characterization

This webinar will focus on addressing some of those challenges for successful, repeatable and reliable analysis.

GC and GCxGC in battery materials

<p><strong>In this webinar, you will learn about the analytical techniques and best practices for testing polymer-based advanced materials, from early R&amp;D through to production quality control. Discover how to leverage both macro- and micro-level IR analysis to optimise formulations and enhance material performance. Learn how to maximise the value of your thermal analysis instrumentation to diagnose production issues, evaluate VOCs, and support reverse‑engineering projects.</strong></p><p>This webinar is highly relevant to key industrial markets working with adhesives, sealants, coatings, paints, and 3D‑printing additives. Technologies covered will include <strong>FTIR, TGA</strong>, and hyphenated techniques such as <strong>TG‑IR and TG‑IR‑GC/MS.</strong></p><p>Join the free webinar with certification of attendance and CPD points now. &nbsp;</p><h4><strong>Attend the Webinar to Learn:</strong>&nbsp;</h4><ul><li>Which analytical techniques and best practices are most effective for characterising polymer‑based advanced materials</li><li>How to apply macro‑ and micro‑level IR analysis, alongside thermal analysis, to optimise formulations, enhance performance properties, and diagnose production issues.</li><li>Benefits of hyphenated techniques (TG‑IR and TG‑IR‑GC/MS) for real‑world applications</li></ul><h4><strong>This Webinar is Ideal For:</strong></h4><ul><li>Materials scientists</li><li>Polymer researchers</li><li>Lab managers</li><li>Meet the Webinar Speakers</li></ul><blockquote><p><strong>Speaker: </strong>Nicholas Lancaster (Application scientist, PerkinElmer)</p><p>Nic is an application scientist in the R&amp;D team at PerkinElmer. With a background in materials characterization using FTIR &amp; UV/Vis spectroscopy, thermal analysis as well as chromatography and mass spectrometry he has been a part of PerkinElmer since 2014. He joined PerkinElmer as a Field Application Scientist (FAS) in South Africa, and now works from the UK developing laboratory workflow solutions for a range of end markets including renewable energy, lubricants, and advanced materials.</p><p><strong>Speaker: </strong>Dr Krystelle Mafina (Product leader, PerkinElmer)</p><p>Krystelle is a product leader at PerkinElmer, overseeing the thermal (TEA) analysis business. She holds a PhD in Biomedical Biomaterials Science and is a Chartered Engineer (CEng) and Chartered Scientist (CSci) with a strong background in materials science. A member of the Institute of Materials, Minerals, and Mining (IOM3) since 2009; a committee member since 2019, Krystelle is committed to continuous professional development and was recently made 'Fellow' of the institute. Her blend of scientific knowledge and industry experience makes her a valuable contributor to PerkinElmer and the wider scientific community.</p></blockquote>

Azom: Analysis Masterclass for Polymer-Based Advanced Materials

Analysis Masterclass for Polymer-Based Advanced Materials

Which analytical techniques and best practices are most effective for characterising polymer‑based advanced materials

<h3><strong>Real-Time Process Insights for Oil, Gas, &amp; Future Fuels with Raman Spectroscopy</strong></h3><h4><strong>A 5-Part Webinar Series</strong></h4><p>As the energy sector shifts toward more complex and dynamic processes, real-time analytics are essential for maintaining control, efficiency, and product quality. This 5-part webinar series explores how process Raman spectroscopy and integrated measurement solutions enable fast, in-line analysis across oil &amp; gas, power generation, and emerging energy applications.</p><h5><strong>What we'll cover:</strong></h5><p>Each session highlights practical approaches to improving process visibility, reducing analytical delays, and supporting faster decision-making for:</p><ul><li>Natural gas</li><li>Refined fuels</li><li>Hydrogen</li><li>Sustainable aviation fuels</li><li>Carbon capture</li><li>Power generation</li><li>Emerging energy applications</li></ul><h5><strong>This Series is Ideal For:</strong></h5><p>Process, operations, and instrumentation professionals across oil &amp; gas, power generation, and emerging energy sectors, including engineers, plant and refinery managers, and technical specialists involved in process optimization and analytical measurement.</p><h5><strong>Join the Webinars To:</strong></h5><ul><li>Understand how real-time, in-line analytics improve process control and efficiency</li><li>Learn how process Raman simplifies and accelerates gas and liquid analysis</li><li>Explore alternatives to traditional methods such as gas chromatography</li><li>See how integrated measurement solutions enhance operational visibility</li><li>Gain insight into applications across conventional and next-generation energy systems</li></ul><h4><strong>Webinar 2: Real-Time Raman Gas Analysis for Today’s Power Generation: Natural Gas, Hydrogen Blending, and Fusion</strong></h4><p>In today’s power generation landscape, fuel composition, across natural gas, hydrogen blends, and emerging fusion environments, matters more than ever. Variability in these gases can directly impact turbine efficiency, emissions, and overall performance - making fast, accurate analysis essential.</p><p>This webinar highlights how process Raman spectroscopy delivers real-time, inline measurement of gas composition without the delays and complexity of traditional methods. From conventional natural gas streams to hydrogen blending and next-generation nuclear fusion applications, Raman enables smarter, faster decisions that keep operations running at peak performance.</p><p>Join us to see how this technology is advancing power generation through simplified deployment, minimal maintenance, and immediate results across a wide range of energy applications.</p><blockquote><p><strong>Speaker: </strong>Parag Borgaonkar (Senior Business Development Specialist, Thermo Fisher Scientific)</p></blockquote>

Thermo Fisher Scientific: Real-Time Process Insights for Oil, Gas, & Future Fuels with Raman Spectroscopy

Real-Time Raman Gas Analysis for Today’s Power Generation: Natural Gas, Hydrogen Blending, and Fusion

how process Raman spectroscopy enables real-time gas composition analysis for natural gas, hydrogen blending, and advanced power generation applications.

Real-Time Raman Gas Analysis for Today’s Power Generation

<h3><strong>Real-Time Process Insights for Oil, Gas, &amp; Future Fuels with Raman Spectroscopy</strong></h3><h4><strong>A 5-Part Webinar Series</strong></h4><p>As the energy sector shifts toward more complex and dynamic processes, real-time analytics are essential for maintaining control, efficiency, and product quality. This 5-part webinar series explores how process Raman spectroscopy and integrated measurement solutions enable fast, in-line analysis across oil &amp; gas, power generation, and emerging energy applications.</p><h5><strong>What we'll cover:</strong></h5><p>Each session highlights practical approaches to improving process visibility, reducing analytical delays, and supporting faster decision-making for:</p><ul><li>Natural gas</li><li>Refined fuels</li><li>Hydrogen</li><li>Sustainable aviation fuels</li><li>Carbon capture</li><li>Power generation</li><li>Emerging energy applications</li></ul><h5><strong>This Series is Ideal For:</strong></h5><p>Process, operations, and instrumentation professionals across oil &amp; gas, power generation, and emerging energy sectors, including engineers, plant and refinery managers, and technical specialists involved in process optimization and analytical measurement.</p><h5><strong>Join the Webinars To:</strong></h5><ul><li>Understand how real-time, in-line analytics improve process control and efficiency</li><li>Learn how process Raman simplifies and accelerates gas and liquid analysis</li><li>Explore alternatives to traditional methods such as gas chromatography</li><li>See how integrated measurement solutions enhance operational visibility</li><li>Gain insight into applications across conventional and next-generation energy systems</li></ul><h4><strong>Webinar 3: Simplifying Real-Time Natural Gas Monitoring with Integrated Process Raman and Flow Measurement</strong></h4><p>This webinar highlights an integrated solution for natural gas applications combining real-time and in-line process Raman-based compositional analysis with advanced flow measurement and control. The Raman technology delivers precise hydrocarbon and heating value (BTU) measurement, while the flow computer platform enables reliable measurement, monitoring, and remote operational visibility from wellhead to pipeline.</p><p>With seamless integration, these solutions connect high-quality compositional data with standardized flow measurement to optimize production and support more efficient natural gas operations. As standards continue to mature, this approach also serves as a compelling forward-looking alternative to traditional gas chromatography (GC) for custody transfer, offering reduced operational complexity.</p><blockquote><p><strong>Speaker: </strong>Ethan Borchelt (Product Manager, Thermo Fisher Scientific)</p><p><strong>Speaker:</strong> Kathy Rosalina (Field Applications Scientist, Thermo Fisher Scientific)</p></blockquote>

Simplifying Real-Time Natural Gas Monitoring with Integrated Process Raman and Flow Measurement

how integrated Raman gas analysis and flow measurement simplify natural gas monitoring and support efficient pipeline operations.

Natural Gas Monitoring with Integrated Process Raman

<h4><strong>Choosing a different carrier gas in GC: Hydrogen or Nitrogen?</strong></h4><p><strong>Rising costs and supply concerns are pushing labs to explore alternatives to helium. This webinar covers the key considerations when switching to hydrogen or nitrogen — including on-site generation, separation performance, and practical tips for a smooth transition.</strong></p><h4><strong>Why do GC liners need to be deactivated?</strong></h4><p>From injection technique to matrix complexity, liner selection directly impacts chromatographic performance. This webinar explores modern deactivation technologies, testing protocols, and best practices to maximize inertness and extend liner lifetime.</p><h5><strong>Key learnings:</strong></h5><ul><li>Evaluate when and how to switch from helium to nitrogen or hydrogen</li><li>Understand key criteria for selecting the right GC liner</li><li>Learn how advanced deactivation improves performance and liner lifetime</li></ul>

Restek Corporation: Choosing a Different Carrier Gas in GC and Why are Liners Deactivated

Choosing a Different Carrier Gas in GC and Why are Liners Deactivated

This webinar covers the key considerations when switching to hydrogen or nitrogen

Choosing a Different Carrier Gas in GC

<p><strong>With our eyes, we see the world in visible light. Although visible light makes up only a small part of the radiation spectrum, the invisible light covers most of the remaining spectral range. The radiation of invisible light carries much more additional information. Emissivity is a key factor for the accurate measurement of temperatures. It depends on various influences and must be adjusted according to the application.</strong></p><p>The webinar will provide you with insights into non-contact temperature measurement technology using infrared and its fields of application. Temperature is the key variable for determining process steps and ensuring quality characteristics. Non-contact temperature detection means very fast response times without interfering with the process itself.</p><p><i>Join the free webinar with certification of attendance now. &nbsp;&nbsp;</i></p><h4><strong>Attend the Webinar to Learn:</strong></h4><ul><li>More about the physical laws and different infrared measuring systems</li><li>Why emissivity settings are a key factor for the accurate measurement of temperatures</li><li>How to reduce errors in the IR measurement process.</li></ul><blockquote><p><strong>Speaker: </strong>Ingo Stahlkopf (Head of Sales, Optris GmbH &amp; Co. KG)</p><p>Ingo Stahlkopf, Head of Sales, Optris GmbH Ingo dived into the world of non-contact temperature measurement in 2014. Before that he started his career in 2008 as product manager of a battery manufacturer straight after his studies in economics and engineering at the University of applied science in Berlin, Germany. The main topics in this position were technical part in for large scaled backup solutions in international projects, mainly in the energy sector. At Optris he was active for 4 years as regional sales manager before, in 2018, he became in charge of the sales team and its activities as the head of sales at Optris.</p><p><strong>Speaker: </strong>Torsten Czech (Head of Marketing, Optris GmbH &amp; Co. KG)</p><p>Torsten Czech, Head of Marketing, Optris GmbH Torsten was studying electrical engineering in Berlin and is working since more than 28 years now in the infrared technology business. After some years in different sales positions he was active as Product manager for infrared thermometers and cameras before he became Head of Marketing at Optris in 2019.&nbsp;</p></blockquote>

AZOM: Infrared Measurement – Basic Principles

Infrared Measurement – Basic Principles

Join our free webinar on non-contact infrared temperature measurement. Learn about IR measuring systems, emissivity settings, and how to reduce process errors

<p><strong>Environmental testing labs aiming to reduce their carbon footprint often worry that choosing more sustainable gas chromatography solutions means compromising on sensitivity or robustness. In this SelectScience® TechTalk, learn how the Clarus® Nova GC platform demonstrates that laboratories can achieve both sustainability and high‑performance GC in a single, modern system.</strong></p><p>In just 20-minutes, experts Rahul Raut and Miles Snow from PerkinElmer will share how this advanced GC design helps laboratories reduce energy consumption, optimize carrier gas usage, and support safer adoption of hydrogen carrier gas for environmentally focused applications.</p><p>They will also highlight how SimplicityChrom CDS streamlines operation, strengthens data integrity, and reduces rework, helping laboratories increase efficiency and operate more responsibly.</p><p>Register today to learn how you can balance analytical confidence with sustainability and long‑term operational efficiency in environmental testing workflows.</p><h4><strong>Who should attend?</strong></h4><ul><li>This event is perfect for:</li><li>Professionals in gas chromatography</li><li>Lab managers</li><li>Professionals in method development</li><li>Lab directors</li><li>Lab technicians</li></ul><h4><strong>What will this webinar cover?</strong></h4><ul><li>How the<strong> Clarus® Nova GC</strong> supports sustainable laboratory practices through energy‑efficient design and smart carrier gas management.</li><li>How hydrogen‑ready safety features enable safer, lower‑impact GC workflows.</li><li>Environmental testing applications, including VOCs, SVOCs, and regulatory‑compliant methods.</li><li>How <strong>SimplicityChrom™ CDS</strong> improves efficiency, data integrity, and resource utilization in routine environmental analysis.</li></ul><h5><strong>Certificate of attendance</strong></h5><ul><li>If you attend the live webinar, you will automatically receive a certificate of attendance, including a learning outcomes summary, for continuing education purposes.&nbsp;</li><li>If you view the on-demand webinar, you can request a certificate of attendance by emailing editor@selectscience.net.</li></ul><p><strong>Webinar details</strong></p><ul><li>Cost: Free to attend</li><li>Location: Online</li><li>Duration: 20 minutes</li></ul><p><i>Registration is required to secure your place. If you register but can’t attend live, you will receive a link to the on‑demand recording once it becomes available.</i></p><blockquote><p><strong>Presenter: </strong>Rahul Raut (Technical Product Manager, Gas Chromatography &amp; Mass Spectrometry, PerkinElmer)</p><p>Rahul Raut is the Gas Chromatography and Mass Spectrometry Technical Product Manager and is also leading the software product manager role at PerkinElmer. Prior to this, he was a Sr. Application Scientist developing strategic applications in support of PerkinElmer’s GC, GC/MS and LC product portfolio. He has developed and collaborated on a wide variety of applications across pharma, food, environmental, and industrial. Before joining PerkinElmer he worked at various pharmaceutical companies, where he focused on developing and validating analytical applications for commercial drug products, and small molecules, and is well versed in analytical method development, validation, and tech transfer activities.</p><p><strong>Presenter: </strong>Miles Snow (Senior Principal Systems Engineer – R&amp;D, PerkinElmer)</p><p>Miles Snow began his career at PerkinElmer in field operations, supporting internal and external customers with their GC hardware and software applications. He later transitioned into the GC R&amp;D team, where he focused on developing applications for key markets. This work ultimately led to his current role as a Senior Principal Systems Engineer, where he continues to advance GC innovation and customer‑focused solutions.</p></blockquote>

SelectScience: How environmental testing labs can adopt sustainable GC workflows without compromising performance

How environmental testing labs can adopt sustainable GC workflows without compromising performance

Learn how Clarus Nova GC supports sustainable environmental GC analysis with hydrogen-ready safety, efficient carrier gas use, and streamlined CDS workflows.

Related content

What You Need to Know About Electron Capture Detectors

News from LabRulezGCMS Library - Week 21, 2026

Identifying the transition from antemortem to post-mortem odor in cadavers cadavers in an outdoor environment (Darshil Patel, MDCW 2026)