EU Regulation 396/2005: Pesticide Residue Testing and the Critical Role of QuEChERS Evaporation in Food Safety

<p><strong>Our Library never stops expanding. What are the most recent contributions to LabRulezGCMS Library in the week of 4th 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>presentation by <strong>MDCW / JEOL</strong> and technical note by <strong>Thermo Fisher Scientific!</strong></p><h3><strong>1. MDCW / JEOL: Flow-Modulated GCxGC-QMS Analysis Without Splitting Off the GC Flow</strong></h3><ul><li>Presentation</li><li><a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/O_16_Jensen_11e29d5022.pdf"><strong>Full PDF for download</strong></a></li></ul><section><div><div><div><div><div><div><p>This presentation by Kirk Jensen (JEOL USA) explores the feasibility of performing <strong>flow-modulated comprehensive two-dimensional gas chromatography (GC×GC) coupled with quadrupole mass spectrometry (QMS)</strong> without splitting the GC flow, which is traditionally required to protect MS systems from high carrier gas flows. The core concept builds on GC×GC, where compounds are separated using a primary and secondary column connected via a modulator, significantly increasing separation power compared to one-dimensional GC. The presentation contrasts <strong>thermal modulation</strong> (offering sharper peaks and higher theoretical sensitivity but requiring cryogenic cooling) with <strong>flow modulation</strong>, which avoids cryogens, handles volatile analytes well, and is more flexible, but typically demands higher gas flows that standard MS systems cannot tolerate .</p><p>To address this limitation, the study utilizes the <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/library?manufacturerItems=24&amp;search=JMS-Q1600GC"><strong>JEOL JMS-Q1600GC</strong></a><strong> UltraQuad quadrupole GC-MS system</strong>, which can accept unusually high carrier gas flows (up to ~20 mL/min), enabling direct coupling with a <strong>SepSolve INSIGHT flow modulator</strong> without splitting the effluent . The analytical setup includes dual GC columns (e.g., Zebron ZB-5MSplus for the first dimension and BPX50 for the second), high secondary flow rates (~25 mL/min), and electron ionization (EI) MS detection. Additional system components include optional FID detection, bleed line control, and ChromeSpace software for data processing . This configuration allows full analyte transfer into the MS, eliminating the need for flow splitting and potentially improving detection efficiency.</p><p>Experimental results demonstrate the applicability of this approach to complex mixtures, including a <strong>pesticide mixture containing over 200 compounds</strong> and real-world samples such as perfumes and fuels. The GC×GC-MS system produced detailed two-dimensional chromatograms with high spectral quality, enabling the correct identification of approximately 120 compounds despite relatively moderate spectral match factors . Comparisons at different flow rates (e.g., 25 vs. 50 mL/min) showed that spectral integrity and compound identification remain robust, indicating that higher flow operation does not significantly compromise MS performance.</p><p>In conclusion, the work demonstrates that <strong>flow-modulated GC×GC-QMS without flow splitting is feasible</strong>, provided that the MS system can tolerate high carrier gas flows. While further optimization is needed (e.g., column selection, inlet pressure, and separation conditions), the approach offers a practical alternative to thermal modulation by eliminating cryogens and simplifying operation. Future work will focus on improving sensitivity, optimizing separations, and exploring alternative carrier gases such as hydrogen to reduce costs and expand applicability</p></div></div></div></div></div></div></section><h3><strong>2. Shimadzu: Detailed Hydrocarbon Analysis by Nexis GC-2030 Using ASTM D6730</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_00863_en_eb633bc741.pdf"><strong>Full PDF for download</strong></a></li></ul><h5><strong>User Benefits</strong></h5><ul><li>Detailed compositional analysis of gasoline in accordance with ASTM D6730 is feasible using the Nexis GC-2030.&nbsp;</li><li>By employing PONAsolution, a PONA/DHA analysis software, laborious identification tasks can be reduced, and quantitation calculations and report generation can be performed automatically.</li></ul><p>ASTM D6730 specifies the analysis of hydrocarbons in gasoline and oxygenates such as ethanol, methyl tert-butyl ether (MTBE), and ethyl tert-butyl ether (ETBE) over a boiling point range up to 225 ̊C. Identification and quantification of individual compounds in gasoline are critically important for refinery process control and product quality assurance. In this application news, we report compositional analysis of gasoline conforming to ASTM D6730 using the <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/library?mainauthorItems=1&amp;search=Nexis+GC-2030"><strong>Nexis GC-2030 gas chromatograph</strong></a>. Gasoline typically comprises over 100 hydrocarbons, making identification tasks highly complex; however, PONAsolution, a PONA/DHA analysissoftware,simplifies this process.</p><h4><strong>PONAsolution</strong></h4><p>PONAsolution Ver.6 provides retention index libraries for each relevant standard (ASTM D6730, D6729, D5134, D6733). Identification of n-alkanes automatically corrects the retention times of the remaining several hundred components, thus streamlining the identification process. When only a specific retention region requires adjustment, the two-point identification function is useful (Fig. 1). In the two-point identification procedure, reference and sample chromatograms are compared while assigning corresponding peaks. First, click on an identified component mark in the reference data (Fig. 1, a), then click the matching sample peak (Fig. 1, b). Repeat this for a second pair of peaks. The retention times of components between these two anchor points are then automatically corrected.</p><h4><strong>Conclusion</strong></h4><p>Compositional analysis of gasoline in accordance with ASTM D6730 was performed. The combination of SH PONA Tuning Column and SH-1 PONA main column enabled separation of compounds with closely spaced retention times. Moreover, use of PONAsolution software greatly simplifies complex identification tasks.</p><h3><strong>3. Thermo Fisher Scientific: Fiber optic probes add flexibility to Raman chemical analysis</strong></h3><ul><li>Technical note</li><li><a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/labrulez-bucket-strapi-h3hsga3/drx3_flex_tech_note_tn54708_bebb56b870.pdf"><strong>Full PDF for download</strong></a></li></ul><p>Fourier Transform Infrared Spectroscopy (FTIR) and Raman Spectroscopy are non-destructive analytical techniques that rely on the interaction of electromagnetic radiation with molecular vibrations to provide information about the chemical composition and structure of a sample. Despite their similarities, there are some distinct differences between the two techniques. In principle, FTIR is based on the absorption of infrared radiation by molecules and measures changes in dipole moment during molecular vibrations. Raman spectroscopy, on the other hand, is based on the inelastic scattering of monochromatic light and measures changes in polarizability during molecular vibrations.&nbsp;</p><p>When applied to bulk chemical analysis, both FTIR and Raman spectroscopy can be used to analyze solids, liquids, and gases, but the nature of Raman spectroscopy lends some unique sampling advantages. Additionally, Raman often requires little to no sample preparation. Presented herein are application examples that highlight some of the sampling advantages of Raman spectroscopy. All the spectral data in this technical note were collected using a <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/products/2238"><strong>Thermo Scientific™ DXR3 Flex Raman Spectrometer</strong></a> equipped with a fiber optic probe. (Fiber optics are readily available for Raman spectroscopy because of the use of visible and NIR light and do not require the exotic materials associated with FTIR fiber optics.) Preliminary tests for all samples were carried out using both 532 nm and 785 nm excitations, and it was determined that the 785 nm laser set gave an overall better balance between fluorescence and Raman scattering efficiency.</p><h4><strong>Summary&nbsp;</strong></h4><p>In this technical note, the analyses of a variety of samples by Raman spectroscopy are demonstrated. All samples were analyzed without sample preparation.&nbsp;</p><ul><li>Precise and localized analysis at the focal point of the Raman-exciting laser allows sampling through glass bottles, blister packaging and plastic containers, which eliminates possible cross contamination and analyst exposure to hazardous materials. The contributions from the packaging and containers depend on the type of container material, the container thickness, and the materials’ chemical compositional complexity, but these contributions can be readily subtracted out when needed.&nbsp;</li><li>Water is a weak Raman scatterer. Raman therefore has reduced water sensitivity, making it a preferred technique for aqueous solution analysis over FTIR. As demonstrated in the analysis of an energy drink, the Raman bands from water can be subtracted from the spectrum of the aqueous solution, leading to the identification of the components of the solution.&nbsp;</li><li>Raman spectroscopy is well suited for the analysis of inorganic materials, especially in identifying the crystal phases and polymorphs, as demonstrated by the analyses of minerals and pigments in a painting.&nbsp;</li><li>Fiber optic probes provide flexibility and ease of maneuverability. This is particularly advantageous when analyzing samples that are difficult to access or manipulate, such as large containers, geological samples and paintings</li></ul><p>The DXR3 Flex has multiple sampling options available. A properly configured fiber-optic probe is arguably the most versatile accessory for the analysis of bulk solids and liquids. The advantages, both from those inherent to Raman spectroscopy and those resulting from the use of fiber optic probe, provide opportunities for a wide variety of different applications when using the DXR3 Flex Raman Spectrometer.</p>

News from LabRulezGCMS Library - Week 19, 2026

<p><strong>🎤Francis Femi Oloy</strong></p><p><strong>In this episode of Concentrating on Chromatography, David speaks with Francis Femi Oloy about using chromatography to uncover hidden pollutants in real-world water systems.</strong></p><p>Femi’s team analyzed polychlorinated biphenyls (PCBs) in six major rivers in southwestern Nigeria — compounds that were banned decades ago but still persist in the environment. Using a workflow that many analytical labs will recognize — liquid–liquid extraction, cleanup, rotary evaporation, nitrogen blowdown, and GC-ECD detection — they quantified 25 PCB congeners at trace levels and linked the results to ecological and human health risk.</p><h4><strong>In this conversation, we cover:</strong></h4><ul><li>Why legacy pollutants like PCBs still show up today</li><li>Choosing GC-ECD vs LC-MS for halogenated compounds</li><li>Liquid–liquid extraction and matrix cleanup strategies</li><li>Why sample concentration is critical for dilute environmental samples</li><li>How rotovap + nitrogen blowdown work together without losing volatile analytes</li><li>Seasonal trends (why wet season levels were higher)</li><li>Translating concentration data into meaningful risk assessments</li></ul><h3><strong>Video Transcription</strong></h3><section><div><div><div><div><div><div><p><strong>Persistent organic pollutants</strong> such as polychlorinated biphenyls (<strong>PCBs</strong>) remain a significant environmental concern despite decades of regulatory restrictions. In this interview, Francais Femi Oloy discusses the environmental and analytical challenges associated with monitoring PCB contamination in rivers of southwestern Nigeria, a rapidly industrializing region where urban growth, industrial activity, agriculture, and dense populations intersect with extensive aquatic systems.</p><p>Oloy explains that his interest in environmental contaminant analysis emerged from observing unexplained health problems and environmental degradation while growing up in Nigeria. This motivated his transition into organic and environmental chemistry, with a focus on identifying pollutants present in drinking water, agricultural soils, and food systems. Southwestern Nigeria, particularly the Lagos region, represents a critical environmental monitoring area due to intense industrial development, shipping activity, and widespread human dependence on rivers for domestic use, agriculture, and fishing.</p><p>Although PCBs are considered “<strong>legacy pollutants</strong>” and are no longer intentionally produced, the interview highlights why they continue to persist in aquatic environments. Old electrical transformers and aging industrial equipment still contain PCB residues, while historical contamination stored in river sediments can become remobilized during flooding, dredging, or sediment disturbance. Because PCBs are hydrophobic and resistant to degradation, they preferentially accumulate in sediments and bioaccumulate through aquatic food chains, creating long-term environmental and human exposure risks.</p><p>A major focus of the discussion centers on the analytical workflow used for PCB determination in environmental water samples. Composite river water samples were collected in amber glass bottles to avoid contamination and photodegradation, preserved with sodium azide to minimize microbial activity, and stored under cooled conditions prior to extraction. The analytical protocol employed <strong>liquid–liquid extraction</strong> using dichloromethane (DCM) and hexane to recover both polar and nonpolar PCB congeners. Oloy emphasizes that liquid–liquid extraction was selected over solid-phase extraction (SPE) because of concerns about congener retention within sorbent materials and clogging issues associated with large-volume environmental samples.</p><p>Following extraction, concentration and cleanup represented critical analytical stages due to the trace-level occurrence and volatility of PCBs. Silica and alumina cleanup procedures were used to remove matrix interferences prior to instrumental analysis. The concentration workflow combined rotary evaporation for bulk solvent reduction with nitrogen blowdown for final volume reduction to less than 1 mL, while carefully avoiding excessive temperature or complete dryness to minimize analyte loss. Oloy repeatedly stresses that improper concentration procedures are among the most common causes of analytical failure in PCB analysis.</p><p>For instrumental determination, the study utilized <strong>gas chromatography coupled with electron capture detection (GC-ECD)</strong> rather than LC-MS or GC-MS. According to Oloy, GC was preferred because PCBs are sufficiently volatile for gas chromatographic separation, while ECD provided superior sensitivity and selectivity for chlorinated compounds at environmentally relevant concentrations. The interview also discusses analytical validation strategies, including the use of surrogate standards to assess <strong>recoveries,</strong> which ranged from approximately <strong>85% to 114%</strong>, and signal-to-noise-based determination of detection limits.</p><p>The study further examined <strong>seasonal variations in PCB concentrations</strong>, revealing <strong>higher levels during the wet season</strong>. This observation was attributed to rainfall-driven runoff from contaminated infrastructure, sediment resuspension, and lower temperatures that reduce volatilization losses. To communicate toxicological relevance beyond simple concentration reporting, the researchers also calculated <strong>toxic equivalency values (TEQs)</strong>, converting mixtures of PCB congeners into biologically meaningful toxicity estimates comparable to dioxin toxicity metrics.</p><p>Beyond environmental monitoring, Oloy highlights broader research interests focused on <strong>pollutant remediation and sustainable environmental protection</strong>. His group is also involved in developing catalytic materials capable of degrading or removing persistent contaminants from environmental systems. Throughout the discussion, he emphasizes that analytical chemistry plays a central role not only in detecting pollutants, but also in enabling prevention, remediation, and long-term environmental management strategies.</p></div></div></div></div></div></div></section><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><blockquote><h4><strong>Concentrating on Chromatography Podcast</strong></h4><p>Dive into the frontiers of chromatography, mass spectrometry, and sample preparation with host David Oliva. Each episode features candid conversations with leading researchers, industry innovators, and passionate scientists who are shaping the future of analytical chemistry. From decoding PFAS detection challenges to exploring the latest in AI-assisted liquid chromatography, this show uncovers practical workflows, sustainability breakthroughs, and the real-world impact of separation science. Whether you’re a chromatographer, lab professional, or researcher you'll discover inspiring content!</p><p>You can find <strong>Concentrating on Chromatography Podcast </strong>in podcast apps:</p><ul><li><a target="_blank" rel="noopener noreferrer" href="https://open.spotify.com/show/1wZg67rCjoGju4yhqxI3tL"><strong>Spotify</strong></a></li><li><a target="_blank" rel="noopener noreferrer" href="https://podcasts.apple.com/tz/podcast/concentrating-on-chromatography/id1788429185"><strong>Apple podcast</strong></a></li><li><a target="_blank" rel="noopener noreferrer" href="https://podscan.fm/podcasts/concentrating-on-chromatography"><strong>podscan</strong></a></li></ul><p>and on <a target="_blank" rel="noopener noreferrer" href="https://www.youtube.com/@ChromatographyTalk/videos"><strong>YouTube channel</strong></a></p></blockquote>

Tracking Toxic PCBs in River Water using Gas Chromatography–Electron Capture Detection

Article

Product

Application

Video

Scientists

Environment

Food

Presentation

Interview

Science and research

Laboratories

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.

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Organomation, founded in 1959, designs and manufactures high-quality nitrogen evaporators and extraction systems. Known for innovation and durability, their lab instruments are used globally for efficient sample preparation with strong customer support.

Organomation

Agilent Technologies

Phenomenex

Thermo Fisher Scientific

<p>Solid Phase Extraction (SPE) is a highly selective sample preparation technique that can be used to separate the analytes of interest from your matrix so they can be more readily analysed, and don’t cause problems with HPLC and GC column lifetime due to dirty samples. This webinar explains the terminology commonly used in SPE, common formats and extraction modes and then uses this information to explain how to develop and optimise SPE methods in your lab.</p>
<h3><strong>Key Learning Objectives:</strong></h3>
<ul>
<li>Understand the terminology used in SPE method development</li>
<li>Learn the different product formats and stationary phases available, and where they should be used in SPE methods</li>
<li>How to develop and optimise an SPE method</li>
</ul>


Phenomenex: The Basics of Solid Phase Extraction

The Basics of Solid Phase Extraction

This webinar explains the terminology commonly used in SPE, common formats and extraction modes

<p><strong>The trend for multi-residue pesticide analysis is towards faster, simpler, more generic methods of extraction with minimal, if any, clean-up to facilitate higher sample throughput. But this approach can result in extracts with high levels of matrix co-extractives, which will inevitably lead to faster contamination of LC–MS/MS and especially GC–MS/MS systems.</strong></p>
<p>The reluctance to use a cartridge SPE clean-up step most likely results from the time required for manual procedures and time taken to achieve the optimum balance between removal of co-extractive without loss of analytes.</p>
<p>This webinar will highlight an automated optimized online miniaturized cartridge clean-up approach providing more effective clean-up of QuEChERS extracts to overcome the analytical challenges faced by laboratories undertaking pesticides residues analysis.</p>
<h3><strong>Key Learning Objectives:</strong></h3>
<ul>
<li>Understand the configuration, operation, flexibility and ease of use of an automated on-line µSPE setup with GC–MS and LC–MS analysis</li>
<li>Learn how optimized sorbent blends can yield excellent results from GC–MS/MS and LC–MS/MS multi-residue pesticides analysis in different sample types</li>
<li>Discover how µSPE can increase robustness, reduce system maintenance and increase laboratory productivity</li>
</ul>
<h3><strong>Who Should Attend:</strong></h3>
<ul>
<li>Scientists/chemists/analysts involved in pesticide residue analysis</li>
<li>Laboratory manager in food industry and contract testing laboratories</li>
<li>Researchers and method developers interested in automating sample clean-up for residues and contaminants</li>
</ul>
<blockquote>
<p><strong>Presenter:  Dr. Daniela Cavagnino (Product Marketing Manager for Gas Chromatographs and GC Autosamplers in the Applied Analytical Technologies Group, Thermo Fisher Scientific)</strong></p>
</blockquote>
<blockquote>
<p>Dr. Daniela Cavagnino received a Master’s Degree in Chemistry at the University of Milan, Italy. She started her career in gas chromatography at Thermo Fisher Scientific spending several years in the R&amp;D laboratories working on GC technology innovation. Then, she conveyed her technical background into product management and marketing management roles with more than 15 years’ experience in promoting GC/GCMS technology and applications in several different market segments.</p>
</blockquote>
<blockquote>
<p>During her career, she has participated as author and co-author in technical publications and actively operated as lecturer at international conferences.</p>
</blockquote>
<blockquote>
<p><strong>Presenter: Dr. Cristina Jacob (Product Manager of LC TriPlus Autosamplers, Thermo Fisher Scientific)</strong></p>
</blockquote>
<blockquote>
<p>Dr. Cristina Jacob is Product Manager of LC TriPlus Autosamplers at Thermo Fisher Scientific. She received her bachelor’s in chemistry from the University of Évora, Portugal, followed by a Ph.D. in organometallic chemistry from the University of Lisbon, Portugal. Following a postdoctoral appointment at the National Center for Toxicological Research (NCTR) at the US Food &amp; Drug Administration, conducting research in toxicological studies, and at LABERCA, in France, conducting food safety metabolomics studies, she became a Research Scientist at Bioaster’s Metabolomics and Proteomics Technology Unit, in France. Dr. Jacob then moved to the United States as a visiting scientist at US FDA NCTR where she worked on the development of mass-spectral based analytical methodologies to elucidate mechanisms of toxicity before joining the TSQ Product Management team at Thermo Fisher Scientific in 2018.</p>
</blockquote>
<blockquote>
<p><strong>Presenter: Richard Fussell (Global Marketing Manager, Food and Beverage, Thermo Fisher Scientific)</strong></p>
</blockquote>
<blockquote>
<p>Before joining Thermo Fisher Scientific in 2014, Richard gained extensive analytical experience working for the UK government. This includes 21 years at the Food and Environment Research Agency, York, UK, where he was an Advanced Research Fellow and Senior Scientist focused on the evaluation and implementation of emerging chromatography and mass spectrometry techniques for the analysis of pesticides, veterinary medicines and contaminants in food and the environment. He has served on various national and international committees and has published more than 50 articles in the peer reviewed literature.</p>
</blockquote>


Pixabay/Jan Amiss: "Ask The Expert" Webinar: Automated online µSPE clean-up to improve efficiency, robustness and productivity in LC- and GC-MS/MS analysis of pesticide residues

"Ask The Expert" Webinar: Automated online µSPE clean-up to improve efficiency, robustness and productivity in LC- and GC-MS/MS analysis of pesticide residues

<p><strong>Learn how to select and implement sample preparation like SPE and QuEChERS to meet the requirements of today’s environmental analysis. While considering sample prep, we will also go into detail about careful consideration needed in selection and use of all consumables in the chromatography workflow. We will present new innovations for varying applications including automation as well as optimizing your GC analysis.</strong></p>
<blockquote>
<p><strong>Presenter: Jessica Netzer (Applications Scientist, Chromatography Columns and Consumables, Thermo Fisher Scientific)</strong></p>
</blockquote>
<blockquote>
<p>Jessica loves sample preparation. She is an experienced applications scientist at Thermo Fisher Scientific where she supports customers with solutions for LC, GC, and sample prep. Jessica is an analytical chemist with over 15 years of experience in chromatography techniques, method development, and method validation in pharmaceutical and environmental laboratories.</p>
</blockquote>
<blockquote>
<p><strong>Presenter: Daniela Cavagnino (Product Marketing Manager, Thermo Fisher Scientific)</strong></p>
</blockquote>
<blockquote>
<p>Daniela received her Master’s degree in Chemistry at the University of Milan, Italy. She started her career in gas chromatography at Thermo Fisher Scientific, spending several years in R&amp;D working on GC technology innovation. She then conveyed her technical background into product management and marketing management roles with more than 15 years of experience promoting GC and GC-MS technology and applications in several different market segments.</p>
</blockquote>


Thermo Scientific - Environmental Webinar Week

Sample Prep Techniques To Improve Your Environmental Analysis

<p><strong>Quantification of trace levels of pesticides in food can be challenging. Identifying residual pesticides in complex matrices requires adequate sample workup and appropriate instrumentation.</strong></p>
<p>Agilent offers a comprehensive workflow for pesticide screening and quantitation by combining QuEChERs sample preparation and multi-platform GC/MS analysis. This presentation will cover the workflows utilizing GC/MSD for pesticide screening and quantitation, targeted pesticide screening with enhanced sensitivity and selectivity with GC/TQ, and comprehensive trace-level screening and quantitation with retrospective analysis capabilities with high-resolution accurate mass analysis using GC/Q-TOF.</p>
<p><strong>Key Learning Objectives/What attendees will learn:</strong></p>
<ul>
<li>Suspect screening and quantitation by GC/MSD</li>
<li>Targeted selective and sensitive quantitation by GC/TQ</li>
<li>Trace level screening and quantitation by GC/Q-TOF</li>
</ul>
<p><strong>Who Should Attend:</strong></p>
<p>Food scientists and chemists interested in pesticide analysis by GCMS</p>
<blockquote>
<p><strong>Presenter:</strong> Erinn O&#39;Neill (GCMS Applications Scientist, Agilent)</p>
</blockquote>
<blockquote>
<p>Erinn O’Neill is a GCMS Pre-Sales Application Scientist for Agilent in Wilmington, Delaware. She graduated from the University of North Carolina at Chapel Hill with a Ph.D. in Chemistry in 2019, where she focused on identifying novel chemical structures synthesized by plant-pathogenic bacteria. Before that, she obtained a Bachelor’s degree in Chemistry from Drew University in New Jersey, where she studied reactions between atmospheric aerosol surrogates and trace pollutants.</p>
</blockquote>


Agilent: A multi-platform approach for screening and quantitating pesticide residues in food

A multi-platform approach for screening and quantitating pesticide residues in food

This presentation will cover the workflows utilizing QuEChERs sample preparation and GC/MSD for pesticide screening and quantitation.

Screening and quantitating pesticide residues in food

<p><strong>Key Learning Points:</strong></p>
<ul>
<li>Learn how to approach analyzing for PFAS, it is not rocket science like they made it out to be</li>
<li>Become aware of Sporadic PFAS Contamination</li>
<li>Understand how to identify false positives</li>
<li>Require all analysis quality control and samples to be analyzed in replicates to identify false positives</li>
</ul>
<p><strong>Who Should Attend:</strong></p>
<ul>
<li>Anyone who is new or has used Quechers and needs to have an update and an insight on Quechers method</li>
</ul>
<blockquote>
<p><strong>Presenter:</strong> Duilio Romanello (Senior Technical Specialist, Phenomenex)</p>
</blockquote>
<blockquote>
<p>Duilio Romanello graduated with his Bachelors of Science in Pharmaceutical Chemistry and Technology from University of Bologna. Duilio then joined Phenomenex in 2008 as an Inside Technical Sales Consultant becoming Team Leader in Italy for GC/SPE in 2010 and then for the Environmental &amp; Food Team. Since 2016 he has been covering the role of  Account Manager for the South of Italy working remotely and acting as GC Specialist. Since November 2023 he is Senior Technical Specialist for the Technical team at Phenomenex.</p>
</blockquote>


Phenomenex: Quechers 101: Background and Updates

Quechers 101: Background and Updates

Learn how to approach analyzing for PFAS, it is not rocket science like they made it out to be

<p><strong>Key Learning Points:</strong></p>
<ul>
<li>Understand the benefit of using SPE than other sample preparation techniques </li>
<li>Learn the basic protocol for SPE method and separation modes</li>
<li>Dig into reverse phase SPE typical protocol, and solid phase extraction media</li>
</ul>
<p><strong>Who Should Attend:</strong></p>
<p>Anyone beginning with solid phase extraction (SPE) technique, or anyone struggling with method sensitivity</p>
<blockquote>
<p><strong>Presenter:</strong> Grace Guo (Senior Technical Specialist, Phenomenex)</p>
</blockquote>
<blockquote>
<p>Grace Guo graduated from the Johns Hopkins University with a Master’s degree in Material Science and Engineering. She joined Phenomenex Technical Team in 2017 providing technical support globally. With more than 8 years of experience on SPE, HPLC and GC, she delivered 50+ seminars and webinars globally covering food and environmental, clinical, pharma and biopharma industry. </p>
</blockquote>


GCMS webinars focusing on SPE - page 2

Solid Phase Extraction Introduction and Theory