A nitrogen-enriched graphene nanomaterial (GN3) for energy storage in supercapacitors, developed by researchers at the Czech Advanced Technology and Research Institute (CATRIN) of Palacký University Olomouc, has been included in the European Commission’s <a target="_blank" rel="noopener noreferrer" href="https://innovation-radar.ec.europa.eu/innovation/66621">Innovation Radar database as a technology with strong commercial potential</a>. The material has been assessed as highly market-ready, with significant potential to create new markets. Palacký University, which coordinated the prestigious European Innovation Council project TRANS2DCHEM, has also been recognised among the project’s key innovators.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/CATRIN_Grafenovy_material_z_Olomouce_se_dostal_mezi_perspektivni_evropske_inovace_0d2a178219.jpg" alt="CATRIN: Graphene nanomaterial developed in Olomouc recognised among Europe’s most promising innovations" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_CATRIN_Grafenovy_material_z_Olomouce_se_dostal_mezi_perspektivni_evropske_inovace_0d2a178219.jpg 156w," sizes="100vw" width="480" height="480">Innovation Radar is a European platform that identifies promising innovations and key innovators emerging from research and innovation projects funded by the European Union.“This is a great honour and recognition of our work. The excellent assessment within the Innovation Radar platform demonstrates the potential of CATRIN—and of Palacký University as a whole—to transform scientific discoveries into products with strong commercial potential. Recognition by independent experts highlights the technology’s high level of market readiness, which is exceptional even in the context of other outstanding projects supported by the European Innovation Council,” said Jiří Navrátil, Technology Transfer Coordinator at CATRIN.The nitrogen-enriched graphene electrode material, based on graphene—a two-dimensional material consisting of a single layer of carbon atoms—was developed by researchers in Olomouc seven years ago. It originated from Michal Otyepka’s prestigious European Research Council project focused on the 2D chemistry of fluorographene.In the following years, researchers demonstrated the material’s significant potential for electrical energy storage, particularly in supercapacitors, which represent a promising alternative to today’s widely used lithium-ion batteries. Development of prototype supercapacitors with unique properties began under the prestigious European Innovation Council project TRANS2DCHEM, in collaboration with partners from Bar-Ilan University in Israel and the Italian company ITELCOND. The next logical step was the establishment of the spin-off company Atomiver, which has been operating since 2024.“The continuous growth in global energy consumption and the rapid expansion of electronic devices are driving strong demand for high-performance, stable energy storage components. Our electrode material is unique because it pushes the current limits of commercially available technologies, particularly in terms of volumetric energy density—the amount of electrical energy that can be stored within a given volume. Compared with existing technologies, our material enables several-fold higher energy density. Its inclusion in the Innovation Radar database encourages us to continue developing the technology and bring it closer to commercial production,” said Michal Otyepka, one of the inventors of the technology and co-owner of the spin-out company.The material is protected by several international patents, which have been licensed by Atomiver from Palacký University.“Supercapacitors incorporating our graphene material could one day help ensure the safe operation of large data centres, Internet of Things (IoT) networks, transport systems, grid-scale energy storage, electronics for space applications and implantable medical devices,” added Veronika Šedajová, one of the inventors of the technology.The significance of the technology was previously recognised when Atomiver was selected for the NATO DIANA accelerator programme, one of only 74 companies chosen from more than 2,600 applicants. The company has also received support from CzechInvest through its Technology Incubation programme.“We are currently in intensive discussions with investors, who have shown strong interest in the technology, not least because the electrode material we have developed also has considerable potential for applications in other industries,” said Andrew Hladký, Director of Atomiver.<a target="_blank" rel="noopener noreferrer" href="https://innovation-radar.ec.europa.eu/innovation/66621">Innovation Radar</a> serves as a platform for investors, entrepreneurs and the wider public to discover emerging technologies.

Graphene nanomaterial developed in Olomouc recognised among Europe’s most promising innovations

Comprehensive two-dimensional gas chromatography (GC×GC) has emerged as a transformative technique in analytical chemistry. While one-dimensional <a target="_blank" rel="noopener noreferrer" href="https://www.phenomenex.com/gas-chromatography">gas chromatography</a> (1D-GC) provides effective separation for simpler mixtures, it often struggles with highly complex samples where hundreds to thousands of compounds may be present. In environmental, petrochemical, biological, and food-related analyses, hundreds to thousands of compounds may be present, many of which co-elute in one-dimensional systems. This limits the ability of 1D-GC to fully resolve such mixtures.To address these limitations, GC×GC introduces an additional dimension of separation. It combines complementary (ideally orthogonal) separation mechanisms with advanced modulation processes, thereby expanding the chromatographic separation space. This enables the resolution of compounds that would otherwise remain co-eluted or undetectable. As a result, GC×GC offers enhanced peak capacity, improved selectivity, and improved detectability through the signal-focusing effects of modulation. Readers new to the subject may benefit from first reviewing the <a target="_blank" rel="noopener noreferrer" href="https://www.phenomenex.com/resources/knowledge-center/gc-knowledge-center/basic-principles-of-gas-chromatography-separation-and-analysis">principles of gas chromatography</a>, which provide the foundation for understanding multidimensional methods such as GC×GC.The technique has gained increasing importance over the past two decades in fields such as environmental monitoring, petroleum refining, <a target="_blank" rel="noopener noreferrer" href="https://www.phenomenex.com/resources/knowledge-center/gc-knowledge-center/role-gas-chromatography-forensics">forensic toxicology</a>, metabolomics, and food science. Its ability to detect trace compounds and group-related analytes makes it invaluable for both research and industry.This article explores what GC×GC is, how it works, its advantages and applications, the challenges faced, and future innovations. Whether you are an analytical scientist, a laboratory professional, or someone seeking to understand advanced separation science, GC×GC demonstrates why 2D gas chromatography (2D-GC) is considered a true game-changer.<h3>What is Comprehensive Two-Dimensional Gas Chromatography (GC×GC)?</h3>Two-Dimensional gas chromatography is an advanced analytical technique that separates complex mixtures using two columns with different stationary phases. Unlike 1D-GC, which relies on a single separation mechanism, GC×GC applies two complementary, often orthogonal, mechanisms in sequence, drastically improving resolution.In 1D-GC, compounds that share similar chemical properties often co-elute, making it difficult to identify or quantify them accurately. GC×GC resolves this by employing a primary column, typically non-polar, followed by a secondary column, usually polar or semi-polar. A modulator periodically collects and re-injects fractions from the first column into the second, ensuring comprehensive analysis. By integrating two separation dimensions, 2D gas chromatography boosts peak capacity, enabling clearer resolution and identification of hundreds to thousands of compounds, depending on the sample matrix.The primary goal of GC×GC is to maximize separation efficiency while maintaining sensitivity. Its advantages include increased peak capacity, reduced overlap, and structured chromatograms, where similar compounds group together. This structured output simplifies interpretation and enhances the reliability of results.GC×GC is not just an incremental improvement over 1D-GC but a significant leap in analyte separation. GC×GC is a cornerstone technique in modern analytical laboratories for the resolution of highly complex samples such as crude oil fractions or biological fluids. By expanding both separation space and sensitivity, GC×GC provides clearer insights into mixtures once thought unresolvable. Proper setup and <a target="_blank" rel="noopener noreferrer" href="https://gcms.labrulez.com/article/5541">gas chromatography column installation</a> are critical to ensuring reproducibility and maximizing the benefits of two-dimensional separations.<h3>Principle and Working Mechanism of GC×GC</h3>The principle of GC×GC chromatography lies in orthogonality, which employs two different separation mechanisms to enhance resolution. In the first dimension, compounds are typically separated by volatility in the first dimension (non-polar column), followed by polarity or another property in the second dimension (polar or semi-polar column). In the second dimension, a column with a contrasting phase provides additional separation based on different chemical properties.At the heart of the process is the modulator. Thermal modulators are most common and work by trapping effluent from the first column in a cryogenic or heated zone, then releasing it in sharp, timed pulses into the second column. This ensures narrow injection bands, which improve peak capacity and resolution.The combined effect is a marked increase in separation space. Instead of a simple one-dimensional chromatogram, GC×GC produces a two-dimensional plane where peaks are distributed across retention times from both columns. Data visualization typically uses contour plots or color-coded maps, which allow easy identification of compound groups.GC×GC analysis also enhances detectability due to peak compression, making trace analytes more prominent. The result is a powerful technique that captures both the breadth and depth of chemical diversity within a sample. This dual-dimension approach underpins GC×GC’s reputation as a breakthrough in chromatographic science.<h3>Key Advantages of GC×GC</h3>Comprehensive two-dimensional gas chromatography provides several important advantages that make it an essential technique for analyzing complex mixtures across diverse research areas.<ol><li>Improved peak capacity and resolution: By combining two orthogonal separations, GC×GC significantly increases the number of compounds that can be resolved compared to 1D-GC. This enhanced separation is especially useful in petrochemicals and environmental samples, where pollutants often overlap in simpler chromatograms.</li><li>Enhanced separation of complex mixtures: 2D gas chromatography easily separates hundreds or thousands of analytes from a complex mixture. Its structured separation allows co-eluting compounds to be clearly distinguished that would otherwise remain unresolved in 1D-GC.</li><li>Improved detectability of trace compounds due to modulation-induced peak focusing: The modulation process compresses analyte peaks, leading to sharper signals and improved signal-to-noise ratios. This makes it possible to detect trace-level compounds, which is critical in applications such as environmental pollution monitoring or biomarker discovery in biological samples.</li><li>Structured chromatograms for compound grouping: GC×GC produces organized chromatograms where chemically similar compounds cluster into recognizable patterns. For example, hydrocarbons align in diagonal bands, simplifying pattern recognition and aiding identification.</li></ol>Together, these advantages help transform GC×GC chromatographic analysis from a linear process into a comprehensive two-dimensional mapping of chemical diversity, providing insights that were previously inaccessible.<h3>Common Applications of GC×GC</h3>Comprehensive two-dimensional gas chromatography has become an essential tool across many industries for the analysis of highly complex compounds. Its wide range of applications demonstrates its capabilities beyond those of 1D-GC methods.<h4>Environmental analysis</h4>GC×GC is widely used to monitor pollutants such as polycyclic aromatic hydrocarbons (PAHs), pesticides, and volatile organic compounds (VOCs) in air, soil, and water. Its enhanced separation capacity allows for reliable detection of trace contaminants even in highly complex environmental matrices.<h4>Petrochemical and fuel analysis</h4>In petroleum refining and petrochemical industries, GC×GC plays a key role in characterizing crude oil fractions, fuels, and lubricants. It provides detailed hydrocarbon fingerprints, helping optimize refining processes and assess product quality.<h4>Food and flavor profiling</h4>Food chemistry benefits from GC×GC in profiling flavors, aromas, and contaminants. For instance, it can distinguish subtle differences in coffee volatiles or detect adulterants in essential oils.<h4>Forensic and toxicology screening</h4>In forensic science, GC×GC helps identify drugs, explosives, and poisons from complex biological and environmental samples. Its high sensitivity is particularly valuable for toxicology screenings where minute concentrations must be quantified.<h4>Metabolomics and biological samples</h4>GC×GC enables comprehensive profiling of metabolites in biological fluids and tissues. Its ability to reveal biomarker patterns supports research in personalized medicine, disease diagnostics, and systems biology.<h3>Challenges and Limitations of GC×GC</h3>Despite its remarkable capabilities, comprehensive two-dimensional gas chromatography presents several challenges that can limit its widespread use.<ul><li>One major barrier is instrumentation cost. GC×GC systems are considerably more expensive than conventional one-dimensional GC setups, as they require advanced modulators, specialized detectors, and robust temperature control. This makes adoption difficult for smaller laboratories with limited budgets.</li><li>Another issue is technical complexity. The method demands precise control of operating parameters such as flow rates, temperature programming, and modulation timing. Small variations can affect reproducibility, meaning that highly trained personnel are essential for reliable operation.</li><li>Data analysis represents a further challenge. The large two-dimensional datasets generated by GC×GC require sophisticated software tools for visualization and interpretation. Without advanced contour plotting and peak-processing capabilities, researchers may struggle to extract meaningful insights.</li><li>While GC×GC improves separation, unambiguous structural isomer identification often requires hyphenation with mass spectrometry (GC×GC–MS). While GC×GC effectively separates complex mixtures, distinguishing structural isomers often requires coupling with detectors such as mass spectrometry (GC×GC–MS). In addition, sample preparation can be labor-intensive, particularly with biological or environmental samples that need cleanup to prevent interferences.</li></ul>Although these hurdles exist, improvements in software, automation, and instrument design are steadily reducing these limitations, paving the way for broader adoption of GC×GC across industries.<h3>Future Trends and Innovations in GC×GC</h3>The field of comprehensive two-dimensional gas chromatography is advancing rapidly, with several innovations shaping its future role in analytical science. These developments aim to make the technique more powerful, user-friendly, and accessible to a broader range of laboratories.One promising direction is the rise of miniaturized and portable GC×GC systems, which bring advanced separation capabilities to field settings such as environmental monitoring or on-site forensic testing. At the same time, integration with high-resolution mass spectrometry (HRMS) is enabling more precise compound identification, particularly for complex isomeric mixtures.Another key trend is automation in data analysis. The use of artificial intelligence and machine learning is simplifying the interpretation of large, multidimensional datasets, reducing the need for extensive manual processing. Enhanced modulators are also being developed, improving sensitivity, minimizing sample loss, and ensuring robust performance across varied applications.In addition, there is a growing emphasis on green analytical chemistry. Efforts to lower energy consumption, reduce solvent use, and create more sustainable workflows are aligning GC×GC with environmentally responsible laboratory practices.Finally, broader clinical applications are emerging for 2D-GC, from breathomics to biomarker discovery in precision medicine. Collectively, these innovations indicate that GC×GC is evolving from a niche technique into a widely adopted analytical platform with significant scientific and industrial impact.

Comprehensive Two-Dimensional Gas Chromatography

News from LabRulezGCMS Library - Week 33, 2026

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The Czech Advanced Technology and Research Institute (CATRIN) at Palacký University is a cutting-edge scientific hub dedicated to advancing research in the fields of nanotechnology, biotechnology, and biomedicine. At its core, CATRIN boasts outstanding scientific teams, featuring international researchers. We emphasize interdisciplinarity, foster global collaborations, and work to translate our research findings into practical applications.

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Thermo Scientific SureSTART Vials and Well Plates Collection

Start your analysis with confidence using SureSTART vials, caps, well plates, and kits—offering full compatibility, quality materials, and performance across three levels.

<h4>Streamlined choice. Trusted quality.</h4>Start your analysis with confidence using Thermo Scientific™ SureSTART™ vials, caps, inserts, well plates, mats, and certified kits designed to meet your analytical, regulatory, and performance requirements. With full instrument compatibility, high material quality, and consistent performance across three defined levels, the SureSTART collection offers a smarter way to choose the right sample containment solution for your workflow.<h3>Why choose SureSTART?</h3><ul><li>Proven reliability: Every product is manufactured and certified to meet physical specifications—no weak links in your workflow.</li><li>Clear selection: Three performance levels help you balance sensitivity, robustness, and cost, now visually marked with one, two, or three waves on the vial.</li><li>Universal compatibility: Designed for seamless integration with all major GC, HPLC/UHPLC, and MS autosamplers across all vendors.</li><li>Certified cleanliness: Products are manufactured using the purest glass and plastics with low extractables and leachables, including GOLD-grade and silanized glass.</li><li>Maximum sample integrity: Minimize analyte loss and background peaks with precision-engineered sealing, surface chemistry, and material composition.</li><li>Bulk savings &amp; simplified inventory: Available in multiple pack sizes, performance levels, and formats to support your lab’s needs and budget.</li></ul><h3>The Three Performance Levels</h3><ul><li>Level 1 – Everyday analysis: For general-purpose GC/HPLC detection (e.g. UV/Vis, FID, RI). These chromatography-approved products are ideal for routine analyses with cost-efficiency in mind.</li><li>Level 2 – High-throughput analysis: Designed for regulated labs requiring robust and reproducible data, especially when using MS detectors for routine quantification.</li><li>Level 3 – High performance: For the most sensitive and selective analyses near the method detection limit. Packed in cleanroom environments and made with ultra-pure materials for maximum sample security and MS compatibility.</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_Sure_START_Vials_and_Well_Plates_Collection_5a8b0da936.jpg" alt="Thermo Scientific SureSTART Vials and Well Plates Collection: Three performance levels help you balance sensitivity, robustness, and cost, now visually marked with one, two, or three waves on the vial." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_Sure_START_Vials_and_Well_Plates_Collection_5a8b0da936.jpg 245w," sizes="100vw" width="1182" height="270"><h3>SureSTART Certified Vial and Cap Kits</h3><ul><li>Specification Certified: Routine analyses – Certified for physical specifications; no individual certificate.</li><li>LC/GC Certified: Chromatography-grade – Tested for 15 physical parameters with LC-UV &amp; GC-FID; certificate included.</li><li>MSCERT: For LC-MS/GC-MS – Certified low-adsorption kits tested with MS; includes SureStop™ vials with AVCS™ caps.</li><li>MSCERT+: For trace-level MS or DIA – Pre-cleaned, tested with LC-MS/GC-MS, and sold only as kits to ensure purity.</li><li>Application Certified: Pre-matched kits for specific instruments or validated applications.</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_Sure_START_Vials_and_Well_Plates_Collection_2_fef6049d71.jpg" alt="Thermo Scientific SureSTART Vials and Well Plates Collection: There are several factors to consider when choosing a vial or well plate for your application. The table below will help guide you through this process to determine what type of product/performance level is most suitable for your application requirements." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_Sure_START_Vials_and_Well_Plates_Collection_2_fef6049d71.jpg 204w," sizes="100vw" width="1515" height="1159"><h3>SureSTART Well Plates and Mats</h3>Thermo Scientific™ WebSeal™ well plates are ideal for laboratories seeking to increase autosampler capacity, reduce solvent usage, and streamline high-throughput workflows. Available in 96- and 384-well formats, they offer a certified alternative to traditional vials and are fully compatible with automated SPE/SLE platforms.<ul><li>Space-saving efficiency: Replace vials with well plates to increase sample capacity up to 8× and reduce storage footprint.</li><li>Flexible performance levels:<ul><li>Level 1: Standard plates for routine, non-regulated use (GC-tested).</li><li>Level 2: Low-bleed plates and high-performance mats, validated for LC-MS/GC-MS.</li><li>Level 3: Premium WebSeal Plate+ with glass-coated plastic wells—ideal for trace analytes and protein adsorption control.</li></ul></li><li>Solvent stability and clean sample contact: WebSeal Plate+ uses nanolayered silicon dioxide for minimal extractables and ultra-low adsorption.</li><li>Compatible sealing options:<ul><li>Silicone mats: For long-term storage and consistent results.</li><li>Pre-slit mats: For autosampler injection without evaporation or contamination.</li><li>Adhesive seals: For single-use workflows and re-sealing options with cavity protection.</li></ul></li></ul>Whether you work with polar solvents, proteins, or trace-level analyses, SureSTART well plates and sealing accessories help you optimize throughput, precision, and data confidence across all chromatography workflows.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_Sure_START_Vials_and_Well_Plates_Collection_3_abce3dd960.jpg" alt="Thermo Scientific SureSTART Vials and Well Plates Collection: Selecting the perfect Thermo Scientific WebSeal well plates and mats for your chromatography requirements is easy using our selector tools and resources." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_Sure_START_Vials_and_Well_Plates_Collection_3_abce3dd960.jpg 245w," sizes="100vw" width="1516" height="902">

Thermo Scientific QuEChERS Sample Preparation Kits

QuEChERS is a versatile sample preparation method for analyzing pesticides, veterinary drugs, and other residues in various sample types before GC-MS or LC-MS analysis.

<div><div><div><h3>QuEChERS sample preparation—now easier, more convenient, and affordable</h3>QuEChERS (Quick, Easy, Cheap, Effective, Rugged, and Safe)is a sample preparation method that was initially developed in 2003 for analyzing veterinary drugs in food. The method was also tested for pesticide residue analysis in plant material with great success. In 2003, the detailed method was published in the journal AOAC International. Since then, the QuEChERS method has evolved into a sample preparation technique used on a variety of analytes in an expanding number of sample types before analysis by <a target="_blank" rel="noopener noreferrer" href="https://www.thermofisher.com/cz/en/home/industrial/mass-spectrometry/gas-chromatography-mass-spectrometry-gc-ms.html">GC-MS</a> or <a target="_blank" rel="noopener noreferrer" href="https://www.thermofisher.com/cz/en/home/industrial/mass-spectrometry/liquid-chromatography-mass-spectrometry-lc-ms.html">LC-MS</a>.Thermo Scientific QuEChERS kits contain pre-packaged, ready-weighed salts, sorbents, and buffers to streamline your workflow and minimize the potential for error. The kits are grouped according to your analytes of interest, sample matrix, and preferred QuEChERS method:<ul><li>Original 2003 Method</li><li>AOAC 2007.01 Method</li><li>EN 15662 Method</li><li>NY/T 1380-2007 Method</li></ul>Complete packages—including both extraction and clean-up kits—are available. Extraction-only and cleanup-only kits are also offered to suit your laboratory’s sample preparation needs. These pre-packaged kits save time and money, make QuEChERS procedures easier and more convenient, and ensure quality to yield reproducible results and excellent recoveries for a wide variety of analytes.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_Qu_E_Ch_ERS_Sample_Preparation_Kits_2_1e99f0c81b.jpg" alt="Thermo Scientific QuEChERS Sample Preparation Kits" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_Qu_E_Ch_ERS_Sample_Preparation_Kits_2_1e99f0c81b.jpg 217w," sizes="100vw" width="891" height="640"><h3>Typical QuEChERS workflow</h3><div><div><div><div><div>As shown in the workflow diagram below, the QuEChERS method has four basic steps:<ol><li>Homogenize sample (fruit or vegetable)</li><li>Extract analytes of interest from a sample using extraction salts (pesticide residues, veterinary drugs, and/or mycotoxins)</li><li>Clean-up the resulting supernatant using dispersive solid phase extraction (dSPE)</li><li>Analyze by GC-MS or LC-MS</li></ol><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_Qu_E_Ch_ERS_Sample_Preparation_Kits_496491ceff.jpeg" alt="Thermo Scientific QuEChERS Sample Preparation Kits" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_Qu_E_Ch_ERS_Sample_Preparation_Kits_496491ceff.jpeg 245w," sizes="100vw" width="1170" height="706"><div><h3>QuEChERS products</h3></div><div><h4>QuEChERS extraction kits for original 2003 method</h4></div><div>The original QuEChERS method (Anastassiades et al, 2003) was developed by Steven J. Lehotay and Michelangelo Anastassiades in 2003 for the determination of pesticide residues in fruits and vegetables. The original method was created to analyze non-base-sensitive compounds and uses a sodium chloride buffer to reduce polar interferences and enhance extraction. Buffering is an important part of the QuEChERS procedure because it allows for analysis of pesticides and other residues that display pH dependence in their recoveries, depending on the sample matrix. Three different extraction kits are available to support the original 2003 QuEChERS method.<h5>Chemicals used in the original 2003 method</h5></div><ul><li>Acetonitrile: Used to perform single-phase extraction (SPE) on a sample</li><li>Anhydrous MgSO₄: Induces phase separation between water content in sample and acetonitrile layer during liquid-liquid partitioning step; removes remaining water from sample during dispersive solid phase extraction (dSPE) step</li><li>NaCl: Induces phase separation between water content in sample and acetonitrile layer during liquid-liquid partitioning step; removes residual water from sample; reduces polar interference and enhances extraction</li><li>PSA: Primary secondary amine, used to remove polar matrix components, citric co-extractives, and free fatty acids, from sample during dispersive solid phase extraction (dSPE) step</li></ul><div><h4>QuEChERS extraction and clean-up kits for AOAC 2007.01 method</h4>The AOAC 2007.01 QuEChERS Method was developed by Steven J. Lehotay and his co-workers, who modified the original 2003 method to accommodate the use of acetate buffering at higher concentration for greater buffering strength. Buffering is an important part of the QuEChERS procedure because it allows for analysis of pesticides and other residues that display pH dependence in their recoveries, depending on the sample matrix. These extraction and clean-up products here support the AOAC 2007.01 method.<div><h5>Chemicals used in the AOAC 2007.01 method</h5><ul><li>Acetonitrile: Used to perform single-phase extraction on a sample</li><li>Anhydrous MgSO₄: Induces phase separation between water content in sample and acetonitrile layer during liquid-liquid partitioning step; removes remaining water from sample during dispersive solid phase extraction (dSPE) step</li><li>NaOAc: Buffers the sample to stabilize pH</li><li>PSA: Primary secondary amine, used to remove polar matrix components, citric co-extractives, and free fatty acids, from sample during dispersive solid phase extraction (dSPE) step</li><li>C18: Removes fats, sterols, and other non-polar interferences from sample</li><li>GCB: Graphitized carbon black, removes pigment (not recommended for use with planar pesticides)</li></ul><div><h4>QuEChERS extraction and clean-up kits for EN 15662 method</h4>The extraction and clean-up products here support the EN 15662 method. Widely used in Europe, the EN 15662 method was developed by Michelangelo Anastassiades and co-workers, who modified the original 2003 method to accommodate the use of citrate buffering at a relatively low buffering capacity. This variation uses a sodium chloride buffer to minimize polar interferences in addition to sodium citrate dihydrate and disodium citrate sesquihydrate buffers. Buffering is an important part of the QuEChERS procedure because it allows for analysis of pesticides and other residues that display pH dependence in their recoveries, depending on the sample matrix.<h5>Chemicals used in the EN 15662 method</h5><ul><li>Acetonitrile: Used to perform single-phase extraction on a sample</li><li>Anhydrous MgSO₄: Induces phase separation between water content in sample and acetonitrile layer during liquid-liquid partitioning step; removes remaining water from sample during dispersive solid phase extraction (dSPE) step</li><li>NaCl: Induces phase separation between water content in sample and acetonitrile layer during liquid-liquid partitioning step; removes residual water from sample</li><li>Trisodium Citrate: Buffers the sample to stabilize pH</li><li>Disodium Citrate Sesquihydrate: Buffers the sample to stabilize pH</li><li>PSA: Primary secondary amine, used to remove polar matrix components, citric co-extractives, and free fatty acids, from sample during dispersive solid phase extraction (dSPE) step</li><li>C18: Removes fats, sterols, and other non-polar interferences from sample</li><li>GCB: Graphitized carbon black, removes pigment (not recommended for use with planar pesticides)</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Thermo_Scientific_Qu_E_Ch_ERS_Sample_Preparation_Kits_3_721562526f.jpg" alt="Thermo Scientific QuEChERS Sample Preparation Kits" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Thermo_Scientific_Qu_E_Ch_ERS_Sample_Preparation_Kits_3_721562526f.jpg 245w," sizes="100vw" width="1471" height="488"><div><h4>QuEChERS clean-up kit for NY/T 1380-2007 method</h4></div><div>The NY/T 1380-2007 method is recommended by China Ministry of Agriculture for the QuEChERS Method sample preparation of 51 specific pesticide residues in fruits and vegetables with analysis by GC-MS.<h5>Chemicals used in the NY/T 1380-2007 method</h5><ul><li>Anhydrous MgSO₄: Induces phase separation between water content in sample and acetonitrile layer during liquid-liquid partitioning step; removes remaining water from sample during dispersive solid phase extraction (dSPE) step</li><li>PSA: Primary secondary amine, used to remove polar matrix components, citric co-extractives, and free fatty acids, from sample during dSPE step</li><li>C18: Removes fats, sterols, and other non-polar interferences from sample</li></ul></div></div></div></div></div></div></div></div></div></div></div></div>

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News from LabRulezGCMS Library - Week 33, 2026

Comprehensive Two-Dimensional Gas Chromatography

Graphene nanomaterial developed in Olomouc recognised among Europe’s most promising innovations