GC autosampling Articles
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Comparison of Mold Odor Analysis in Water by Purge and Trap (PTC) and Solid-Phase Microextraction (SPME)
Abstract Taste and odor are important to consumers when it comes to drinking water. Two compounds that are responsible for many taste and odor issues are geosmin and 2-methylisoborneol. Both of these compounds are produced by microbes and have very low odor thresholds. Because of this, many drinking water laboratories require detection levels of below 10ppt. Analysis of these compounds is usually ...
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An Alternative Method to RSK 175 using a Purge and Trap Concentrator and GC/FID
Abstract With the growing price of oil, many alternative energy sources are being explored. Natural gas prices are actually decreasing, in large part to the use of hydraulic fracturing in areas like the Marcellus Shale in Pennsylvania. Due to increased concern over the hydrofracturing process and the release of methane and other chemicals into the local drinking water, a need has developed for ...
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An Alternative Method to RSK 175 using a Purge and Trap Concentrator and GC/FID
Abstract With the growing price of oil, many alternative energy sources are being explored. Natural gas prices are actually decreasing, in large part to the use of hydraulic fracturing in areas like the Marcellus Shale in Pennsylvania. Due to increased concern over the hydrofracturing process and the release of methane and other chemicals into the local drinking water, a need has developed for ...
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Optimization Techniques for Performance of USEPA Methods 5030, 5035, and Determinative Methods 524.2 and 8260 utilizing the Atomx Concentrator/Multimatrix Autosampler and an Agilent 7890A GC and 5975 inert XL MSD
Abstract Environmental Analysts are frequently tasked with developing methods to meet United States Environmental Protection Agency (USEPA) Method requirements. While the methods are written clearly, certain options are left to the analysts’ discretion. It is the intent of this paper to optimize the parameters required for acceptable performance within the methodology guidelines. ...
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Shimadzu Application Chemist gets Protected - Case Study
Senior Application Chemist at Shimadzu (Asia Pacific) PTE Ltd, Ting Zhi Wei Edwin, uses Peak Scientific gas generators to support his LC-MS instruments. Find out his experience with Peak's generators and how his lab has benefited from being [Peak Protected] Name: Ting Zhi Wei Edwin Job Title: Senior Application Chemist Company: Shimadzu (Asia Pacific) PTE LTD Peak Scientific has installed ...
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Validation of USEPA Method 524.2 Using a Stratum PTC and the New AQUATek 100 Autosampler
Abstract Automation is the key to increasing laboratory productivity and minimizing costs. It is equally important to prove that the changes in technology to achieve these results may be done without sacrificing sample integrity or data quality. The AQUATek 100 is a new vial autosampler which features many new benefits to help increase productivity, minimize carryover, and provide more ...
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Using Nitrogen Purge Gas for US EPA Drinking Water Methods
Abstract The USEPA developed Method 524.4, “Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry (Using Nitrogen Purge Gas)”, for identifying and measuring purgeable volatile organic compounds in surface water, groundwater, and drinking water. Due to the economic concerns associated with the cost of helium, this method allows for ...
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New Belgium Brewing Company - Case Study
Name: Dana Sedin Job Title: Chemistry Lab Manager Company: New Belgium Brewing Company Dana Sedin – Chemistry Lab Manager, New Belgium Brewing Company Peak Scientific Helps New Belgium Brewing Company in Crafting Fine Beer with Precision New Belgium Brewing Company has become one of the largest craft breweries in the United States. Their flagship brew is an amber ale called Fat Tire, ...
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Analysis of Tetrahydrocannabinol Vape Oils Using Pyroprobe by Thermal Extraction
Abstract This application note demonstrates a multi-step thermal extraction study on Tetrahydrocannabinol (THC) vape oils. Introduction E-cigarettes have gained popularity in recent years, in conjunction with the legalization of marijuana in many U.S. states. Authentic THC vape oils are not easily distinguishable from the counterfeits, which are poorly regulated and can cause severe lung ...
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Pyrolysis-GC/MS Real and Faux Leather
Application Note Textiles Abstract Pyrolysis reveals components and differences between different leather and faux leather products. Introduction Pyrolysis-GC/MS allows for the analysis of organic materials which are too large to be compatible with GC alone. Material is heated in a controlled way, facilitating breakdown into volatile compounds which can be studied by GC/MS. Results are polymer ...
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Mold Odor Analysis Using a Purge and Trap Multimatrix Autosampler
Abstract Taste and odor are widely associated with drinking water quality. Musty odors, caused by compounds such as geosmin and 2-methylisoborneol (MIB), may lead consumers to believe their water is unsafe. These compounds are byproducts of the growth of blue-green algae and other microbes. Since consumers rely on taste and odor as primary indicators for water safety, water suppliers take steps ...
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Validation of USEPA Method 524.2 Using a Stratum PTC, AQUATek 100 Autosampler, and Perkin-Elmer Clarus 600 GC/MS
Abstract The US EPA developed Method 524.2¹, “Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry”, for identifying and measuring purgeable volatile organic compounds (VOC) in surface water, groundwater, and drinking water. Due to the required sensitivity of this method, the use of purge and trap gas chromatography is ...
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Validation of USEPA Method 524.2 Using a Stratum PTC, AQUATek 100 Autosampler, and Perkin-Elmer Clarus 600 GC/MS
Abstract The US EPA developed Method 524.2¹, “Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry”, for identifying and measuring purgeable volatile organic compounds (VOC) in surface water, groundwater, and drinking water. Due to the required sensitivity of this method, the use of purge and trap gas chromatography is ...
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US EPA Method 524.2 with the Tekmar Lumin P&T Concentrator, AQUATek LVA and Agilent 7890B GC/5977A MS
Abstract US EPA Method 524.2 was used to determine the concentration of volatile organic compounds (VOCs) in drinking water. The Teledyne Tekmar Lumin purge and trap (P&T) concentrator, along with an AQUATek LVA (liquid vial autosampler) and Agilent 7890B GC/5977A MS was used to create a working linear calibration curve and method detection limits (MDLs) for target compounds. This study will ...
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Large Volume Splitless Injection Using an Unmodified Split/Splitless Inlet and GC-TOFMS for Pesticides and Brominated Flame Retardants
Abstract Large volume splitless injection for gas chromatography typically requires a special injection port, for example, a programmable temperature vaporizer (PTV), but an alternative setup using concurrent solvent recondensation–large volume splitless injection (CSR-LVSI) and a split/splitless injection port has been reported. This technique was used here, both with and without sample ...
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