GC-MS column Articles
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A comparison of two solid phase extraction methods for the analysis of Polyaromatic Hydrocarbons in butter
Background Polyaromatic hydrocarbons (PAHs) are ubiquitous in the environment, resulting from both natural and manmade sources of combustion. Farm animals, such as cows, can become exposed to them through both consumption of contaminated feed and water, and inhalation of contaminated atmosphere1. Consequently, these compounds can be present in dairy products produced from cow’s milk such ...
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US EPA Method 524.4 with the Tekmar Lumin P & T Concentrator and Thermo Scientific TRACE 1310 GC and ISQ LT MS System
Abstract US EPA Method 524.4 is used primarily by environmental labs for the analysis of volatile organic compounds (VOCs) in drinking water. While this method is effective at concentrating the trace levels of VOCs sometimes found in finished drinking water, it also tends to transfer significant quantities of water vapor to the gas chromatography-mass spectrometry instruments. Teledyne ...
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US EPA Method 524.3 with the Tekmar Lumin P & T Concentrator and Agilent 7890B GC and 5977A MSD System
Abstract US EPA Method 524.3 is used primarily by environmental labs for the analysis of volatile organic compounds (VOCs) in drinking water. While this method is effective at concentrating the trace levels of VOCs sometimes found in finished drinking water, it also tends to transfer significant quantities of water vapor to the gas chromatography-mass spectrometry (GC-MS) instruments. Teledyne ...
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US EPA Method 524.3 with the Tekmar Lumin P & T Concentrator and Thermo Scientific TRACE 1310 GC and ISQ LT MS System
Abstract US EPA Method 524.3 is used primarily by environmental labs for the analysis of volatile organic compounds (VOCs) in drinking water. While this method is effective at concentrating the trace levels of VOCs sometimes found in finished drinking water, it also tends to transfer significant quantities of water vapor to the gas chromatography-mass spectrometry (GC-MS) instruments. Teledyne ...
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US EPA Method 524.4 with the Tekmar Lumin P & T Concentrator and Agilent 7890B GC and 5977A MSD System
Abstract US EPA Method 524.4 is used primarily by environmental labs for the analysis of volatile organic compounds (VOCs) in drinking water. While this method is effective at concentrating the trace levels of VOCs sometimes found in finished drinking water, it also tends to transfer significant quantities of water vapor to the gas chromatography-mass spectrometry (GC-MS) instruments. Teledyne ...
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GC/MS analysis of a complex sample in DCM using hydrogen carrier gas
Summary Labs worldwide have recently found that helium has been in short supply, leaving a number of labs without carrier gas. Added to this, helium prices have doubled over the past 10 years causing a number of labs to look into alternative carrier gases for GC, such as nitrogen and hydrogen. As well as lower price and unlimited availability, hydrogen has a number of potential advantages over ...
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Chromatography Tips
No.1 Gas Chromatography Tips Our Founders and engineers of the company had accumulated more than 60 years experience in the research and development of HPLC instrumentation; HPLC column technology; mass spectrometer installation, training and services; chemical and biochemical separation, detection and quantification, Proteomics and cancer biomarker research and instrumentation, etc. Our goal ...
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Surface Decontamination of PCBs (PCB-laden oil) by DeconGel 1101 and 1102
Abstract Field testing aboard the USS Missouri maritime museum vessel showed that excellent surface decontamination was achieved by applying DeconGel™ 1102 onto contaminated surfaces, resulting in encapsulation of PCB contaminant by DeconGel's active components. For all contaminated surfaces tested, EPA PCB limit standards (Regulations 761.79, 761.123) of < 10 ug/100 cm2 were achieved ...
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