gas chromatography system Articles
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Unplanned urbanization: Assessment through calculation of environmental degradation index
Abstract: Benzene Exposure was evaluated in adults and children living in Adelaide, South Australia by measuring benzene and urinary s-phenylmercapturic acid (SPMA). To determine of benzene exposure in each subject the personal passive samplers was used and samples were analyzed by gas chromatography system equipped to flame ionization detector. The level of SPMA was determined by competitive ...
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Evaluation of benzene exposure in adults and urinary s-phenylmercapturic acid in children living in Adelaide, South Australia
Abstract: Benzene Exposure was evaluated in adults and children living in Adelaide, South Australia by measuring benzene and urinary s-phenylmercapturic acid (SPMA). To determine of benzene exposure in each subject the personal passive samplers was used and samples were analyzed by gas chromatography system equipped to flame ionization detector. The level of SPMA was determined by competitive ...
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Proficiency test of non-target screening with gas chromatography mass spectrometry to confirm a detected contamination of raw and drinking water
Much of the water supply industry has implemented online monitoring and warning systems for chemical or biological contaminations. When a contamination is detected, further investigations are necessary to confirm or to cancel the initial alarm. The proficiency of a non-target screening approach with solid phase extraction and GCMS in full-scan mode was examined. A selection of pesticides and ...
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Advanced Gas Detection Technology supports Arctic Greenhouse Gas Research - Case Study
Enormous quantities of greenhouse gases (GHG) exist within Arctic ice and frozen soils, so with the threat of global warming, a clear understanding of the relationship between GHG in the atmosphere and in the ice/soil is vital because melting of permafrost could cause a dangerous climate tipping point. There can be few more challenging environments for monitoring gases, but PhD researcher Martin ...
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GC Analysis of Crude Oil Samples in Compliance with ASTM D5307
In the ASTM D5307 test method, crude oil containing components with boiling points to temperatures in excess of 538C (C44 or equivalent) are analyzed by a simulated distillation GC system by the internal standard method. A detailed boiling point distribution graph is created for the fraction with boiling points lower than 538C. The fraction with boiling points above 538C is calculated as a ...
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System Description for Monitoring Volatile Hydrocarbons
To help build a comprehensive Industrial Hygiene program, Buck Scientific introduces the IH910 vapor monitoring system utilizing our model 910 gas chromatograph and IH300 air sampling train. Designed to analyze hydrocarbons in air, such as degreasing solvents and paint vapors emitted during plant operations, the IH910 penetrates the 1mg/m3 detection barrier erected by other field portable ...
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Comparison of greenhouse gas analyzers -measurements using photoacoustic, laser, FTIR analyzers and gas chromatography
In the last decades, several technologies have been developed to measure greenhouse gas (GHG) concentrations and fluxes. We compared six devices using different measurement technologies: two gas chromatographic systems with a barrier discharge ionization detector (GC-BID) and an electron capture detector (GC-ECD), respectively, a portable GHG analyzer based on laser absorption, a photoacoustic ...
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Development of a novel odor measurement system using gas chromatography
This paper describes a novel odor measurement system for creating arrays of virtual chemical sensors with nonoverlapping responses using ultrahigh-speed gas chromatography with a surface acoustic wave sensor (GC/SAW). This GC/SAW system provides high-resolution twodimensional olfactory images for easy recognition of many complex odors. Separation and quantification of the individual chemicals ...
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Leader in sample preparation systems benefits from Axetris MFCs’ high dynamic range - Case Study
Split ratio flexibility of GC injector increased 30-fold A leading manufacturer of analytical sample preparation systems in gas chromatography (GC) switched to Axetris MFCs - and in doing so, simplified their product range, while offering their customers at least 30 times more flexibility in split ratio. The market-leading dynamic range of Axetris mass flow controllers (MFCs)—with their ...
By Axetris AG
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Everything You Need to Know about VOC Monitoring System
From acute lower respiratory infections in children to lung cancer, the number of diseases concerning the worsening air quality petrifies people globally. Its damages have been recognized by the World Health Organization, which calls the worldwide air pollution crisis the “largest single environmental health risk.” Among all the air pollutants, VOCs are the ones governments have to ...
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Texas Instruments - A Novel Separation Technique for the Analysis of Trace Levels of Atmospheric Contaminants in Inert Semiconductor Process Gases
A NOVEL SEPARATION TECHNIQUE FOR THE ANALYSIS OF TRACELEVELS OF ATMOSPHERIC CONTAMINANTS IN INERTSEMICONDUCTOR PROCESS GASES J. Scott McWilliams, Alan Johnson, Charlene Long, Jeremiah D. Hogan*Texas Instruments, Inc.Dallas, TX 75265 Low ppb detection limits for contamination in cylinder gases have been achieved with gas chromatography using a modified gas injection system and megabore capillary ...
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Celebrating World Laboratory Day at Techcomp
April 23rd marks World Laboratory Day, a day to celebrate laboratories across the globe where scientists conduct valuable research and make new discoveries to improve our everyday lives. Although the origins of world Laboratory Day are still unclear, it gives us a chance to reflect on the great achievements and breakthroughs in scientific research.At Techcomp, we are delighted to celebrate World ...
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