hydrocarbons monitoring gc Articles

  • Two Detector Solution to Analyzing Sulfur

    Sulfur compounds are reactive, corrosive to pipes, and destructive to catalysts in petroleum refineries. Sulfur emission are strictly regulated globally. When released into the atmosphere sulfur dioxide converts to sulfuric acid resulting in adverse effects on human health and the environment. Sulfur detection is found useful in many other industries; therefore, detection of sulfur compounds in ...


    By Restek Corporation

  • Thermal Desorption-GC/MS Analysis of polycyclic aromatic hydrocarbons on fine particulates in air

    Polycyclic aromatic hydrocarbons (PAHs) are commonly found throughout the environment in soil, water and adsorbed to fine particulate matter in air. Of the 16 common PAHs, 7 have been classified as animal carcinogens by the International Agency for Research on Cancer (IARC). Resulting from this classification, PAHs are monitored and regulated in the environment. Analysis of PAHs in soil and water ...


    By PerkinElmer, Inc.

  • Analysis and interpretation of the monitoring data for C2?C11 hydrocarbons in the atmosphere of a rural Portuguese site

    This paper focuses the application of a measurement technique for determining atmospheric C2?C6 hydrocarbons after canister sampling and analysis by gas chromatography/flame ionisation detection (GC/FID), as well of an adsorption-sampling technique for C6?C11 compounds and GC/FID analysis after thermal desorption and cryogenic concentration. Tens of samples collected at Giesta, a rural area ...


    By Inderscience Publishers

  • Monitor Sulfur Compounds in Petroleum Chemical, Environmental, and Other Samples, Using a Special-Purpose Capillary GC Column

    Measurement of sulfur compounds is important to petroleum chemical analysts for several reasons, including a need to monitor odor problems and prevent catalyst poisoning.  Quantification of sulfur compounds is also important to environment analysts and to food, beverage and fragrance analysts for similar reasons.  Analyses of sulfur compounds can be complicated by the inability to ...


    By Sigma-Aldrich Co., LLC

  • Interpretation of total petroleum hydrocarbon (TPH) results with RaPID assay kits

    SUMMARY The SDI RaPID Assays for petroleum hydrocarbon fuels (Total BTEX, PAHs) have been shown to provide excellent correlation with GC based (8015M) and IR based (418.1) methodologies for testing Total Petroleum Hydrocarbons (TPH). Linear relationships between immunoassay and TPH results with both gasoline and diesel fuels are demonstrated. Fuel reactivities with immunoassay are shown to ...


  • Infrared differential absorption Lidar (DIAL) measurements of hydrocarbon emissions

    We report the application of an infrared (IR) differential absorption Lidar (DIAL) system (also capable of ultra violet measurements) built at the National Physical Laboratory (NPL), UK, to field measurements of total site emissions (controlled and fugitive) from petrochemical and landfill installations. The validation of the IR-DIAL was carried out via a series of controlled field experiments ...

  • Extraction & Analysis of PAHs in Olive Oil Using SupelMIP SPE – PAHs and GC-MS

    Polyaromatic hydrocarbons (PAHs) consist of fused aromatic rings and are formed as a by-product during the combustion of fuels. Seven PAHs in particular are known for their carcinogenic properties: benz[a]anthracene, benzo[a]pyrene, benzo[b]fluoranthene, benzo[k]fluoranthene, chrysene, dibenz[a,h]anthracene, and indeno[1,2,3-cd]pyrene. As such, they are monitored in both the environment and food ...


    By Sigma-Aldrich Co., LLC

  • Biofuels Gas Monitoring

    The Customer The Company is one of the world’s leading developers and producers of advanced fuels and green chemicals. The Process The Company uses a gasification process that breaks down wood chips, waste and other feedstock using plasma technology. The process produces a uniform synthetic gas (syngas) that is used to power their turbine engines. ...

  • Fast analysis of semi-volatile organic compounds using PTV-GC–TOF MS

    The evaluation of semi-volatile organic compounds (SVOCs) in environmental matrices poses many challenges for the analyst, not least the vast number that may be encountered in any given analysis. In addition, analyte reactivity and the potential for multiple analytes to co-elute makes achieving the required method detection limits (LODs or MDLs) quickly and cost-effectively a formidable task ...


    By SepSolve Analytical

  • 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 ...


    By Restek Corporation

  • Air Monitoring for the Gulf Oil Spill

    Ambient air monitoring is a priority in the ongoing efforts to contain and manage the oil spill from the Deepwater Horizon in the Gulf of Mexico. The following provides information about the kinds of airborne contaminants that are currently being monitored in the Gulf, how they are collected and how they are analyzed. For a given project, a suitable sampling plan – developed by ...


  • Avoiding Sewer Fires with Vapor Space Organics Monitoring

    ABSTRACTRegulation of flammable gases released from wastewater discharges is facilitated by the use of the Vapor Space Organics test method. Such regulation can reduce the risk of a flash sewer fire, resulting damage and potential injury. The updated 2003 VSO process developed by Severn Trent Laboratories produced data that was equivalent to the 1990 VSO process developed and used by the ...

  • Monitoring endocrine activity in kraft mill effluent treated by aerobic moving bed bioreactor system

    A Moving Bed Bioreactor (MBBR) was operated at three different hydraulic retention times for a period of 414 days. The fate of the extractive compounds and the estrogenic activity of the Pinus radiata kraft mill effluents were evaluated using Yeast Estrogen Screen (YES) and gas chromatography – mass spectrometry (GC-MS) detection. Results show that the MBBR reactor is able to remove between ...


    By IWA Publishing

  • Oil pollution in the Caspian Sea coastal waters

    The study aims to investigate hydrocarbon and pollutant concentrations in the southern coastal waters of the Caspian Sea to trace their origins and nature, including the effect of the beach materials on hydrocarbons for 11 sites in Golestan, Mazandaran, and Guilan provinces. Samples were collected from sandy and rocky sites for gas chromatography in five carbon ranges of gasoline, diesel oil, ...


    By Inderscience Publishers

  • Case study - Performance testing PAHs in soil

    These case studies highlight Sitelab’s accuracy from customers who have used the UVF-3100D for testing Target PAHs. This test correlates well to U.S. EPA Method 8270 or similar GC methods, which includes a list of 16 or more compounds. The analyzer is fitted with special optical filters sensitive to this same group of hydrocarbons. Examples of UVF-3100D testing Polycyclic Aromatic ...


    By Sitelab Corporation

  • TVOC measurement for LEED/green building evaluation

    Total Volatile Organic Compounds (TVOC) may be evaluated when building designers/managers are pursuing the Leadership in Energy and Environmental Design Green Building Rating System for New Construction (LEED-NC) EQ Credit 3.2. The latest LEED-NC guidance document specifies that the maximum allowed concentration of TVOC measured in a building (post construction, pre-occupancy) is 500 µg/m3; the ...


  • Understanding Oil-in-Water Instrument Specifications

    The measurement capabilities of oil-in-water analysis methods are described by several analytical figures-of-merit. Examples are: Range (Linear and Dynamic) Limit of Detection (LOD) Limit of Quantification (LOQ) Precision (Repeatability and Reproducibility) Sensitivity Accuracy Response Time Some or all of these are often specified by customers in the bid packages issued when selecting a ...

  • Triad expedites brownfields redevelopment in Fairbanks

    The Fairbanks North Star Borough (FNSB) used Triad in 2006-2007 to assess environmental conditions at a municipal property along the Chena River in Fairbanks, AK. FNSB accelerated the site investigation as part of a brownfields assessment grant received from the U.S. EPA in 2005. Low-level contamination had been identified onsite in past investigations, but its extent and impact on future ...

  • Case study - TPH Oil & Grease applications

    These case studies illustrate the performance generated from customers who have used Sitelab’s UVF-3100 analyzer for testing total petroleum hydrocarbons in the C10 to C50 range. Sitelab’s TPH-Oil calibration kit is designed to correlate well to laboratory “Oil and Grease” test methods. This includes EPA Methods 1664 and 9071B by Gravimetric, EPA Method 418.1 by Infrared ...


    By Sitelab Corporation

  • Peroxygen Mediated Bioremediation of MTBE.

    ABSTRACT: Evidence is mounting, from laboratory and field studies, that oxygen plays a role in the bioremediation of methyl tertiary butyl ether (MTBE). Our experience with a number of commercial applications of peroxygen, in the form of Oxygen Release Compound (ORCâ), correlates the provision of enhanced aerobic conditions with enhanced MTBE biodegradation. Subsequent laboratory and field ...


    By REGENESIS

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