capillary GC column Articles

  • Environmental Applications Performed Using Equity Capillary GC columns

    Various Environmental Applications performed on the Supelco® Equity line of capillary GC columns; specifically the 100% poly(dimethylsiloxane) and poly(5% diphenyl.95% dimethylpolysiloxane) phases.  Applications include the following; USEPA Method 8270 for semivolatile compounds; USEPA Method 8081 for chlorinated pesticides; USEPA Method 8082 for polychlorinated biphenyls; diesel fuel; ...


    By MilliporeSigma

  • Capillary GC Columns for Analysis of BTEX Hydrocarbons

    A number of different stationary phases have been used for analyzing benzene, toluene, ethylbenzene, and xylene hydrocarbons (the BTEX) compounds). Capillary columns based on a nonpolar shape-selective phase, a chiral stationary phase, and a polyalkylene glycol phase, and support coated open tubular columns (SCOT), exhibit differing abilities to resolve these compounds. A Bentone ...


    By MilliporeSigma

  • 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 MilliporeSigma

  • Evaluations of Polar and Highly Polar Ionic Liquid Capillary GC Columns with Environmental Samples

    Ionic liquids are a class of non-molecular ionic solvents with low melting points.  These liquids are unique combinations of cations and anions and can provide a variety of different selectivities when used as stationary phases in capillary gas chromatography.  A number of ionic liquid phases have been evaluated and characterized for selectivity and determined to be polar or highly ...


    By MilliporeSigma

  • Achieve Exceptional Resolution of PAHs, Including Several Isomer Sets Using SLB®-ILPAH Capillary GC Columns

    originally published in Supelco®'s Analytix Reporter Journal Issue 1 2018 by Merck KGaA, Darmstadt, Germany Visit SigmaAldrich.com/ar-reg Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous in the environment. They belong to a group known as persistent organic pollutants (POPs). Monitoring is important because they are identified as carcinogens. Multiple isomers exist, which are ...

  • Monitor BTEX Compounds and Fuels in Water, Using Solid Phase Microextraction and Capillary GC

    BTEX compounds, kerosene, diesel fuel, or gasoline in water or aqueous suspensions of soil can be monitored by solid phase microextraction (SPME) and capillary GC on a short, narrow bore column (15mx 0.20mm ID).   A sample can be extracted and analyzed in less than 40 minutes.   Because no solvent is required, sensitive detection id scharacteristic of SPME/GC analyses.   ...


    By MilliporeSigma

  • Fast Analysis of Environmental Samples, Using Solid-Phase Microextraction (SPME)

    Solid Phase MicroExtraction (SPME) is an alternative to conventional sample extraction techniques. In SPME, analytes establish an equilibrium between the sample matrix and a stationary phase coated on a fused silica fiber (Figure A). The fiber is thermally desorbed in the injection port of the GC, which transfers the analytes into the capillary column. Because no solvent is injected, and the ...


    By MilliporeSigma

  • Transition metals cobaltites spinel for depollution of NOₓ emissions using SCR technology

    Abstract The catalytic performance of various transition metal (M = Cu, Mn, and Ni) cobaltites prepared by nanocasting method were investigated for the selective catalytic reduction (SCR) of NO under lean burn conditions. KIT-6 was used as a hard template in the nanocasting method for preparation of catalysts. The catalyst samples were characterized by various techniques such as ...


    By ECO Physics AG

  • 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 ...


    By AcuTech Scientific Inc.

  • 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 ...

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