capillary gas chromatography column Articles

  • High Resolution Detailed Hydrocarbon Analyses by Capillary Column Gas Chromatography

    In the petrochemical industry, samples such as petroleum naphthas and gasolines routinely must be quantitatively separated into their individual components.  Because these petroleum-derived samples consist of hundreds of compounds, petroleum analysts require chromatography columns that offer high resolution.  We have developed polar and nonpolar capillary gas chromatography columns to ...


    By Sigma-Aldrich Co., LLC

  • 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.

  • New developments in chromatography

    Welcome to Chromatography News from Varian, Inc., our newsletter dedicated to letting you know what’s new in Chromatography and how it can help you achieve the best results in your analysis, in the fastest and most cost-effective way. This issue focuses on Varian’s high quality, stable, FactorFourTM (VF) capillary gas chromatography columns for the best results in GC. In response to demand from ...


  • 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 Sigma-Aldrich Co., LLC

  • Application of gas chromatography-mass spectrometry preceded by solvent extraction to determine volatile fatty acids in wastewater of municipal, animal farm and landfill origin

    This study describes extraction of selected volatile fatty acids (VFAs) (containing from 2 up to 8 carbon atoms) with methyl-tert-butyl ether (MTBE) from polluted aqueous samples followed by separation, identification and quantification by gas chromatography coupled with mass spectrometry (GC-MS). Extraction parameters such as time and number of extractions, volume ratio, effect of acidification ...


    By IWA Publishing

  • Target GC-MS Analysis using Accelerated Column Heating and Interactive Deconvolution Software

    In diverse fields ranging from environmental samples to complex fl avor preparations, high performance, high resolution capillary gas chromatography/mass spectrometry, GC-MS, has become the preferred technique for identifying and quantifying target compounds at trace levels. Many of these samples are characterized by very complex matrices, which provide a substantial challenge for contemporary ...


  • GC Analyses of Polynuclear Aromatic Hydrocarbons

    Polynuclear aromatic hydrocarbons (PAHs) can be separated by packed column or capillary column gas chromatography. An SPB-5 bonded phase fused silica capillary  column separates the 16 PAHs considered priority pollutants in wastewater by the US Pal SP-301, a liquid crystal stationary phase in packed GC columns, resolves benzo(e)pyrene and benzo(a)pyrene. This publication discusses ...


    By Sigma-Aldrich Co., LLC

  • Validation of USEPA Method 524.2 Using a Stratum PTC, AQUATek 100 Autosampler, and Perkin-Elmer Clarus 600 GC/MS

    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 vital. This ...


    By Teledyne Tekmar

  • 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 ...


    By Environics, Inc.

  • Determination of VOCs in water using static headspace GC/MS with simultaneous full scan and selective ion recording

    The combination of static headspace sample introduction and gas chromatography/mass spectrometry (HS/GC/MS) provides the analyst with a powerful, fully automated technique for the determination of trace volatile organic compounds (VOCs) in water. Samples may be hermetically sealed in the headspace vial at the point of sampling. This approach avoids errors due to glassware cross-contamination and ...


    By PerkinElmer, Inc.

  • Is Microflow LC a Reality or Perception?

    Microflow or nanoflow chromatography has been used mostly in the academic and fundamental research environment in the past for its various advantages over analytical liquid chromatography, but rarely in the industrial settings. This is most likely because many of us believe it is a pain-in-the-neck technique to perform! But is this a reality or just a ...


    By Waters Corporation

  • 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 ...

  • Proposed plans for UCMR Program

    At an April 2010 stakeholder’s meeting, the EPA discussed proposed plans for the third phase of the Unregulated Contaminant Monitoring Regulation (UCMR) program. If approved, approximately 4,800 public water utilities will be required to monitor up to 30 contaminants starting in 2013. The second phase of UCMR (UCMR 2) sampling, which began in 2008, concludes at the end of this year. UCMR 2 ...


  • Some notes about Fats and Oils in Food and about FAME and FAMEWAX

    In Europe, the last transition periods named in REGULATION (EU) No 1169/2011 on the provision of food information to consumers are running out on Dec. 13th, 2016. Since then, a nutrition declaration is mandatory for nearly all packed food in Europe, wherein the amounts of fat, saturates, carbohydrate, sugars, protein and salt have to be included. The content of the mandatory nutrition ...


    By Restek Corporation

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