gc-ms Articles

  • Analysis of PBDEs in Sediment Using GC-MS/MS

    Polybrominated diphenyl ethers (PBDEs) are brominated flame retardants (BFRs) widely used in plastics. Due to their toxicity and persistence, their industrial production is to be eliminated under the Stockholm Convention. Contamination from PBDEs is widespread in the environment, including in sediments. In order to determine PBDEs in sediments, they need to be separated from a large amount of ...

  • GC-MS/MS Analysis of Pesticides in Drinking Water

    According to Japan’s list of drinking water quality control substances, pesticides are included as supplemental items subject to analysis. Designed to complement the standards, the Ministry of Health, Labour and Welfare encourages water utilities to monitor pesticide levels and achieve specified targets. Among the 102 listed pesticides, 84 are simultaneously analyzed using solid-phase ...

  • GC/MS-SIM-An option for lower detection limits

    Select Ion Monitoring mode (GC/MS-SIM) is a technique used to perform low level GC/MS measurements of organic compounds. GC/MS-SIM can reduce reporting limits 10-100 fold and can minimize the effects of matrix interferences.                                                   ...

  • airmoTWA: New Expert System for GC-FID/MS

    Chromatotec has developed the first TRAP-GC-FID/MS designed for continuous monitoring of Volatile Organic Compounds (VOCs), inorganic molecules and permanent gases. In addition to the mass spectrometer (MS), this system encompasses the same trap, thermo desorption and separation technologies as airmoVOC analyzers (current mCERTS approved GCs analyzers). For VOCs analysis, the Flame Ionization ...


    By Chromatotec Group

  • Analysis of Opioids Using Isotope Dilution with GCMS-TQ8030 GC/MS/MS

    Development of methods for analysis of drugs of abuse has become a high priority for both forensic toxicology and law enforcement. The large numbers of individual drugs and new "designer drugs" has made method development for these compounds a significant undertaking. Gas chromatography mass spectrometry (GCMS) has been used extensively for analysis of drug residues and trace-level drugs in ...

  • GC-MS Analysis of Polychlorinated Dibenzodioxins and Polychlorinated Dibenzofurans

    Polychlorinated dibenzodioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) consist of 210 different compounds with varying degrees of toxicity, and the 17 congeners with chlorine substitution in the 2,3,7,8 positions are considered the most toxic. This chromatogram illustrates the separation of a 17 component 2,3,7,8-substituted PCDD and PCDF standard on a 30 m x 0.25 mm I.D. x 0.25 μm ...


    By Sigma-Aldrich Co., LLC

  • GC-MS Analysis Agricultural Pesticides on the SLB-5ms

    This application illustrates the analysis of 29 different agricultural pesticides of different classifications and functionalities, using the SLB-5ms, 30 m x 0.25 mm I.D., 0.25 μm  The analysis was done by GC-MS using selected ion monitoring (SIM) to allow detection of all compounds at 100 µg/L. The standard solution was made in toluene to increase it stability and enhance response ...


    By Sigma-Aldrich Co., LLC

  • The extraction and quantification of limonene from citrus rinds using GC/MS

    D-Limonene, shown in Figure 1, is a common naturally occurring compound with a citrus scent. It is often used as an additive in food products and fragrances, and is classified by the U.S. Food and Drug Administration (FDA) as Generally Recognized as Safe (GRAS)1. It has also been approved by the U.S. Environmental Protection Agency (EPA) for usage as a natural pesticide and insect repellent1. ...


    By PerkinElmer, Inc.

  • US EPA Method 625 Semivolatiles by GC-MS on the Supelco SLB™-5ms

      Application Report 473: US EPA Method 625 describes the procedure for the analysis of industrial and municipal waste water samples by GC-MS. This analysis illustrates the separation of the single-peak base-neutral and acid compounds listed in the method, along with commonly used surrogates and internal standards. ...


    By Sigma-Aldrich Co., LLC

  • GC/MS analysis of a complex sample in DCM using hydrogen carrier gas

    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 helium, ...

  • US EPA Method 525.2 Semivolatiles by GC-MS on the Supelco SLB™-5ms

    US EPA Method 525.2 describes the procedure for the extraction and analysis of semivolatile organic compounds from drinking and source water. The compound list includes polynuclear aromatics, phthalates, pesticides, and polychlorinated biphenyls.  This application illustrates the separation of a majority of the single peak analytes listed in this method, using a SLB-5ms, 30 m x 0.25 mm I.D., ...


    By Sigma-Aldrich Co., LLC

  • Analysis of Multi-Pesticide Residues in Vegetables, Food, and Fruits by SPE/GC-MS

    Cleanup of matrices is the first, the most important, and the most critical step for both broad-spectrum screening and accurate determination of pesticides and their metabolites in vegetables,meats, drinks and fruits. In most cases, solid phase extraction (SPE) methods are used to clean up the extracts before the GC-MS analysis. The ideal SPE material(s) should remove the greatest number of food ...


    By Sigma-Aldrich Co., LLC

  • Solid Phase Microextraction of Organophosphate Insecticides and Analysis by Capillary GC/MS

    SPME was used to extract an aquatic sample for analysis of organophosphate insecticides by gas chromatography/mass spectrometry (GC/MS).  An SPME fiber coated with 8.5um of polyacryate yielded detection limits ranging from 0.10 to 0.56ug/L. SPME is a quick and highly sensitive sample preparation technique that eliminates the use of solvents.         ...


    By Sigma-Aldrich Co., LLC

  • Meeting the expanding needs of global food testing: Analysis of pesticides in vegetable matrix using triple quadrupole GC-MS/MS

    Globally ensuring the reliability of food onour table with food testing solutions. Globalization of food supplies has renderedfood testing a major challenge for manufacturersand other businesses; contamination and spoilingincidents have fuelled media coverage, as well asraising consumer concerns. Government andregulatory agencies such as the European Commission (EU), the US Food and ...


    By Bruker Corporation

  • Analysis of PCBs and Organochlorinated pesticides in river water using simultaneous Scan/MRM measurement in GC-MS/MS

    PCBs and some chlorinated pesticides are resistant to decomposition in the environment, and tend to accumulate in living organisms. As a result, they are designated as POPs (Persistent Organic Pollutants) under the Stockholm Convention. In monitoring these environmental pollutants in river water and sludge, sensitivity for the detection of trace quantities and separation from impurities in the ...

  • Enhanced separation of hop oils by flow-modulated GC×GC–TOF MS with Tandem Ionisation

    Beer contains hundreds of organic ingredients, with concentrations spanning many orders of magnitude, and including monoterpenes (C10) and sesquiterpenes (C15). These are aroma-active hydrocarbons found in the essential oils of various plants, including hops, and provide much of the characteristic ‘bitterness’ of the finished beer. Of the greatest importance for beer is the ...


    By SepSolve Analytical

  • Analysis of Organophosphorus Pesticides in Baby Foods Using a Triple-Quadrupole GC/MS/MS System

    Contamination of food products with pesticides is a growing concern because of recognized adverse health effects, increasing world-wide usage of pesticides, and increasing imports of raw foodstuffs from foreign sources. The concern is particularly acute for baby foods because of the high vulnerability of babies to adverse health effects from synthetic chemicals, particularly ...

  • Analysis of Pesticides in Baby Foods Using a GCMS-TQ8030 GC/MS/MS, Part II

    Contamination of food products with pesticides is a growing concern because of recognized adverse health effects, increasing world-wide usage of pesticides, and increasing imports of raw foodstuffs from foreign sources. The concern is particularly acute for baby foods because of the high vulnerability of babies to health effects from synthetic chemicals such as pesticides. Gas chromatography ...

  • Comprehensive analysis of tobacco smoke using TD–GC×GC–TOF MS with Tandem Ionisation

    The hazardous constituents of cigarette smoke have attracted considerable attention lately, especially with increasing regulation around the world limiting or banning smoking in public places – and even in private cars if children are present. From an analytical perspective, however, there is much that remains to be learnt about the composition of cigarette smoke, because of its high degree ...


    By SepSolve Analytical

  • Webinar Highlights: Microfluidics for macromolecules

    Hi, I’m Jim Murphy, Principal Consulting Chemist at Waters, and I recently collaborated with Lucinda (Cohen) Hittle to present an exciting webinar on the use of microflow chromatography for macromolecules.  Lucinda, a Director of Discovery Bioanalytics at Merck, presented an overview of the use of LC-MS for peptide analysis along with various case studies for in vitro and in vivo ...


    By Waters Corporation

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you