STP737

    Applications and Results of Analytical Methods Used in Monitoring Environmental Contaminants

    Published: Jan 1981


      Format Pages Price  
    PDF Version (336K) 21 $25   ADD TO CART
    Complete Source PDF (6.2M) 21 $55   ADD TO CART


    Abstract

    Techniques being developed to purify, fractionate, and classify complex organic chemical residues will simplify the detection of these residues and provide more comprehensive data about them. These techniques include an integrated series of chromatographic processes, new technology in mass spectrometry, advances in glass capillarygas chromatography, and chemical derivatization.

    Gel permeation chromatography increases the efficiency of sample cleanup. Additional cleanup and selective separation of residues are achieved by adsorption chromatography (Florisil, silica gel, and carbon foam). An important finding which results from the use of this methodology is the identification of potentially toxic chlorinated dibenzofurans in fish tissue. An analytical scheme for isolating and detecting acidic pollutants was developed: derivatization of phenols and other acidics to pentafluoro benzyl ethers enhances their chromatography and detection. Partial automation of the sample cleanup and enrichment of residues reduces the time required for analyses, and the new separation techniques increase the number of components that are identifiable from a tissue matrix.

    Keywords:

    environmental contaminants, pesticides, phenols, polychlorinated biphenyls (PCBs), chlorinated dibenzo-, p, -dioxins, dibenzofurans, comprehensive cleanup, gel permeation chromatography (GPC), carbon chromatography, alkali metal-treated silica gel, chromatographic controller, toxaphene, polychlorinated terpenes, Dacthal, aquatic toxicology, hazard assessment


    Author Information:

    Ribick, MA
    Chemists and chief chemist, U.S. Department of Interior, U.S. Fish and Wildlife Service, Columbia National Fisheries Research Laboratory, Columbia, Mo.

    Smith, LM
    Chemists and chief chemist, U.S. Department of Interior, U.S. Fish and Wildlife Service, Columbia National Fisheries Research Laboratory, Columbia, Mo.

    Dubay, GR
    Chemists and chief chemist, U.S. Department of Interior, U.S. Fish and Wildlife Service, Columbia National Fisheries Research Laboratory, Columbia, Mo.

    Stalling, DL
    Chemists and chief chemist, U.S. Department of Interior, U.S. Fish and Wildlife Service, Columbia National Fisheries Research Laboratory, Columbia, Mo.


    Paper ID: STP34161S

    Committee/Subcommittee: D19.06

    DOI: 10.1520/STP34161S


    CrossRef ASTM International is a member of CrossRef.