The 1993 QUASIMEME laboratory-performance study: chlorobiphenyls in fish oil and standard solutions

D.E. Wells, J. de Boer

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    29 Citations (Scopus)

    Abstract

    A laboratory-performance study has been undertaken to improve the measurement of chlorobiphenyls in marine biota as part of the QUASIMEME (EU - Measurement and Testing) project. Fifty-two laboratories were invited to participate, of which 47 returned data on nine congeners in iso-octane solution and in cod liver oil. The concentration of CBs ranged between 7 and 124 μg kg-1 in the oil. The robust statistical analysis gave a within-laboratory relative standard deviation from 5.7 to 14.4% and between-laboratory relative standard deviation from 17.6 to 37%. Over 60% of all errors were due to inaccurate calibration, poor GC separation and non-analytical mistakes by 13 of the laboratories.
    Original languageEnglish
    Pages (from-to)174-184
    JournalMarine Pollution Bulletin
    Volume29
    Issue number4-5
    DOIs
    Publication statusPublished - 1994

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