Determination of quaternary ammonium compounds in seawater samples by solid-phase extraction and liquid chromatography–mass spectrometry

Paul Bassarab, David Williams, John Dean, Edwin Ludkin, Justin Perry

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    76 Citations (Scopus)

    Abstract

    A method for the simultaneous determination of two biocidal quaternary ammonium compounds; didecyldimethylammonium chloride (didecyldimethyl quat) and dodecylbenzyldimethylammonium chloride (benzyl quat), in seawater by solid phase extraction (SPE) followed by liquid chromatography–mass spectrometry (LC–MS) was developed. The optimised procedure utilised off-line extraction of the analytes from seawater using polymeric (Strata-X) SPE cartridges. Recoveries ranged from 80 to 105%, with detection limits at the low parts-per-trillion (ng/l) level for both analytes. To demonstrate sensitivity, environmental concentrations were measured at three different locations along the North East coast of England with measured values in the range 120–270 ng/l.
    Original languageEnglish
    Pages (from-to)673-677
    JournalJournal of Chromatography A
    Volume1218
    Issue number5
    DOIs
    Publication statusPublished - Feb 2011

    Keywords

    • Quaternary ammonium salts
    • Seawater-Analysis

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