Determination of the brominated flame retardant, hexabroomcyclodocane in sediments and biota by liquid chromatography-electrospray ionization mass spectrometry

S. Morris, P. Bersuder, C.R. Allchin, B. Zegers, J.P. Boon, P.E.G. Leonards, J. de Boer

    Research output: Contribution to journalArticleAcademicpeer-review

    69 Citations (Scopus)

    Abstract

    A method involving reversed-phase, liquid chromatography coupled to electrospray ionisation mass spectrometry (LC-ESI-MS) was developed for separation, detection and quantitation of the alpha-, beta- and gamma-diastereoisomers of hexabromocyclododecane (HBCD). To address the lack of environmental data of this high-production-volume chemical, and to begin to understand the behaviour, the fate and the effects of these stereoisomers, a diastereoisomer-specific method is necessary. Currently, HBCD stereomeric separation is not possible using gas chromatography; thermally-induced rearrangements as well as decomposition of the compound occur at temperatures > 240 degrees C by the initial elimination of hydrogen bromide. The extraction of HBCDs, and subsequent clean-up procedures are similar to those used for polybrominated diphenylethers, and include Soxhlet, homogenisation, mechanical shaking, sulphuric acid treatment and gel-permeation chromatography. Single-quadrupole and ion-trap mass analysers as well as LC separations were optimised using pure and individual HBCD stereoisomers, and determinations were performed using selected ion monitoring (m/z 640.7) of the [M-H](-) ion. This article presents options for analyte extraction and information regarding instrument optimisation, and demonstrates that LC-MS is a suitable technique for quantifying HBCD stereoisomers in complex environmental matrices.
    Original languageEnglish
    Pages (from-to)343-349
    JournalTrAC : Trends in Analytical Chemistry
    Volume25
    Issue number4
    DOIs
    Publication statusPublished - 2006

    Keywords

    • diphenylethers

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