Abstract
A depletion solid-phase microextraction (SPME) method based on multiple SPME extraction was applied to estimate fibre coating–water distribution constants ( K fs) of brominated flame retardants. Several polybrominated diphenyl ethers (PBDEs) including compounds present in the commercial mixture “Pentamix”, and two polybrominated biphenyls (PBBs) were considered as target analytes. One hundred-micrometer poly(dimethylsiloxane) (PDMS) coating fibre was selected to estimate partition coefficients. SPME kinetics studies at 25 and 100 °C were performed. K fs values obtained at both temperatures for brominated flame retardants were compared with the corresponding octanol–water partition coefficients ( K ow) values found in literature. A linear log–log relationship between K ow with K fs was found. To the best of our knowledge, this is the first study where brominated flame retardants K fs values are estimated.
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