Abstract
A method based on selective pressurized liquid extraction (SPLE) followed by gas chromatography–negative ion chemical ionization-mass spectrometry (GC–NCI-MS) has been evaluated for analysis of decabromodiphenyl ether (PBDE-209) in sediment samples. Instrumental operating conditions such as source temperature and system pressure were optimized in the NCI-MS system, giving an instrumental detection limit of 2 pg. The limit of determination of the entire SPLE–GC–NCI-MS procedure was around 50 pg g−1 dry weight (dw), with repeatability of replicates between 4 and 21% relative standard deviation. Application of the method to 13 different river and marine sediment samples collected in Spain revealed that levels of decabromodiphenyl ether ranged between 2 and 132 ng g−1 dry weight.
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Acknowledgements
This work was financially supported by the Ministerio de Ciencia y Tecnología (TRACOAL, PPQ2001–1805-C03–01). R. Chaler and D. Fangul are thanked for MS assistance.
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Eljarrat, E., de la Cal, A. & Barceló, D. Determination of decabromodiphenyl ether in sediments using selective pressurized liquid extraction followed by GC–NCI-MS. Anal Bioanal Chem 378, 610–614 (2004). https://doi.org/10.1007/s00216-003-2220-7
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DOI: https://doi.org/10.1007/s00216-003-2220-7