Removal of chlorinated diphenyl ether interferences for analyses of PCDDs and PCDFs in fish
1992; Elsevier BV; Volume: 24; Issue: 5 Linguagem: Inglês
10.1016/0045-6535(92)90210-i
ISSN1879-1298
Autores Tópico(s)Effects and risks of endocrine disrupting chemicals
ResumoThe presence of chlorinated diphenyl ethers (CDPEs) in environmental samples has been documented and is considered to be a potential interference in the determination of polychlorinated dibenzofurans (PCDFs) and dibenzo-p-dioxins (PCDDs). PCDD and PCDF methods should be validated to ensure removal of CDPEs as interferences. In our study, CDPE spiked samples and whole fish samples were cleaned up by selected techniques, and analyzed by mass spectrometry in the selected ion monitoring mode. The absence of any CDPEs in the samples subsequent to this cleanup was confirmed. Total levels of CDPEs in carp and northern pike whole fish samples from Whitby Harbour, Lake Ontario, ranged from 768 to 14005 ng/g, the total being based upon 15 CDPE congeners. Corresponding levels of total PCDFs ranged from 58 to 254 pg/g.
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