期刊
CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
卷 26, 期 1, 页码 35-44出版社
SCIENCE PRESS
DOI: 10.1007/s00343-008-0035-2
关键词
bivalve; high resolution gas chromatography (HRGC)/high resolution mass spectrometer (HRMS); polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs); pentachlorophenol (PCP); surface sediment
Surface sediments and bivalves were collected from the Changjiang Estuary in December 2003 and November 2004, respectively. Polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs) in these samples were measured with high-resolution chromatography (HRGC)/High Resolution Mass Spectrometer (HRMS). The concentrations of total PCDD/Fs and toxic equivalent (TEQ) were 169.83 +/- 119.63 and 0.81 +/- 0.36 pg/g dry weight (dw) in sediments, and 580.33 +/- 240.17 and 7.24 +/- 3.65 pg/g dw in bivalves. The homolog compositions of PCDD/Fs were similar among samples, the most abundant congener was octa-chlorinated dibenzo-p-dioxin (OCDD) and then octa-chlorinated dibenzofuran (OCDF) and 1,2,3,4,6,7,8-hepta-chlorinated dibenzo-p-dioxin (HOCDD). The herbicide pentachlorophenol (PCP) and sodium pentachlorophenol (Na-PCP) were proved the main source of PCDD/Fs in this area.
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