期刊
ENVIRONMENTAL POLLUTION
卷 190, 期 -, 页码 82-90出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2014.03.024
关键词
Organochlorines; Black carbon; Distribution status; Mass inventories; Coastal sediments; Pakistan
资金
- Chinese Academy of Sciences [KZCX2-YW-GJ02]
- Natural Environment Research Council [ceh010010] Funding Source: researchfish
Levels of total organic carbon (TOC) and black carbon (BC) were determined together with those of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in the selected eighteen coastal sites (n = 285) along the Arabian Sea from Pakistan. Results showed that the total concentration of TOC, BC, Sigma OCPs and Sigma(26)PCBs ranged between 0.3 and 2.9% dw, 0.1-0.2% dw, 0.9-110 ng g(-1) dw and 6.2-1200 ng g(-1) dw, respectively. Correlation analysis of BC (r = 0.26-0.89) and TOC (r = 0.06-0.69) revealed a stronger association with studied compounds. The sedimentary depositional fluxes (D) for Sigma OCPs and Sigma(26)PCBs were calculated as 1.7 and 4.9 tons yr(-1), respectively. In the coastal belt of Pakistan, sedimentary mass inventories (I) indicated the presence of 13 and 37 metric tons of Sigma OCPs and Sigma(26)PCBs, respectively. (C) 2014 Elsevier Ltd. All rights reserved.
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