Journal
ENVIRONMENTAL POLLUTION
Volume 160, Issue -, Pages 88-94Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2011.09.004
Keywords
Persistent organic pollutant; Short chain chlorinated paraffins; Wastewater treatment plants; Sewage sludge
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Funding
- National Natural Science Foundation [21007078, 21007085, 21077114, 20890111]
- National Basic Research Program of China [2009CB421605]
- Chinese Academy of Sciences [KZCX2-YW-QN409]
- China Postdoctoral Science Foundation [20090460544, 201003166]
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Short chain chlorinated paraffins (SCCPs) are listed as persistent organic pollutant candidates in the Stockholm Convention and are receiving more and more attentions worldwide. In general, concentrations of contaminants in sewage sludge can give an important indication on their pollution levels at a local/regional basis. In this study, SCCPs were investigated in sewage sludge samples collected from 52 wastewater treatment plants in China. Concentrations of total SCCPs (Sigma SCCPs) in sludge were in the range of 0.80-52.7 mu g/g dry weight (dw), with a mean value of 10.7 mu g/g dw. Most of SCCPs in the sludge samples showed a similar congener distribution patterns, and C-11 and Cl-7,Cl-8 were identified as the dominant carbon and chlorine congener groups. Significant linear relationships were found among different SCCP congener groups (r(2) > 0.9). High concentrations of SCCPs in sewage sludge imply that SCCPs are widely present in China. (C) 2011 Elsevier Ltd. All rights reserved.
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