Concentration and source of polychlorinated naphthalenes in surface soils from the South of Jiangsu
XUE Ling-nan1,2, ZHANG Lin-li1,2, ZHANG Li-fei2, SHI Shuang-xin2, DONG Liang2, LI Xiao-xiu1
1. College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China; 2. State Environmental Protection Key Laboratory of Dioxin Pollution Control, National Research Center for Environmental Analysis and Measurement, Beijing 100029, China
Abstract：The concentrations, profiles and source apportionment of polychlorinated naphthalenes (PCNs) in 34surface soil samples from the South of Jiangsu were analyzed by gas chromatograph coupled with a triple quadrupole mass spectrometer. Total concentrations of PCNs in all samples ranged from 0.263 to 2.48ng/g dw with an average of 0.464ng/g dw except sampling point 16, which had the highest concentration of 2.48ng/g dw, the TEQs of PCNs ranged from 0.045 to 0.157pg/g dw, indicating a low concentration level. MonoCNs and DiCNs were the most predominant homologues in all the samples, accounting for 39.3%~91.4%. The congeners CN-66/67, CN-69 and CN-73 were the predominant contributors to the TEQs, accounting for 25.6%, 29.1% and 28.7%, respectively. The ratio of ΣPCNCom/ΣPCNs could indicate that the high temperature combustion process made great influence to the PCNs pollution in the South of Jiangsu. Correlation analysis and principal component analysis showed that the use of old electrical equipment and traffic emissions might be also the possible sources to the PCNs pollution in this study area. However, the sources of PCNs pollution are more complex, which need a further study to determine the source of PCNs in surface soil samples from the South of Jiangsu accurately.
薛令楠, 张琳利, 张利飞, 史双昕, 董亮, 李晓秀. 苏南地区表层土壤中多氯萘的浓度及来源[J]. 中国环境科学, 2017, 37(2): 646-653.
XUE Ling-nan, ZHANG Lin-li, ZHANG Li-fei, SHI Shuang-xin, DONG Liang, LI Xiao-xiu. Concentration and source of polychlorinated naphthalenes in surface soils from the South of Jiangsu. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(2): 646-653.
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