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篇目详细内容 |
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【篇名】 |
Concentrations and classification of HCHs and DDTs in soil from the lower reaches of the Jiulong River, China |
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【刊名】 |
Frontiers of Environmental Science and Engineering |
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【刊名缩写】 |
Front.Environ.Sci.Eng. |
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【ISSN】 |
2095-2201 |
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【EISSN】 |
2095-221X |
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【DOI】 |
10.1007/s11783-011-0354-y |
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【出版社】 |
Higher Education Press and Springer-Verlag Berlin
Heidelberg |
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【出版年】 |
2012 |
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【卷期】 |
6
卷2期 |
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【页码】 |
177-183
页,共
7
页 |
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【作者】 |
Jiaquan ZHANG;
Shihua QI;
Xinli XING;
Lingzhi TAN;
Wei CHEN;
Ying HU;
Dan YANG;
Chenxi WU;
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【关键词】 |
Jiulong River; hexachlorocyclohexane (HCH) and dichlorodiphenyltrichloroethan (DDT); classification; Hierarchical Cluster Analysis (HCA); Pearson’s bivariate Correlations Analysis (PCA) |
【摘要】 |
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Soil is an important source to other environmental media and organisms for organochlorine pesticides (OCPs) bioaccumulation. Twenty-four representative surface soil samples were collected from the lower reaches of the Jiulong River, China, in 2009. The concentrations of hexachlorocyclohexane isomers (HCHs) ranged from 0.38 to 39.52？ng·g？1, with a mean value of 9.51？ng·g？1. The concentrations of dichlorodiphenyltrichloroethanes (DDTs) and their metabolites were within the ranges of 0.94–700.99？ng·g？1, with a mean value of 71.17？ng·g？1. The concentrations of HCHs and DDTs in the soil were lower than the first grade level (50？ng·g？1) of the Chinese Environmental Quality Standard (GB15618-1995). Hierarchical Cluster Analysis (HCA) and Pearson’s bivariate Correlations Analysis (PCA) were used to analyse the distribution and contamination levels of OCPs in this region. The results showed that DDTs were the major contaminants and there were no significant correlations between various OCPs concentrations and the total organic carbon (TOC) contents. A significant positive correlation was observed between HCHs and DDTs (p<0.01), which indicates that HCHs and DDTs may have similar sources and fate in the study area. |
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