Concentrations and classification of HCHs and DDTs in soil from the lower reaches of the Jiulong River, China

Soil is an important source to other environ- mental media and organisms for organochlorine pesticides (OCPs) bioaccumulation. Twenty-four representative sur- face soil samples were collected from the lower reaches of the Jiulong River, China, in 2009. The concentrations of hexachlorocyclohexane iso...

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Veröffentlicht in:Frontiers of environmental science & engineering 2012-04, Vol.6 (2), p.177-183
Hauptverfasser: Zhang, Jiaquan, Qi, Shihua, Xing, Xinli, Tan, Lingzhi, Chen, Wei, Hu, Ying, Yang, Dan, Wu, Chenxi
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container_title Frontiers of environmental science & engineering
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Qi, Shihua
Xing, Xinli
Tan, Lingzhi
Chen, Wei
Hu, Ying
Yang, Dan
Wu, Chenxi
description Soil is an important source to other environ- mental media and organisms for organochlorine pesticides (OCPs) bioaccumulation. Twenty-four representative sur- face 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~, with a mean value of 9.51 ng.g-~. The concentrations of dichlorodiphenyltrichloroethanes (DDTs) and their metabolites were within the ranges of 0.94-700.99 ng. gl, 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-a) of the Chinese Environmental Quality Standard (GB 15618-1995). Hier- archical 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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Environ. Sci. Eng</addtitle><addtitle>Frontiers of Environmental Science & Engineering in China</addtitle><description>Soil is an important source to other environ- mental media and organisms for organochlorine pesticides (OCPs) bioaccumulation. Twenty-four representative sur- face 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~, with a mean value of 9.51 ng.g-~. The concentrations of dichlorodiphenyltrichloroethanes (DDTs) and their metabolites were within the ranges of 0.94-700.99 ng. gl, 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-a) of the Chinese Environmental Quality Standard (GB 15618-1995). 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The concentrations of HCHs and DDTs in the soil were lower than the first grade level (50 ng. g-a) of the Chinese Environmental Quality Standard (GB 15618-1995). Hier- archical 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.</abstract><cop>Heidelberg</cop><pub>Springer-Verlag</pub><doi>10.1007/s11783-011-0354-y</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record>
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subjects Analysis
Bioaccumulation
Bivariate analysis
bivariateCorrelations
carbon
classification
classification,Hierarchical
Cluster
Cluster analysis
Contaminants
Contamination
Correlation
DDT
DDT (pesticide)
dichlorodiphenyltrichloroethan
Earth and Environmental Science
Environment
environmental fate
Environmental quality
HCA
HCH (pesticide)
Hexachlorocyclohexane
hexachlorocyclohexane (HCH) and dichlorodiphenyltrichloroethan (DDT)
Hierarchical Cluster Analysis (HCA)
Isomers
Jiulong
Jiulong River
Metabolites
Organic carbon
Organic compounds
Organochlorine pesticides
PCA
Pearson's bivariate Correlations Analysis (PCA)
Pearson's
Pesticides
Quality standards
Research Article
River
Rivers
soil
Soil contamination
soil pollution
soil sampling
Soil surfaces
Total organic carbon
(HCH)and
title Concentrations and classification of HCHs and DDTs in soil from the lower reaches of the Jiulong River, China
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