Organochlorine pesticides and polychlorinated biphenyls in soil and water samples in the Northeastern part of São Paulo State, Brazil.
Organochlorine pesticides and polychlorinated biphenyls in soil and water samples in the Northeastern part of São Paulo State, Brazil.
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DOI：
10.1016/j.chemosphere.2006.07.011
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发表时间：
2006-12
期刊：
影响因子：
8.8
通讯作者：
S. R. Rissato;M. S. Galhiane;V. Ximenes;Rita M B de Andrade;J. L. B. Talamoni;M. Libânio;M. V. de Almeida;B. Apon;A. A. Cavalari-A.
中科院分区：
文献类型：
--
作者：
S. R. Rissato;M. S. Galhiane;V. Ximenes;Rita M B de Andrade;J. L. B. Talamoni;M. Libânio;M. V. de Almeida;B. Apon;A. A. Cavalari-A.
东北地区土壤和地表水中有机氯农药(OCPs)、六氯环己烷(HCH)异构体(HCHs)、二氯二苯基三氯乙烷(DDT)及其代谢物(DDTs)和多氯联苯(PCBs)同系物等持久性有机污染物(POPs)的详细分析 巴西圣保罗允许对污染状况、分布和可能的污染源进行评估。农药和多氯联苯表现出明显不同的分布，反映了每个研究区域不同的农业、家庭和工业用途。土壤样品中六氯环己烷、滴滴涕和多氯联苯的浓度范围分别为0.05–0.92、0.12–11.01、0.02–0.25ngg−1干重，地表水样品中的浓度范围分别为0.02–0.6、0.02–0.58和0.02–0.5ngl−1。区域 2 的 DDT 和 PCB 水平总体升高，该区域非常靠近熔化、汽车电池工业和农业实践区域。 DDT 代谢物与 DDT 异构体的高比例表明最近在该环境中使用了 DDT。污染源与人类活动密切相关，例如家庭和工业排放、街道径流、农业杀虫剂以及森林砍伐和大气输送造成的土壤侵蚀。
Detailed analyses of persistent organic pollutants (POPs) such as organochlorine pesticides (OCPs), hexachlorocyclohexane (HCH) isomers (HCHs), dichlorodiphenyltrichloro ethane (DDT) and its metabolites (DDTs) and congeners of polychlorinated biphenyls (PCBs) in soil and surface water from the northeastern São Paulo, Brazil allowed the evaluation of the contamination status, distribution and possible pollution sources. The pesticides and PCBs demonstrated markedly different distributions, reflecting different agricultural, domestic and industrial usage in each region studied. The ranges of HCH, DDT, and PCBs concentrations in the soil samples were 0.05–0.92, 0.12–11.01, 0.02–0.25ngg−1dry wt, respectively, and in the surface water samples were 0.02–0.6, 0.02–0.58 and 0.02–0.5ngl−1, respectively. Overall elevated levels of DDT and PCB were recorded in region 2, a site very close to melting, automotive batteries industries, and agricultural practice regions. High ratios of metabolites of DDT to DDT isomers revealed the recent use of DDT in this environment. The sources of contamination are closely related to human activities, such as domestic and industrial discharge, street runoff, agricultural pesticides and soil erosion, due to deforestation as well as atmospheric transport.