Occurrence, distribution and possible sources of organochlorine pesticides in agricultural soil of Shanghai, China
Occurrence, distribution and possible sources of organochlorine pesticides in agricultural soil of Shanghai, China
复制标题
上海农田土壤中有机氯农药的赋存、分布及可能来源
DOI：
10.1016/j.jhazmat.2009.05.082
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发表时间：
2009-10-30
影响因子：
13.6
通讯作者：
Fu, Jia-Mo
中科院分区：
文献类型：
--
作者：
Jiang, Yu-Feng;Wang, Xue-Tong;Fu, Jia-Mo
采集上海市农业土壤表层土壤样品，分析了24种有机氯农药（OCPs）的含量。六氯环己烷的浓度范围为nd-10.38 ng g（-1）（甲型六氯环己烷、乙型六氯环己烷、γ-六氯环己烷和δ-六氯环己烷的总和），滴滴涕为0.77-247.45纳克/克（-1）（p，p '-DDT、p，p'-DDD、p，p '-DDE和o，p'-DDT的总和），CHL为0.84-10.08 ng g（-1）（七氯、七氯环氧化物、顺式氯草胺、反式氯草胺和反式九氯的总和），nd-3.68 ng g（-1），硫丹（甲型硫丹和乙型硫丹的总和），六氯苯为0.10-3.62纳克/克（-1），其他有机氯农药为nd-5.69纳克/克（-1）（艾氏剂、狄氏剂和异狄氏剂的总和）。OCPs的总浓度范围为3.16 ~ 265.24 ng g（-1），主要污染区分布在上海市南部地区（包括奉贤区、南汇区和金山区）。从检测浓度和检出频率来看，HCHs、DDTs、HCB和环氧七氯是24种有机氯农药中最主要的化合物。DDT、HCH、氯丹和硫丹的不同组成表明，这些化合物在大多数土壤样品中的残留来源于历史应用，除了在一些采样点最近略有引入。相关性分析表明TOC与OCPs之间无显著相关性。有机氯农药对上海市农业土壤质量的评价结果为轻度污染。(C)2009 Elsevier B. V.保留所有权利。
Surface soil samples from agricultural soil of Shanghai were collected and analyzed for 24 organochlorine pesticides (OCPs). The concentrations were in the ranges of nd-10.38 ng g(-1) for HCHs (sum of alpha-, beta-, gamma- and delta-HCH), 0.77-247.45 ng g(-1) for DDTs (sum of p,p'-DDT, p,p'-DDD, p,p'-DDE, and o,p'-DDT), 0.84-10.08 ng g(-1) for CHLs (sum of heptachlor, heptachlor epoxide, cis-chlordane, trans-chlordane, and trans-nonachlor), nd-3.68 ng g(-1) for endosulfan (sum of alpha- and beta-endosulfan), 0.10-3.62 ng g(-1) for HCB and nd-5.69 ng g(-1) for other OCPs (sum of aldrin, dieldrin and endrin). The total OCPs concentrations ranged from 3.16 to 265.24 ng g(-1) and the main contaminated areas were distributed in the south regions of Shanghai (including Fengxian, Nanhui and Jinshan districts). According to the measured concentrations and detection frequencies, HCHs, DDTs, HCB and heptachlor epoxide were the most dominant compounds among the 24 OCPs. The different compositions of DDT, HCH, chlordane and endosulfan indicated that the residues of these compounds in most soil samples originated from historical application, besides slight recent introduction at some sampling locations. The correlation analysis showed no significant relationship between TOC and OCPs. The quality of Shanghai agricultural soil was classified as low pollution by OCPs. (C) 2009 Elsevier B.V. All rights reserved.