摘要
2007年3月采用网格布点法采集55个上海市城区表层土壤样品,采用气相色谱法对土壤中的有机氯农药(OCPs)残留进行了分析,揭示了上海城区土壤中有机氯农药的残留水平、分布及来源.结果表明,试区土壤中六六六(HCHs)、滴滴涕(DDTs)和六氯苯均有较高的检出率,在95%~100%之间,残留含量范围分别为nd^38.58μg.kg-1、1.81~79.61μg.kg-1和0.16~40.25μg.kg-1.研究区域内土壤有机氯农药总残留范围在3.12~91.07μg.kg-1,平均值为22.33μg.kg-1.OCPs主要残留物为p,p′-DDE,占残留总量的60%以上.有机氯农药残留相对较高的采样点分布在公园及绿化带.有机氯农药组成特征表明土壤中有机氯农药残留主要来源于历史使用.与国内同类研究相比较,试区土壤中有机氯农药的残留较低;与国外比较,试区土壤中有机氯农药残留量明显低于德国、阿根廷和波兰土壤中有机氯农药的残留水平。
The 55 soil samples were collected from Shanghai urban areas in March 2007. The residues and distribution characteristics of organochlorine pesticides （OCPs） in the soil samples were investigated with gas chromatography. The results showed that HCHs, DDTs, and HCB were in the ranges of nd-38.58 μg·kg^-1, 1.81-79.61μg·kg^-1 and 0. 16-40. 25 μg·kg^-1 , respectively. The total OCPs concentrations in urban soil of Shanghai ranged from 3. 12 μg·kg^-1to 91.07 μg·kg^-1 with a mean of 22.33 μg·kg^-1 , and the p,p＇-DDE took over 60% of the total OCPs. The main contaminated areas were distributed in the park and greenbehs. The composition of OCPs indicated that OCPs in soil samples mainly came from historical application. Compared to the reference data, the pollution burden in soil of Shanghai was lower than those in other areas of China and in German, Argentina and Poland.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2010年第2期409-414,共6页
Environmental Science
基金
国家自然科学基金重点项目(40830744)
国家科技支撑计划项目(2008BAC32B03)
上海市重点学科项目(S30109)
关键词
土壤
有机氯农药
滴滴涕
六六六
六氯苯
soil
organochlorine pesticides （OCPs）
DDTs
HCHs
hexachlorobenzene （ HCB ）
