中国生态农业学报2011，Vol.19Issue(2)：399-402,4.DOI:10.3724/SP.J.1011.2011.00399
滇池周边大棚土壤中六六六和滴滴涕残留特征
Residue characteristics of HCHs and DDTs in greenhouse soils in Dianchi Lake Distract
摘要
Abstract
The characteristics of organo-chlorine pesticides (OCPs) were studied under greenhouse soil conditions.In the study,hexachlorocyclohexane (HCHs) and dichlorodiphenyl trichloroethane (DDTs) OCPs were analyzed using gas chromatography equipped with ECD detector.Soil samples were collected from 0, 1～5, 5～10, 10～15 and 15～25 years-old greenhouses at 0～20 cm,20～40 cm and 40～60 cm soil profiles.Based on the study, mean HCHs and DDTs residue significantly increased in soil of greenhouses older than 10 years.HCHs and DDTs residues were not significantly different in 0～10 years-old greenhouse soils.DDTs were main component of OCPs residue.The trend in HCHs residue variation was not significantly different in different soil layers.However, DDTs concentration in the 0～20 cm surface soil was significantly higher than that in other soil layers.β-HCH concentration was higher than other HCH isomers in greenhouse soils.This suggested that the source of soil HCHs was residue of past applications.p,p'-DDT/(DDD+DDE) value in some soil samples was greater than one, suggesting that new DDTs were input in some of the greenhouses.关键词
滇池/大棚/六六六/滴滴涕/残留/种植年限/土层Key words
Dianchi/ Greenhouse/ HCHs/ DDTs/ Residue/ Cultivation years/ Soil layer分类
资源环境引用本文复制引用
尹可锁,张雪燕,徐汉虹,吴文伟,代雪芳,毛佳,洪丽芳..滇池周边大棚土壤中六六六和滴滴涕残留特征[J].中国生态农业学报,2011,19(2):399-402,4.基金项目
国家"十一五"科技支撑计划项目(2007BAD87B12)和云南省"十一五"科技攻关项目(2006NG18)资助 （2007BAD87B12）
