岩矿测试2016，Vol.35Issue(1)：75-81,7.DOI:10.15898/j.cnki.11-2131/td.2016.01.013
长三角部分地区土壤中22种有机氯农药的分布特征
Distribution CharaCteristiCs of 22 OrganoChlorine PestiCides in Soils from Some Areas of the Yangtze River Delta
摘要
Abstract
In order to evaluate the agricultural ecological environment risk caused by industrialization over a long period of time,the distribution characteristics of 22 organochlorine pesticide residues in the soils under different land use forms from four perpendicular profiles were analyzed using Gas Chromatography. Research results indicate that the mean concentrations of OCPs were in the order:vegetable land in industrial park(139. 87 ng / g)> waste land in industrial park(103. 1 ng / g)> vegetable land in agricultural areas(26. 27 ng / g)> paddy field in agricultural areas(2. 50 ng / g). DDTs and HCHs were still the primary pollutants of OCPs in the topsoils with DDTs concentrations of 0. 14 - 485. 73 ng / g(mean 44. 43 ng / g)and HCHs concentrations of 0. 69 - 66. 69 ng / g(mean 7. 73 ng / g). The ratio of(DDD + DDE)/ DDTs indicated that there was almost no new input of pollution in this area. The concentrations of DDTs and HCHs tend to decrease gradually with the increase in the depth of soil profile. This trend is related to the fact that the rock types of zone of aeration in profile soil are mainly clays and sub-clays,which reduce the vertical transfer dynamics of organochlorine pesticides induced by the overland runoff. This study provides some references to the control and improvement of pollution conditions in the region.关键词
长三角地区/土壤/有机氯农药/分布特征/气相色谱法Key words
Yangtze River delta/soils/organochlorine pesticides/distribution characteristics/Gas Chromatography分类
农业科技引用本文复制引用
时磊,孙艳艳,吕爱娟,蔡小虎,沈小明,沈加林..长三角部分地区土壤中22种有机氯农药的分布特征[J].岩矿测试,2016,35(1):75-81,7.基金项目
中国地质调查局地质调查工作项目(1212011120276) （1212011120276）
