首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Distribution of atrazine in a crop-soil-groundwater system at Baiyangdian Lake area in China
Authors:Ye C M  Gong A J  Wang X J  Zheng H H  Lei Z F
Institution:Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. yechm@mail.rcees.ac.cn
Abstract:In this paper, the concentration distribution and environmental fate of atrazine in a crop soil groundwater system at Baiyangdian Lake area of North China were studied. The concentration of the herbicide in spatial and vertical soils, and in roots, stem, leaf, corncob and kernel of corn, and in groundwater were measured by HPLC. The results showed that the variation of spatial concentration of atrazine in soil can be described by first order kinetics equation which has a half life of 360 days and a rate constant of 0.0019d -1 . The vertical variation of atrazine concentration with soil depth follows the exponential decay law. After 120 days following atrazine application, the mass distributions of this herbicide in crop soil groundwater system are 71% in soil, 20% in groundwater and 1% in crop respectively, and 8% due to loss by degradation or often removal processes. The order of atrazine concentration in every part of corn crop is in roots>in corncob>in kernel of corn>in leaf.
Keywords:atrazine  soil  corn crop  groundwater  fate  Chin
本文献已被 CNKI 万方数据 PubMed 等数据库收录!
点击此处可从《环境科学学报(英文版)》浏览原始摘要信息
点击此处可从《环境科学学报(英文版)》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号