四川环境2012，Vol.31Issue(5)：16-20,5.
苄嘧磺隆和芘在土壤中的吸附解吸行为
Sorption-desorption Behavior of Bensulfuron-methyl and Pyrene in Soil
唐东民 1伍钧2
作者信息
- 1. 眉山市环境监测中心,四川眉山620010 l~Jll农业大学资源环境学院,成都611130
- 2. l~Jll农业大学资源环境学院,成都611130
- 折叠
摘要
Abstract
Adsorption is the initial process when the exterior organic pollutants enter the soil, which influences directly the bioavailability of organics in soil The sorption-desorption behavior and its kinetics of Bensulfuron-methyl ( BSM ) and Pyrene (PYR) in soil as well as the isothermal sorption and desorption behavior were studied using completely mixing method. The results showed that : ( 1 ) the sorption-desorption kinetics of BSM and PYR in soil included two phases, a speed reaction phase initially and a slow reaction phase followed. The kinetics showed that the testing organics could reach the sorption-desorption equilibrium in eight hours. (2) Within the testing concentration range, the linear equation described well the sorption-desorption behavior of BSM and PYR in soil (3) There was a phenomenon of desorption delaying for BSM and PYR in soil, the sorpfion is not a complete reversible process of desorption. The existence of irreversible sorption room in soil was the major cause of desorption delaying.关键词
苄嘧磺隆/芘/土壤/吸附/解吸Key words
Bensulfuron-methyl/Pyrene/soil/sorption/desorption分类
资源环境引用本文复制引用
唐东民,伍钧..苄嘧磺隆和芘在土壤中的吸附解吸行为[J].四川环境,2012,31(5):16-20,5.
