第 46 卷第 5 期Vol. 46 No. 5
2016 年 10 月Oct 2016

所属栏目:农药及中间体

氯溴虫腈在土壤中的降解与迁移研究
聂思桥1,2,杨仁斌3* (1. 湖南化工研究院有限公司 国家农药创制工程技术研究中心,湖南 长沙 410014;2. 农用化学品湖南省重点实验室,湖南 长沙 410014;3. 湖南农业大学,湖南 长沙 410128)
摘 要:为了解氯溴虫腈在土壤中的转化归趋,开展了其在土壤中的降解、吸附、迁移等环境行为研究。结果表明:氯溴虫腈在东北黑土、北京黄棕土、山西棕土中的降解半衰期分别为19.8 d、24.8 d和21.0 d,属于易降解农药。氯溴虫腈在3种土壤中的吸附规律符合Freundlich吸附等温线方程,有机碳吸附常数(Koc)均大于20 000。氯溴虫腈东北黑土和北京黄棕土中的Rf值分别为0.125和0.25,在山西棕土中山西棕土的Rf值为0.5。氯溴虫腈在北京黄棕土和东北黑土中表现为易土壤吸附,不易移动,在山西棕土中表现为易土壤吸附,中等移动。
关键词:氯溴虫腈;土壤;环境行为;移动性;吸附性;降解性
中图分类号:S482.3  文献标识码:B  文章编号:1009-9212(2016)05-0011-04
Study on Environmental Behaviors of Brochlorfenapyr in Soil
NIE Si-qiao1,2, YANG Ren-bin3* (1. National Engineering Center for Agrochemicals, Hunan Research Institute of Chemical Industry, Changsha 410014, China; 2. Hunan Province Key Laboratory for Agrochemicals, Changsha 410014, China; 3. Hunan Agricultural University, Changsha 410128, China)
Abstract:The degradation, adsorption and mobility of brochlorfenapyr in different soils were studied. The results showed that the degradation half-lives of brochlorfenapyr were 19.8 d, 24.8 d and 21.0 d in black soil of northeast, yellow-brown soil of beijing and brown soil of shanxi respectively. the sorption isotherm could be well described by Freundlich equation. Adsorption coefficient(KOC) of brochlorfenapyr on three kinds of soils were more than 20 000. The value of Rf were 0.125, 0.25 and 0.5 respectively. The results of adsorption and mobility of brochlorfenapyr display easy-adsorption and difficult-mobile in black soil of northeast and yellow-brown soil of Beijing, easy-adsorption and mid-mobile in brown soil of shanxi.
Key words:brochlorfenapyr; soil; environmental behavior; mobility; absorption; degradation
基金项目:国家自然科学基金(21572050)。
作者简介: 聂思桥(1972-),男,江西高安人,副研究员,硕士研究生,研究方向:农药残留及环境行为(E-mail:niesiqiao@126.com)。
联 系 人:杨仁斌,教授,研究方向:农药残留及环境行为(E-mail:yrb4806@163.com)。
收稿日期:2016-05-10