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

所屬欄目:農藥及中間體

氯溴蟲(chóng)腈在土壤中的降解與遷移研究
聶思橋1,2,楊仁斌3* (1. 湖南化工研究院有限公司 國家農藥創(chuàng )制工程技術(shù)研究中心,湖南 長(cháng)沙 410014;2. 農用化學(xué)品湖南省重點(diǎn)實(shí)驗室,湖南 長(cháng)沙 410014;3. 湖南農業(yè)大學(xué),湖南 長(cháng)沙 410128)
摘 要:為了解氯溴蟲(chóng)腈在土壤中的轉化歸趨,開(kāi)展了其在土壤中的降解、吸附、遷移等環(huán)境行為研究。結果表明:氯溴蟲(chóng)腈在東北黑土、北京黃棕土、山西棕土中的降解半衰期分別為19.8 d、24.8 d和21.0 d,屬于易降解農藥。氯溴蟲(chóng)腈在3種土壤中的吸附規律符合Freundlich吸附等溫線(xiàn)方程,有機碳吸附常數(Koc)均大于20 000。氯溴蟲(chóng)腈東北黑土和北京黃棕土中的Rf值分別為0.125和0.25,在山西棕土中山西棕土的Rf值為0.5。氯溴蟲(chóng)腈在北京黃棕土和東北黑土中表現為易土壤吸附,不易移動(dòng),在山西棕土中表現為易土壤吸附,中等移動(dòng)。
關(guān)鍵詞:氯溴蟲(chóng)腈;土壤;環(huán)境行為;移動(dòng)性;吸附性;降解性
中圖分類(lèi)號:S482.3  文獻標識碼:B  文章編號: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
基金項目:國家自然科學(xué)基金(21572050)。
作者簡(jiǎn)介: 聶思橋(1972-),男,江西高安人,副研究員,碩士研究生,研究方向:農藥殘留及環(huán)境行為(E-mail:niesiqiao@126.com)。
聯(lián) 系 人:楊仁斌,教授,研究方向:農藥殘留及環(huán)境行為(E-mail:yrb4806@163.com)。
收稿日期:2016-05-10
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