作　　者： ; ; ; (陈泽鹏）;

机构地区： 广东省烟草公司广州510640

出　　处： 《农药》 2007年第7期479-480,483,共3页

摘　　要： 取受害烟区无用药的pH值为5.84的土样,分别添加二氯喹啉酸0.8mg/kg和1.6mg/kg,采用高效液相分析方法,测得180d内的二氯喹啉酸两种添加量的自然降解情况,经检测分析,当添加量为0.8mg/kg时,所测半衰期为23.30d。当添加量为1.6mg/kg时,所测半衰期为22.04d。180d后仍可以检测到0.069～0.085mg/kg的残留量,所求消解率为89.35%～95.78%。根据二氯喹啉酸在土壤中的消解动态,在稻田施用一次二氯喹啉酸后,种植烟草的安全间隔期为342d。 The residue of quinclorac in the soil of growing tobacco can causes the deformity of tobacco. By the analytic technique of HPLC, the half life was 23.30 days when mixed at dose of 0.8 mg/kg with soil of pH 5.84, and was 22.04 days at dose of 1.6 mg/kg. 180 Days after using the herbicide, the residue content of quinclorac in soil could reach at 0.069-0.085 mg/kg. The rate of degradation was 89.35-95.78%. Based on the result of degradation dynamic of quinclorac in soil, a conclusion could be drawn that the safety period of quinclorac is 342 days after applying the herbicide in acidulated soil.

关 键 词： 二氯喹啉酸 土壤残留 半衰期 消解动态

领　　域： [化学工程]