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当前位置: 首页 > 文章 > 75%氯吡嘧磺隆水分散粒剂在玉米及土壤中的消解动态与残留 农药 2011,50 (12) 51-53
Position: Home > Articles > Residue Decline of Halosulfuron-methyl 75% WG in Corn and Soil Agrochemicals 2011,50 (12) 51-53

75%氯吡嘧磺隆水分散粒剂在玉米及土壤中的消解动态与残留

作  者：
钟红舰;刘进玺;吴绪金;董小海;蔡敏
单  位：
农业部农产品质量监督检验测试中心(郑州)
关键词：
氯吡嘧磺隆;玉米;土壤;消解动态;农药残留
摘  要：
[目的]评价氯吡嘧磺隆在玉米上使用的安全性,建立其使用规范。[方法]于2009—2010年在南京和郑州两地进行了75%氯吡嘧磺隆水分散粒剂在玉米和土壤中的消解动态和最终残留试验。样品用丙酮提取,乙酸乙酯萃取净化后,用超高效液相色谱-电喷雾串联四极杆质谱检测,外标法定量。[结果]消解动态试验结果表明:在植株和土壤中半衰期分别为0.78~0.97、7.00~16.90 d。最终残留试验表明:75%氯吡嘧磺隆按推荐剂量(45 g a.i./hm2)和推荐剂量的1.5倍(67.5 g a.i./hm2)施药,玉米苗后3~5叶期施药1次,玉米收获期采样,检测的玉米籽粒、玉米植株及土壤中氯吡嘧磺隆的残留量均低于0.1 mg/kg。[结论]拟推荐我国氯吡嘧磺隆在玉米和玉米秸秆上的最大残留限量为0.1 mg/kg。
译  名：
Residue Decline of Halosulfuron-methyl 75% WG in Corn and Soil
作  者：
ZHONG Hong-jian,LIU Jin-xi,WU xu-jin,DONG Xiao-hai,CAI Min(Zhengzhou center of inspection and testing for agricultural products,ministry of Agriculture,Zhengzhou 450002,china)
关键词：
halosulfuron-methyl;corn;soil;degradation dynamics;pesticide residue
摘  要：
It was to evaluate the safety and establish the regular use of halosulfuron-methyl in corn field.[Methods] The field trail for halosulfuron-methyl 75% WG were conducted in corn and soil in Nanjing and Zhengzhou between year 2009-2010.Samples were extracted by acetone and purified by ethyl acetate,detected by ultra performance liquid chromatography-electrospray tandem mass spectrometry(UPLC-MS/MS),and quantified by external standard method.[Results] The results from field experiment of degradation dynamic indicated that the half-lives of halosulfuron-methyl in corn plant and soil were 0.78-0.97,7.00-16.90 d,respectively.The final residue indicated that when the corn plant was sprayed once in postemergence with halosulfuron-methyl 75% WG at the recommended dosage 45 g a.i./ha and 1.5 times of the recommended dosage(67.5 g a.i./ha),and sample was taken when harvested.The total residue of halosulfuron-methyl in corn seed,plant and soil were less than 0.1 mg/kg.[Conclusions] The recommended MRL for halosulfuron-methyl in corn and corn plant was 0.1 mg/kg in China.

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