Study on the Residue dynamics of mesosulfuron-methyl in wheat and soil | 甲基二磺隆在小麦和土壤中的残留动态研究
2009
Zhang Shaojun, Hebei University, Baoding(China)，College of Pharmacy | Yang Gengliang, Hebei University, Baoding(China)，College of Pharmacy | Zheng Zhenshan, Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang(China)，Institute of Genetics and Physiolgy
Chinese. 本试验研究了除草剂阔世玛的有效成分之一甲基二磺隆在河北、湖北两地小麦和土壤中的残留规律。采用液相色谱紫外检测法测定甲基二磺隆残留量，麦粒、植株中的最低检出浓度为0.01 mg/kg，土壤中为0.004mg/kg。添加浓度在0.004-0.5 mg/kg范围内，回收率83%-101%，变异系数4.6%-17%。实验结果显示，甲基二磺隆在两地小麦植株中的半衰期分别为6.42 d和8.32 d，在土壤中的分别为10.7 d和9.47 d；研究表明，阔世玛可分散粒剂用于冬小麦田防治1年生禾本科杂草及阔叶杂草，有效成分剂量应定在8.1-13.5 g/hm. ，施药1次，收获期甲基二磺隆在两地小麦植株、籽粒及麦田土壤中的最终残留量均低于0.02 mg/kg。[著者文摘]
Show more [+] Less [-]English. Field trials were conducted to study the dynamics and final state of residues of mesosulfuron-methyl which was one of the active ingredients in herbicide Atlantis in wheat and soil in Hebei and Hubei of China. Liquid chromatography with UV detection was used to determine mesosulfuron-methyl residue. Limit of determination were 0.01 mg/kg in wheat grain and plant, and 0.004 mg/kg in soil. The recoveries were 83%- 101% and coefficient of variations were 4.6 %-17 % between the concentration of 0. 004- 0.5 mg/kg. The results indicated that the half lives of mesosulfuron-methyl in wheat plant were 6.42 and 8.32 d in Hebei and Hubei, and the half lives in soil were 10.7 and 9.47 d. According to the research, when Atlantis 3.6% wettable dispersible granule being used one time to control the weeds in winter wheat fields with the doseages of active ingredient of 8.1-13.5 g/hm. , the final residues of mesosulfuron-methyl in grain, plant and soil of wheat were not more than 0.02 mg/kg.
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