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本文对莫比朗3%乳油在烟草、土壤中的残留分析方法及消解情况进行了研究。试验采用甲醇提取,二氯甲烷萃取,层析柱净化的方法。回收率在82.59%～103.96%之间,标准偏差为2.01%～11.48%。试验结果表明,莫比朗在烟叶及土壤中消解率均较快。莫比朗在烟叶中半衰期为1.59d～1.65d,施药后10d消解率达90%以上;土壤中半衰期为0.88d～1.61d,施药后10d消解率达90%以上。最终残留试验中,按36g/hm2有效成分施药(常用药量的两倍),最后一次施药距采收15d时,烟叶中残留量在3.4mg/kg以下。建议在常量条件下施药后的安全间隔期为15d。
In this paper, 3% of Mobillang EC in tobacco, soil residue analysis and digestion were studied. Test using methanol extraction, dichloromethane extraction, column purification method. The recoveries ranged from 82.59% to 103.96% with standard deviations of 2.01% to 11.48%. The test results showed that Mobi Lang in tobacco leaf and soil digestion rate are faster. The half-life of Mobelang in tobacco leaves was 1.59d ~ 1.65d, and the digestion rate reached 90% after 10 days. The half-life in soil was 0.88d ~ 1.61d, and the digestion rate reached 90% after 10 days. The final residue test, according to the 36g / hm2 active ingredients (twice the amount of commonly used drugs), the last application from the harvest 15d, the residual amount of tobacco in 3.4mg / kg or less. It is recommended that the safety interval after application of pesticides under constant conditions be 15 days.