本文报导苹果与土壤中残留有机锡杀螨剂倍乐霸,即三唑环(?)及其代谢物三环羟基锡和二环氧化锡的分析方法。该方法是将上述三种残留化合物,用HBr(?)化、丙酮提取、石油醚液-液分配,并经甲基化生成相应的四烷基锡化合物,再用GC-FPD进(?)行定。残留量在1ppm级范围内,方法的回收率为80％,检测下限为0.01ppm。 This paper reports the analysis method of trimethoproxine and its metabolites tricyclohexyl tin and dicyclohexylane in apple and soil. The method comprises the following steps of: HBr (?), Acetone extraction, petroleum ether liquid-liquid partitioning and the methylation of the above three residual compounds to form corresponding tetraalkyltin compounds, OK. The residual amount is in the range of 1 ppm, the recovery rate of the method is 80%, and the lower limit of detection is 0.01 ppm.