棉隆及其代谢物异硫氰酸甲酯在番茄和土壤中残留分析方法  

Analytical Method of Dazomet and Its Metabolite Methyl-Isothiocyanate Residue in Tomato and Soil

作　　者：冯义志[1] 刘钰[1] 刘伟[1] 

机构地区：[1]山东省农药研究所山东省化学农药重点实验室,济南250033

出　　处：《农药》2013年第5期366-368,共3页Agrochemicals

摘　　要：目的]建立棉隆及其代谢物异硫氰酸甲酯在番茄和土壤中的残留分析方法。[方法]样品经提取、净化后,分别采用DAD检测器和质谱检测器检测。[结果]添加质量分数为0.02-1 mg/kg时,棉隆在番茄和土壤中平均添加回收率分别为75.4%-95.8%和75.3%-90.3%,相对标准偏差分别为1.6%-7.5%和2.0%-6.0%。添加质量分数为0.02-1 mg/kg时,异硫氰酸甲酯在番茄和土壤中平均添加回收率分别为87.5%-91.9%和92.1%-94.7%,相对标准偏差分别为3.9%-9.2%和4.6%-6．5％。棉隆和异硫氰酸甲酯在番茄中的最低检出质量分数都为0．02mg／kg。[结论]该方法快速简便，准确可靠。[Aims] An analytical method for determining dazomet and its metabolite methyl-isothiocyanate in tomato and soil was developed. [Methods] The sample was extracted and purified, and detected by DAD and MS respectively. [Results] When spiked at 0.02-1 mg/kg, the average recoveries of dazomet in tomato and soil were 75.4-95.8% and 75.3- 90.3%, and the relative standard deviations were 1.6-7.5% and 2.0-6.0% respectively. When spiked at 0.02-1 mg/kg, the average recoveries of methyl-isothiocyanate in tomato and soil were 87.5-91.9% and 92.1-94.7%, with relative standard deviations of 3.9-9.2% and 4.6-6.5%, respectively. The limits of quantification of dazomet and methyl-isothiocyanate in tomato were 0.02 mg/kg. [Conclusions] The method was fast, simple, accurate and reliable.

关 键 词：棉隆 异硫氰酸甲酯 番茄 土壤 残留 

分 类 号：TQ450.2[化学工程—农药化工]