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建立小麦和土壤样品中2甲4氯异辛酯残留的气相色谱-质谱检测方法。对小麦植株、小麦籽粒和土壤中的2甲4氯异辛酯经丙酮溶液匀浆提取,浓缩,丙酮定容后,用GC-MS测定。研究结果表明,小麦植株、籽粒和土壤中2甲4氯异辛酯的最低检出限均为0.02 mg/kg,在添加水平为0.02～0.5 mg/kg时,2甲4氯异辛酯在小麦植株中的回收率为91.2%～104.2%(RSD=4.2%～13.4%),在籽粒中的回收率为85.0%～104.2%(RSD=3.6%～10.9%),在土壤中的回收率为89.0%～100%(RSD=6.1%～9.7%)。表明该检测方法具有操作简单、灵敏度高等特点,完全能够满足小麦和土壤中2甲4氯异辛酯的残留检测。
Establishment of Gas Chromatography - Mass Spectrometry for the Determination of Dimethylchlorooctyl Ester Residues in Wheat and Soil Samples. 2 A 4 chloro isooctyl ester in wheat plants, wheat seeds and soil were homogenized by acetone solution, concentrated, and fixed in acetone. The content was determined by GC-MS. The results showed that the detection limits of 2-MCPD in wheat plants, grain and soil were 0.02 mg / kg. At the added level of 0.02-0.5 mg / kg, The recoveries of wheat plants ranged from 91.2% to 104.2% (RSD = 4.2% ~ 13.4%), and the recovery rates in wheat kernels ranged from 85.0% to 104.2% (RSD = 3.6% -10.9% Was 89.0% ~ 100% (RSD = 6.1% ~ 9.7%). The results show that the method is simple and sensitive, and can fully meet the residues detection of 2-chloro-4-chlorooctyl-ester in wheat and soil.