气质联用法检测麦田中的噻虫嗪和高效氯氟氰菊酯残留  

Determination of Thiamethoxam and lambda-Cyhalothrin Residue in Wheat Field by GC-MS/MS

作　　者：陈国峰[1,2] 刘峰[1] 张晓波[1] 陶波[2] 

机构地区：[1]黑龙江省农业科学院农产品质量安全研究所,农业部农产品质量安全风险评估实验站(哈尔滨),哈尔滨150086 [2]东北农业大学农学院,哈尔滨150030

出　　处：《现代农药》2015年第5期39-41,共3页MODERN AGROCHEMICALS

基　　金：蔬菜禁限用农药使用调查与农药多残留安全性评估(GJFP201500101)

摘　　要：建立了噻虫嗪和高效氯氟氰菊酯残留量的气相色谱一串联质谱同时分析方法。小麦、植株和土壤样品经乙腈提取，弗罗里硅土固相萃取小柱净化，采用气相色谱一串联质谱同时分析噻虫嗪和高效氯氟氰菊酯。结果表明：噻虫嗪和高效氯氟氰菊酯在0．05～20mg/L范围内线性良好，相关系数分别为0．9970和0．9980。在添加浓度为0．05～20．00mg／kg时，噻虫嗪在小麦、植株和土壤中的平均加标回收率分别为84．0％～101．6％、76.3％～92．1％和81．2％～93．0％，相对标准偏差分别为1．6％～13．2％、10．7％～13．9％和3。5％～8．2％；高效氯氟氰菊酯在小麦、植株和土壤中的平均加标回收率分别为82．2％～108．8％、78．2％～86．1％和82．1％～91．1％，相对标准偏差分别为3．1％～9．7％、6．8％～10．0％和O．8％～7．8％。A method for the simultaneous determination of thiamethoxam and lambda-cyhalothrin was established.Sample was extracted with acetonitrile and cleaned up on Florisil SPE column, then determined by GC-MS/MS. The results showed that the linear relations of thiamethoxam and lambda-cyhalothrin were good with the linear relative coefficients of0.997 0 and 0.998 0 in the range of 0.05-20 mg/L. The fortified recoveries of thiamethoxam in wheat, wheat plant and soil were 84.0%-101.6%, 76.3%-92.1% and 81.2%-93.0%, the relative standard deviations were 1.6%-13.2%, 10.7%-13.9%and 3.5%-8.2%. The fortified recoveries of lambda-cyhalothrin in wheat, wheat plant and soil were 82.2%-108.8%, 78.2%-86.1% and 82.1%-91.1%, and the relative standard deviations were 3.1%-9.7%, 6.8%-10.0% and 0.8%-7.8%.

关 键 词：噻虫嗪 高效氯氟氰菊酯 气相色谱串联质谱 残留 

分 类 号：O657.63[理学—分析化学] TQ450.263[理学—化学]