气质联用色谱法检测粮谷中五种除草剂的残留  

Simultaneous Determination of Five Herbicide Residues in Cereal Grains by GC/MS with Solid-Phase Extraction

作　　者：刘波静[1] 

机构地区：[1]浙江大学饲料科学研究所教育部"动物分子营养学"重点实验室农业部和浙江省"饲料与动物营养"重点实验室,杭州310020

出　　处：《中国粮油学报》2008年第1期185-188,共4页Journal of the Chinese Cereals and Oils Association

摘　　要：探讨了粮谷中2，4，5-三氯苯氧基乙酸（2，4，5-涕）、二氯喹啉酸（快杀稗）、3-异丙基-（1H）-苯并-2，1，3-噻二嗪-4-酮-2，2-二氧化物（灭草松）、3—6-二氯-2甲样机苯甲酸（麦草威）、2-甲基氯苯氧乙酸（2甲4氯）5种酸性除草剂的残留量的测定方法。采用溶剂加速萃取技术（ASE）和CLNpakEV-2000柱和CLNoakEV—G柱对样品进行凝胶渗透萃取、净化，并用DB-5MS（30m×0．25mm×0．25μm）柱，以GC—MSD—SIM方式进行分析，5种除草剂的在0．01～0．50μg／g添加范围内的回收率为92．59％～101．16％，相对标准偏差为0．6％～4．2％，检出限为0．01～0．02μg／g，该方法完全能满足残留检测要求。To determine the herbicide residues, includng 2,4,5 - T, Dicamba, MCPA, Bentazone, and Quinclorac in cereal grains, the herbicides in grain samples were extracted by accelerating solvent extraction （ASE） with columns CLNpak EV- 2000 and CLNpak EV- G., and the separation was performed on a DB- 5MS column （30m× 0.25 mm× 0.25 μm） with GC - MS- SIM for the detection. The analysis results show that the herbicide recoveries from the grain samples spiked with the five herbicides at level range of 0.01 - 0.50μg/g are from 92.59% to 101.16%, with relative standard deviations from 0.6% to 4.2%, and the detection limits are 0.01 - 0.02 μg/g. It is indicated that the method can well meet the requirements for simultaneous determination of the herbicides in cereal grains.

关 键 词：固相萃取 气质联用色谱法 除草剂 残留分析 粮谷 

分 类 号：TS827[轻工技术与工程] TQ450.2[化学工程—农药化工]