用气相色谱法分析测定芦笋中多种有机氯和拟除虫菊酯残留量  

Determination of Organochlorines and Pyrethroid Pesticides in Asparagus by Gas Chromatography

作　　者：肖利龙[1] 花锦 刘晓琳 

机构地区：[1]太原学院,山西太原030032 [2]山西出入境检验检疫局,山西太原030024

出　　处：《农产品加工（下）》2016年第7期42-44,共3页Farm Products Processing

摘　　要：建立了芦笋及其制品中9种有机氯类与5种拟除虫菊酯类农药残留的定性和定量分析方法。芦笋样品用乙酸乙酯一环己烷混合溶液（1＋1，V／V）提取，凝胶色谱净化，以弗罗里硅土小柱作为分离柱，经程序升温分离各组分，以峰面积外标法定量，能有效分离9种有机氯和5种拟除虫菊酯农药，消除基质干扰效果好。该法在0．01-0．10mg／L质量浓度范围内线性良好，相关系数R2均大于0．995，回收率为78．3％，103．5％，相对标准偏差为4．1％。7．3％。有机氯和拟除虫菊酯农药检出限分别为0．002mg／kg和0．005mg／kg。该方法灵敏度高、重现性好，适用于国内外对农药残留限量的检测要求，为芦笋的出口提供技术保障。Gas chromatography method of 9 kinds of organochlorines pesticides and 5 kinds of pyrethroid pesticides in asparagus and asparagus products are constituted. The samples of asparagus are extracted with ethyl acetate-cyclohexane solution （1＋1, V/V） and pontificated by gel chromatography. Using Florida silica column chromatography as separate pole can effectively separate of 9 kinds organochlorine pesticides and 5 kinds of pyrethroid pesticides and eliminate interference. The results show that the calibration curves are linear （R2〉0.995） in the range of 0.01-0.10 mg/L for all the pesticides. The average recoveries are between 78.3% and 103.5%, and relative standard deviations are among 4.1%~7.3%. The limits of detection for organochlorines and pyrethroid pesticides are 0.002 mg/kg and 0.005 mg/kg. The advantages of the method are sensitive and stable. It applies to domestic and international limits for pesticide residue testing requirements and provides technical support for the export of asparagus.

关 键 词：气相色谱 有机氯 拟除虫菊酯 芦笋 

分 类 号：O657.7[理学—分析化学]