基质对气相色谱法检测蔬菜中有机磷农药的影响  

Matrix effects on analysis of organophosphorus pesticide residue in vegetables by gas chromatographic methods

作　　者：金铨[1] 丁华[1] 栾丽娃[1] 滕卫林[1] 刘卫艳[1] 张宜明[1] 

机构地区：[1]杭州市疾病预防控制中心,杭州310006

出　　处：《中国卫生检验杂志》2008年第4期637-638,694,共3页Chinese Journal of Health Laboratory Technology

摘　　要：目的:解决蔬菜水果样品在采用气相色谱法分析有机磷农药残留时的基质效应对分析结果的影响。方法:采用样品基质溶液稀释标准溶液,然后绘制标准曲线用于样品结果校正。结果:方法的精密度得到改善,克服了添加回收率偏高的问题。结论:采用空白样品的基质溶液配制标准溶液进行分析结果的校正,可以提高该方法的准确性和精密度。Objective：To overcome the matrix effects on residue determination of some organophosphorus pesticides in vegetables and fruits by gas chromatography （GC）, Methods： Initial data of samples were corrected with the standard curve which obtained by the standards pre - diluted with matrix solution free of the analytes. Results ： The precision of the GC method was im- proved, and it solved the problem that the recoveries of fortified samples trended to upper departure from 110%. Conclusion：The accuracy and precision could be improved when data are corrected with the method mentioned above in organophosphorus pesticides residue determinations in vegetables and fruits by gas chromatography （GC）,

关 键 词：有机磷 基质效应 气相色谱 农药残留 

分 类 号：O657.71[理学—分析化学]