摘要
目的建立蔬菜、水果中6种农药的气相色谱-质谱联用分析方法。方法通过对其前处理、仪器条件的优化,以及灵敏度、精密度和基质适用性的研究,建立一种优化后的多种农药多残留检测方法;该方法采用超声波萃取,凝胶渗透色谱净化(gel permeation chromatography,GPC),气相色谱-质谱联用(gaschromatography-mass spectrometry,GC/MS)分析。结果6种农药在0.2~1.0 mg/L浓度范围内线性良好,相关系数大于0.995。加标回收率在70.2%~105.7%之间,相对标准偏差(relative standard deviation,RSD)均≤7%。结论本研究建立的方法操作简便、灵敏度高、重现性好,可以用于日常的检验工作。
Objective To establish a method for the analysis of 6 pesticides in vegetables and fruits by gas chromatography-mass spectrometry(GC-MS).Methods An optimized method for detection of multiple pesticide residues was established by optimizing its pretreatment,instrument conditions,sensitivity,precision and matrix applicability.This method was characterized by ultrasonic extraction,gel chromatation chromatography(GPC)and gas chromatography-mass spectrometry(GC-MS).Results The six kinds of pesticides had good linear relationships in the range of 0.2–1.0 mg/L,and the correlation coefficients were greater than 0.995.The standard recovery were 70.2%–105.7%,with the relative standard deviations of lower than 7%.Conclusion The method developed in this study is simple,sensitive and reproducible,and which can be used in routine inspection.
作者
赵红艳
罗亮
张强
ZHAO Hong-Yan;LUO Liang;ZHANG Qiang(Centre Testing International Corporation in Anhui,Hefei 230601,China)
出处
《食品安全质量检测学报》
CAS
2019年第18期6343-6348,共6页
Journal of Food Safety and Quality
关键词
蔬菜
水果
多种农药残留
气相色谱-质谱联用法
vegetables
fruits
multiresidue pesticide
gas chromatography-mass spectrometry
