摘要
以丙酮为提取剂，超声提取大米中有机磷农药残留，结合气相色谱-火焰光度检测器（GC-FPD）进行检测，建立了大米中多种有机磷农药残留分析新方法。6种有机磷农药在0．01～0．5 mg＆#183;L-1范围内线性良好，线性相关系数为0．9988～0．9999。方法回收率为72．8％～114．6％，相对标准偏差为3．3％～5．8％，检出限在0．002～0．014 mg·L-1之间。该方法简便、快速、灵敏度高、选择性好，适合大米样品中有机磷农药残留分析。
A new method was established for the simultaneous determination of 6 organophosphorus pesti-cides in rice.The rice samples were extracted by acetone in an ultrasonic water bath.The determination of pesticides in the final extracts was carried out by gas chromatography＆quot; flame photometric detector.Six organophosphorus pesticides all represent good linearity between signal and concentration in the range of 0.01-0.5 mg·L-1 ,with correlation coefficients in the range of 0.998 8-0.999 9.Under optimized condi-tions,the average recoveries were ranged from 72.8% to 114.6%,with RSDs from 3.3% to 5.8%,respec-tively.The detection limits range were 0.002-0.014 mg＆#183;L-1 .Thus,this work demonstrates a fast,sim-ple,good sensitive and selective method.It could be successfully applied to the analysis of those pesticides in rice sample.
出处
《南昌大学学报（理科版）》
CAS
北大核心
2013年第6期540-543,共4页
Journal of Nanchang University(Natural Science)
基金
国家科技支撑计划课题(2012BAK17B02)
食品科学与技术国家重点实验室自由探索课题(SKLF-ZZB-201304)
关键词
超声波辅助提取
气相色谱法
有机磷农药
大米
Ultrasonic-assisted extraction
Gas chromatography
Organophosphorus pesticide residues
Rice
