保留时间锁定大体积进样和固相萃取G/CMS法同时测定果蔬中多种农药残留量

Study on determination of multiresidue of pesticides in fruit by SIM-GC/MS using retention time locking with solid phase extraction

目的:建立同时测定果蔬中多种农药残留量的检测方法。方法:用固相萃取手段提取、净化水果中的多农药残留,并用保留时间锁定和SIM-GC/MS技术结合大体积进样技术进行定性定量分析的测定。结果:本方法可同时检测果蔬多种农药(可望达到200种以上)。结论:方法大大降低检测低限、回收率好、效率高。

Objective：To develop a method to determine multiresidue of pesticides in fruit.Methods：One method was developed to determine multiresidue of pesticides in fruit by gas chromatography/mass spectrometer with retention time locking and large volume injection through using SPE to extract and purify.Results：The method was developed to determine multiresidue of pesticides in fruit（〉200 variety of pesticides）.Conclusion：The method is of good recovery and efficiency to reduce determination limit in great force.