UPLC法快速测定果蔬中8种农药多残留

建立了超高效液相色谱法(UPLC)同时测定果蔬中8种农药(吡虫啉、啶虫脒、多菌灵、嘧霉胺、除虫脲、灭幼脲、辛硫磷、阿维菌素)残留量的的同时检测法,优化了色谱条件.样品经乙腈提取,氨基固相萃取小柱净化,于波长255 nm进行检测.8种农药的加标回收率范围为72.4％ ～120.0％,相对标准偏差(RSD)为0.28％～10.96％,检出限范围为0.01～0.07 mg/kg.本方法准确、快速、重复性好,尤其适于批量样品的多残留快速检测.

Multi-residue Analysis of Eight Pesticides Residue in Vegetables and Fruits by Ultra-high-performance Liquid Chromatography(UPLC)

A method was developed for the simultaneity determining of 8 kinds of pesticides(Imidacloprid,Acetamiprid,Carbendazin,Pyrimethanil,Diflubenzuron,Chlorbenzuron,Phoxim and Avermectins)in vegetables and fruits by ultra high performance liquid chromatography(UPLC).Chromatographic conditions were optimized.The sample was extracted with acetonitrile,cleaned by passing through LC-NH2 SPE column and then detected at 254 nm.The recoveries were ranged from 72.4% to 120.0% and the relative standard deviations(RSD)ranged from 0.28% to 10.96%.The limit of determination(LOD)was 0.01～0.07 mg/kg.This method is accurate,rapid,and reproducible.It fits for rapid analysis of multi-residue in batch sample especially.