Residue Analysis of Procymidone,Imazalil,Iprodione andProchloraz in Apple,Banana and Citrus

The GC-ECD method of determination of procymidone,imazalil,iprodione and prochloraz in apple,citrus and banana by acetonitrile extracting,dispersed SPE cleanup and matrix-matched standards quantitation procedure was developed.At 3 fortified levels (0.02,0.05 and 0.10 mg/kg),the recoveries of procymidone,imazalil,and prochloraz were in the range of 85.1% ~108.4% and the relative standard deviations were in the range of 0.5% ~7.9%.The recoveries of iprodione at 3 fortified levels (0.05,0.10 and 0.20 mg/kg) were 82.9% ~98.8% with relative standard deviations of 3.6% ~8.6%.The limits of detection (LOD) were in the range of 0.001 ~0.008 mg/kg,and the limits of quantification(LOQ) in the range of 0.003 ~0.03 mg/kg.