Abstract
Abstract The aim of this study is to develop residue analysis method for fenoxanil, a MBI (melaninbiosynthesis inhibitor) propionamide fungicide, had mainly been used to control rice blast, and disease ofother crops, fruits, and vegetables by using GLC/NPD and GC/MS. Extraction with acetone and partitionwith n-hexane/dichloromethane (80/20, v/v) were performed from hulled rice, soybean, Kimchi cabbage,green pepper, and apple, then column clean-up with florisil was applied. Mean recoveries were 82.2%-109.1% with less than 7.2% of coefficients of variation and limit of quantitation was set at the concentrationof 0.04 mg/kg from the five agricultural products through the determination by GLC/NPD equipped with DB-5 capillary column and single laboratory validation. As a confirmatory method, GC/MS selected ionmonitoring (SIM) was set from m/z 125.0, 188.9, and 293.0. Developed method is expected to apply thesingle residue analysis of fenoxanil in agricultural products.Key words Fenoxanil, GC-NPD/MS, Single residue
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