Capillary gas chromatographic determination of dimethachlon residues in fresh tobacco leaves and cut-tobacco
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Simple procedures for extraction and chromatographic determination of dimethachlon residues in fresh tobacco leaves and cut-tobacco are described. The determination was carried out by capillary gas chromatography (GC) with electron capture detection (ECD) and confirmed by GC-MS. The mean recoveries and relative standard deviation (RSD) were 93.2%∼112.9% and 3.5%∼6.7%, respectively at levels ranging from 0.01 to 0.1 mg/kg. The limit of determination was 0.001 mg/kg. Tobacco samples in routine check were successfully analyzed using the proposed method.
Key wordsDimethachlon residues Tobacco Gas chromatography (GC)
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