Determination of Tebuconazole Residues in Soil and Apple with GC

[Objective] The aim was to the study the GC determination method for the buconazole residues in the soil and apple so as to detect and analyze the residue condition of the buconazole in the soil and apple accurately.[Method] The buconazole was extracted and purified from the 10.0 g apple samples and 10.0 g soil samples.The GC conditions were as follows: chromatographic column: HP-5,30.0 m×0.32 mm×0.25 μm;detection temperature: the column temperature of 250 ℃,the detector temperature of 325 ℃ and the injection port temperature of 250 ℃;injection volume: 1 L;carrier gas: 1.0 ml/min nitrogen(≥99.99%);combustion gas: 3.0 ml/min hydrogen and 60.0 ml/min air;buconazole retention time: about 10 min.[Result] The buconazole had good linear relationship in the range of 0.05-5.00 mg/L and the detection limit of the method was 0.01 mg/kg.The fortified recoveries in the soil were 91.8%-98.8% and the relative standard deviation(RSD) were 1.2%-11.8%.The fortified recoveries in the apple were 84.3%-96.6% and the relative standard deviation(RSD) were 2.3%-3.3 %.[Conclusion] The research established the GC analyzing method for the buconazole residues in the soil and apple and the method was simple and credible,which could be used in the detection of the buconazole residues in the soil and apple.