气相色谱法测定番茄中腐霉利残留量的 不确定度评定

Determination of the uncertainty of procymidone residue in tomato by gas chromatography

中文关键词:  不确定度  气相色谱法  番茄  腐霉利

英文关键词:uncertainty  gas chromatography  tomato  procymidone

中文摘要:

      目的 评定气相色谱法测定番茄中腐霉利残留量的不确定度。方法 依据NY/T 761-2008 《蔬菜和水果中有机磷、有机氯、拟除虫菊酯和氨基甲酸酯类农药多残留量的测定》对腐霉利测定中的不确定来源进行分析, 建立数学模型, 计算各不确定度分量, 合成扩展不确定度。结果 当在番茄中的腐霉利添加量为10 μg/kg时, 测定结果为9.03 μg/kg, 番茄中腐霉利的不确定度为0.55 μg/kg。结论 本方法不确定度主要来 源是在前处理过程、标准配置与重复性测量中产生的, 其他因素影响较小。

英文摘要:

      Objective To evaluate the uncertainty of determination of procymidone residues in tomato by gas chromatography. Methods Based on NY/T 761-2008 Determination of organophosphates, organochlorines, pyrethroids, and carbamate pesticides in vegetables and fruits, the uncertainty sources of the determination of procymidone residues were analyzed, the mathematical model was established, the uncertainty component was calculated, and the uncertainty of the synthetic extension was obtained. Results When the added amount was 10 μg/kg, the uncertainty of procymidone in tomato was 0.55 μg/kg, and the determination result was 9.03 μg/kg. Conclusion The main sources of uncertainty in this method are those generated in the pre-treatment process, standard configuration, and repeatability measurements, other factors have little effect.