CAJ | 학술논문

目的：采用气相色谱法-质谱法对牛奶中有机磷农药残留的不确定度进行评估。方法通过气质联用法对测定牛奶中有机磷农药残留量测定过程进行分析，应用数学模型计算出测定过程中的不确定度，最后计算出相对合成标准不确定度和扩展不确定度。结果当牛奶中敌敌畏含量为0.507 mg/kg时，其扩展不确定度为7.35×10-3 mg/kg (k=2)；当牛奶中甲拌磷含量为0.509 mg/kg时，其扩展不确定度为5.45×10-3 mg/kg(k=2)；当牛奶中乐果含量为0.450 mg/kg时，其扩展不确定度为6.35×10-3 mg/kg (k=2)；当牛奶中毒死蜱含量为0.459 mg/kg时，其扩展不确定度为6.09×10-3 mg/kg (k=2)；当牛奶中对硫磷含量为0.435 mg/kg时，其扩展不确定度为6.53×10-3 mg/kg (k=2)。结论影响测量结果不确定度的主要来源为标准溶液配制的准确性、测量重复性和方法的准确度，其他因素的影响相对较小。
목적：채용기상색보법-질보법대우내중유궤린농약잔류적불학정도진행평고。방법통과기질련용법대측정우내중유궤린농약잔류량측정과정진행분석，응용수학모형계산출측정과정중적불학정도，최후계산출상대합성표준불학정도화확전불학정도。결과당우내중활활외함량위0.507 mg/kg시，기확전불학정도위7.35×10-3 mg/kg (k=2)；당우내중갑반린함량위0.509 mg/kg시，기확전불학정도위5.45×10-3 mg/kg(k=2)；당우내중악과함량위0.450 mg/kg시，기확전불학정도위6.35×10-3 mg/kg (k=2)；당우내중독사비함량위0.459 mg/kg시，기확전불학정도위6.09×10-3 mg/kg (k=2)；당우내중대류린함량위0.435 mg/kg시，기확전불학정도위6.53×10-3 mg/kg (k=2)。결론영향측량결과불학정도적주요래원위표준용액배제적준학성、측량중복성화방법적준학도，기타인소적영향상대교소。
Objective To evaluate organic phosphorus residues in milk by gas chromatography-tandem mass spectrometry.Methods The evaluation process of organic phosphorus residues in milk was determined by gas chromatography-tandem mass spectrometry (GC-MS), at the same time, mathematical model was applied to calculate the uncertainty component in the process, then, the relative combined standard uncertainty and expanded uncertainty were calculated.Results The expanded uncertainty was 7.35×10-3, 5.45×10-3, 6.35×10-3, 6.09×10-3 and 6.53×10-3 mg/kg (k=2), when dichlorvos, phorate, dimethoate, chlorpyrifos and parathion content in milk were 0.507, 0.509, 0.450, 0.459 and 0.435 mg/kg, respectively.Conclusion The main sources which affect the uncertainty measurement were the accuracy of the standard solution preparation, the repeatability of measurement and accuracy of method, other factors had less affect to uncertainty measurement.