CAJ | 학술논문

通过数学建模,对GB/T22388-2008中HPLC法测定牛奶中三聚氰胺残留量的不确定度进行分析。将各个分量分化,运用最小二乘法对标准曲线拟合的不确定度,用极差法对测定次数较少时引起的不确定度,添加回收率的不确定度等进行分析。结果表明,合成标准不确定度U（X）=0.040,当取样量为2.00g,k=2（95%置信度）时,测得牛奶中三聚氰胺的含量为（2.00±0.160）mg/kg。
통과수학건모,대GB/T22388-2008중HPLC법측정우내중삼취청알잔류량적불학정도진행분석。장각개분량분화,운용최소이승법대표준곡선의합적불학정도,용겁차법대측정차수교소시인기적불학정도,첨가회수솔적불학정도등진행분석。결과표명,합성표준불학정도U（X）=0.040,당취양량위2.00g,k=2（95%치신도）시,측득우내중삼취청알적함량위（2.00±0.160）mg/kg。
The purpose of this study was to analyze the determination uncertainty of the melamine residue in milk which was determined by establishing HPLC method,according to GB/T 22388-2008,the mathematical modeling was set up.Specifically,each component of the uncertainty needed to be analyzed,including analyzing the fitness uncertainty of the standard curve with the minimum squares method,analyzing the uncertainty accentuated by the deficiency in determinations and the uncertainty of the recovery with the range method,etc.The result showed that the combined standard uncertainty was 0.040,the melamine content of the milk was（2.00±0.160） mg/kg when the amount of sample was 2.00 g and k=2（The confidence degree was 95%）.