CAJ | 학술논문

采用高效液相色谱法测定果汁饮料中苯甲酸的含量，对测定结果的不确定进行了分析。建立了高效液相色谱外标单点定量法测定样品中苯甲酸含量的数学模型，分析了不确定度的来源并给出了量化结果，计算出合成标准不确定度和扩展不确定。分析结果表明，当果汁饮料中苯甲酸的含量为104 m g/kg时，其扩展不确定度为3 m g/kg，k=2。
채용고효액상색보법측정과즙음료중분갑산적함량，대측정결과적불학정진행료분석。건립료고효액상색보외표단점정량법측정양품중분갑산함량적수학모형，분석료불학정도적래원병급출료양화결과，계산출합성표준불학정도화확전불학정。분석결과표명，당과즙음료중분갑산적함량위104 m g/kg시，기확전불학정도위3 m g/kg，k=2。
The determ ination uncertainty of benzoic acid in fruit juice by H PLC w as evaluated. The m athem atical m odels to evaluate the uncertainty of quantitative results of H PLC external standard single point m ethod w ere established, and each source and uncertainty com ponent w as analyzed, and the com bined expanded uncertainty w as m easured. T he expanded uncertainty w as 3 m g/kg(k=2),as the content of benzoic acid in fruit juice w as 104 m g/kg.