| 高效液相色谱法测定食醋中乳酸的不确定度评定 |
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| 引用本文： | 惠燕,宗莹莹,何学英,朱瑞强,杨秀培.高效液相色谱法测定食醋中乳酸的不确定度评定[J].食品安全质量检测技术,2014,5(7):2186-2191. |
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| 作者姓名： | 惠燕 宗莹莹 何学英 朱瑞强 杨秀培 |
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| 作者单位： | 西华师范大学化学化工学院,西华师范大学化学化工学院,西华师范大学化学化工学院,南充市产品质量监督检验所,西华师范大学化学化工学院 |
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| 基金项目： | 四川省大学生创新创业训练计划项目(201310638044)；国家自然科学基金面上项目(21277109) |
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| 摘 要： | 摘 要： 目的 建立高效液相色谱法测定食醋中乳酸的不确定度的数学模型。方法 根据JJF1059.1-2012《测量不确定度评定与表示》，从测量过程各步骤分析不确定度来源，并对已识别来源的不确定度影响进行评价和分析。结果 测量结果不确定度主演来源于乳酸标准溶液、试样溶液配制和液相色谱仪的定量重复性。当食醋中乳酸含量为48.49mg/g时，其扩展不确定度为1.34mg（k=2）。结论 该研究可为实验室评定食醋中乳酸含量的测定结果质量提供参考。
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| 关 键 词： | 食醋 乳酸 高效液相色谱 不确定度 |
| 收稿时间： | 6/4/2014 12:00:00 AM |
| 修稿时间： | 7/7/2014 12:00:00 AM |
Uncertainty evaluation for determining concentration of lactic acid in vinegar by high performance liquid chromatography |
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| HUI Yan,ZONG Ying-Ying,HE Xue-Ying,ZHU Rui-Qiang and YANG Xiu-Pie.Uncertainty evaluation for determining concentration of lactic acid in vinegar by high performance liquid chromatography[J].Food Safety and Quality Detection Technology,2014,5(7):2186-2191. |
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| Authors: | HUI Yan ZONG Ying-Ying HE Xue-Ying ZHU Rui-Qiang and YANG Xiu-Pie |
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| Affiliation: | College of Chemistry and Chemical Engineering,China West Normal University,Sichuan Nanchong,College of Chemistry and Chemical Engineering,China West Normal University,Sichuan Nanchong,College of Chemistry and Chemical Engineering,China West Normal University,Sichuan Nanchong,Nanchong Institute of Product Quality Supervision Inspection,Sichuan Nanchong,College of Chemistry and Chemical Engineering,China West Normal University,Sichuan Nanchong |
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| Abstract: | Objective A mathematical model was established to assess the uncrtainty for detection the concentration of lactic acid in vinegar by high performance liquid chromatography. Method According to JJF1059.1-2012, various sources of uncertainty from the detection procedure were assessed. The effects of the identified uncertainty on the analytical result were evaluated. Results The impacts of major source of measurement uncertainty were lactic acid solution, sample solution and the quantitative repeatability of HPLC. When the content of lactic acid in vinegar was 48.49mg/g, the expanded uncertainty reached 1.34mg (k=2). Conclusion The study can provide a reference for evaluating quality of lactic acid content in vinegar. |
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| Keywords: | vinegar lactic acid high performance liquid chromatography uncertainty |
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