| 茶叶中游离氨基酸总量的测量不确定度评定 |
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| 引用本文： | 谢颖颖.茶叶中游离氨基酸总量的测量不确定度评定[J].四川林业科技,2019(3):109-114. |
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| 作者姓名： | 谢颖颖 |
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| 作者单位： | 国家茶叶产品质量监督检验中心(四川);四川省雅安市产品质量监督检验所 |
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| 基金项目： | 《蒙顶甘露茶》—中华人民共和国供销合作行业标准(2014GH-1-015) |
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| 摘 要： | 通过对分光光度法测定茶叶中游离氨基酸总量的测量过程进行分析,根据《测量不确定度评定与表示》(JJF 1059.1-2012)中有关规定,识别检测过程的不确定度来源,并推导出不确定度计算公式,得出各种因素对检测结果的影响程度,发现标准曲线拟合对不确定度的影响最大,这为提高测量数据的质量提供了依据。
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| 关 键 词： | 不确定度 分光光度法 茶叶 游离氨基酸总量 |
Evaluation of the Measurement Uncertainty for Total Amount Determination of Free Amino Acids in Tea |
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| XIE Ying-ying.Evaluation of the Measurement Uncertainty for Total Amount Determination of Free Amino Acids in Tea[J].Journal of Sichuan Forestry Science and Technology,2019(3):109-114. |
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| Authors: | XIE Ying-ying |
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| Institution: | (National Tea Quality Supervision and Inspection Center (Sichuan), Ya'an,625000;Sichuan Ya an Municipal Product Quality Supervision and Inspection Institute,Ya'an,625000) |
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| Abstract: | The spectrophotometric determination method was adopted to analyze the measurement for the determination of total amount of free amino acids in tea.According to the relevant regulations documented in the《Evaluation and Expression of Uncertainty in Measurement》(JJF 1059.1-2012),the source of the uncertainty in the detection processwas identified,and the uncertainty calculation formula was deduced.Comparing the different effects of various factors on the measure results,it was found that the standard curve fitting had the biggest impact on the uncertainty.This finding made contribution to improving the quality of data measurement. |
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| Keywords: | Uncertainty Spectrophotometry Tea Total amount of free amino acids |
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