| pH计指示电位滴定法测定陈醋中的总酸及其不确定度评定 |
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| 引用本文： | 蔡成翔. pH计指示电位滴定法测定陈醋中的总酸及其不确定度评定[J]. 广西右江民族师专学报, 2006, 19(3): 46-51 |
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| 作者姓名： | 蔡成翔 |
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| 作者单位： | 广西右江民族师专化学与生命科学系,广西百色533000 |
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| 摘 要： | 采用传统方法酿制的陈醋由于自身成分复杂，色泽黑紫，采用普通指示剂酸碱滴定法测定总酸，终点颜色变化易被其本色掩盖。文章采用pH计指示电位滴定法进行测定，具有设备简单、操作简便、精确度高等优点，减少了人为因素带来的影响。
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| 关 键 词： | 老陈醋 总酸测定 电位滴定法 不确定度 |
| 文章编号： | 1008-8113（2006）03-0046-06 |
| 收稿时间： | 2006-02-28 |
The pH Determination of Total Acid in Mature Vinegar and Its Degree of Uncertainty |
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| CAI Cheng-xiang. The pH Determination of Total Acid in Mature Vinegar and Its Degree of Uncertainty[J]. Journal of Youjiang Teachers College For Nationalities Guangxi, 2006, 19(3): 46-51 |
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| Authors: | CAI Cheng-xiang |
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| Affiliation: | Department of Chemistry and Life Science, Youjiang Teachers College for Nationalities, Baise 533000, China |
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| Abstract: | The color of the vinegar brewed in a traditional way is black and purple. If the Acid-Base Titration is adopted to determine the total acid, the change of the final color is easily covered by the original one. This paper suggests using the Potentiometric titration, which may simplify the process and improve the degree of certainty and reduce the negative effects brought by mankind. |
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