| 自动电位滴定法测定三乙酸甘油酯的酸度 |
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| 引用本文： | 周培琛,刘泽春,黄华发,张峰,张鼎方,刘江生,赖伟玲.自动电位滴定法测定三乙酸甘油酯的酸度[J].烟草科技,2011(11). |
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| 作者姓名： | 周培琛 刘泽春 黄华发 张峰 张鼎方 刘江生 赖伟玲 |
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| 作者单位： | 福建中烟工业公司技术中心,福建省厦门市,361022 |
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| 摘 要： | 为了克服常规酸碱滴定法测定三乙酸甘油酯酸度存在的诸如终点不易观察,相对标准偏差( RSD)较大等缺点,考察了自动电位滴定法.结果表明,自动电位滴定法的RSD为0.774％,定量限0.00175％,回收率99.5％～103.3％.该方法可以快速准确地测定三乙酸甘油酯的酸度.
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| 关 键 词： | 三乙酸甘油酯 自动电位滴定法 酸度 |
Determination of Acidity of Triacetin with Automatic Potentiometric Titration |
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| ZHOU PEI-CHEN,LIU ZE-CHUN,HUANG HUA-FA,ZHANG FENG,ZHANG DING-FANG,LIU JIANG-SHENG,LAI WEI-LING.Determination of Acidity of Triacetin with Automatic Potentiometric Titration[J].Tobacco Science & Technology,2011(11). |
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| Authors: | ZHOU PEI-CHEN LIU ZE-CHUN HUANG HUA-FA ZHANG FENG ZHANG DING-FANG LIU JIANG-SHENG LAI WEI-LING |
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| Affiliation: | ZHOU PEI-CHEN,LIU ZE-CHUN,HUANG HUA-FA,ZHANG FENG,ZHANG DING-FANG,LIU JIANG-SHENG,and LAI WEI-LING Technology Center,China Tobacco Fujian Industrial Co.,Ltd.,Xiamen 361022,Fujian,China |
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| Abstract: | In order to get rid of the disadvantages of conventional acid-base titration in determining the acidity of triacetin,such as inconvenience in endpoint differentiation and high relative standard deviation,automatic potentiometric titration was investigated.The results showed that the recoveries of the method ranged from 99.5% to 103.3% with the relative standard deviation of 0.774% and the limit of quantitation of 0.00175%.It proved that the acidity of triacetin could be rapidly and accurately determined wit... |
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| Keywords: | Triacetin Automatic potentiometric titration Acidity |
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