| 动力学分光光度法快速测定高pH值 |
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| 引用本文： | 赵永红,陈天禄,刘志宏,吕利光. 动力学分光光度法快速测定高pH值[J]. 分析测试学报, 2006, 25(2): 103-105 |
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| 作者姓名： | 赵永红 陈天禄 刘志宏 吕利光 |
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| 作者单位： | 江西理工大学,江西,赣州,341000;中国科学院长春应用化学研究所,吉林,长春,130022;河南济源市环境监测站,河南,济源,454650 |
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| 摘 要： | 传统的pH值玻璃电极传感器在pH 1·0~12·0的范围内具有很好的准确性,但在pH<1·0和pH>12·0的条件下会产生“酸误”和“碱误”[1-3]。氢氧化钠是最常用的化学试剂之一,因此它的准确测定在各种工业过程如产品的质量控制,环境污染控制,以及设备腐蚀控制过程中等具有重要作用。已
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| 关 键 词： | 动力学光度法 酚酞 pH值 测定 |
| 文章编号： | 1004-4957（2006）02-0103-03 |
| 收稿时间： | 2005-04-12 |
| 修稿时间： | 2005-06-16 |
Kinetic Spectrophotometric Determination of High pH Values |
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| ZHAO Yong-hong,CHEN Tian-lu,LIU Zhi-hong,L Li-guang. Kinetic Spectrophotometric Determination of High pH Values[J]. Journal of Instrumental Analysis, 2006, 25(2): 103-105 |
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| Authors: | ZHAO Yong-hong CHEN Tian-lu LIU Zhi-hong L Li-guang |
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| Affiliation: | 1.Jiangxi University of Science and Technology, Ganzhou 341000, China; 2. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; 3. Henan Jiyuan Environmenl Monitoring Station, Jiyuan 454650, China |
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| Abstract: | Based on the pseudo-first order kinetic process of the discoloration of phenolphthalein at high pH value, a rapid and accurate method for the determination of high pH value was developed. The pH determination range of this method was 12. 2 - 14.0 and the errors were within 0. 05 -0. 2 pH unit. It was found that the higher the pH value, the smaller the error. Compared with the conventional titration method, this method is simple and consumes less reagents. |
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| Keywords: | Kinetic spectrophotometer Phenolphthalein pH value Determination |
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