Quantitative analysis of the electrode polarization and pH measurement

被引：0
|
作者：
Bau, JG [1 ]
Wang, WK [1 ]
Wang, YYL [1 ]
机构：
[1] Natl Taiwan Univ, Dept Phys, Taipei, Taiwan
来源：
METMBS '04: PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON MATHEMATICS AND ENGINEERING TECHNIQUES IN MEDICINE AND BIOLOGICAL SCIENCES | 2004年
关键词：
polarization; electrode; pH; stainless steel; Ringer solution;
D O I：
暂无
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
A quantitative analysis of the electrode polarization is proposed as a method of detection. The transient current of the step potential was used, and demonstrated on the pH measurement. By using a stainless steel electrode, we can clearly distinguish pH 7 from pH 5.9 in the Ringer solutions, while there is 9 times S.E. in between on the K-TQ plots. TQ is the average current from 0 to 2.5 msec, and K is the transient conductance. It is also found the contribution to the transient current of pH is 100 times larger than that of K+ and Cl- ions. With the advantages of a minimized electrode and short response time, our method will be practical for either in vitro or in vivo tests.
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页码：139 / 145
页数：7
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