A new pH-ISFET based dissolved oxygen sensor by employing electrolysis of oxygen

被引：43
|
作者：
Sohn, BK [1 ]
Kim, CS [1 ]
机构：
[1] KYUNGPOOK NATL UNIV,SENSOR TECHNOL RES CTR,PUK KU,TAEGU 702701,SOUTH KOREA
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 1996年 / 34卷 / 1-3期
关键词：
dissolved oxygen sensor; pH-ISFET; Clark type sensor; oxygen electrolysis; working electrode;
D O I：
10.1016/S0925-4005(97)80017-2
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A new dissolved oxygen sensor based on a pH-ISFET is discussed. A working electrode surrounding a pH-sensing gate of the pH-ISFET electrolytes dissolved oxygen, resulting in a corresponding pH change near the pH-sensing gate. The pH-ISFET is expected to determine dissolved oxygen concentration by detecting this pH change. The results suggest that the proposed sensor operated by a combined mechanism of an amperometric sensor (Clark type sensor) and a potentiometric sensor (pH-ISFET) is feasible to determine the content of dissolved oxygen. The dependence of sensor output on several factors, such as buffering capacity, bulk pH and stirring of the solution, is investigated and a comparison between the Clark type sensor and proposed sensor is also discussed.
引用
收藏
页码：435 / 440
页数：6
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