AN AMPEROMETRIC LACTATE SENSOR EMPLOYING TETRATHIAFULVALENE IN NAFION FILM AS ELECTRON SHUTTLE

被引：41
|
作者：
LIU, HY [1 ]
DENG, JQ [1 ]
机构：
[1] FUDAN UNIV,DEPT CHEM,SHANGHAI 200433,PEOPLES R CHINA
来源：
ELECTROCHIMICA ACTA | 1995年 / 40卷 / 12期
关键词：
TETRATHIAFULVALENE; L-LACTATE; LACTATE OXIDASE; NAFION; SENSOR;
D O I：
10.1016/0013-4686(95)00099-Z
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The development of an amperometric sensor utilizing tetrathiafulvalene (TTF) as an electron shuttle between immobilized lactate oxidase and a glassy carbon electrode is described. The problem of mediator leaking in electrodes using TTF is overcome by employing Nafion membrane that prevents leaching of positive TTF+ ions by electrostatic attraction. Stability, interference, and the factors such as oxygen, applied potential, and pH influencing the performance of the lactate sensor are examined and discussed. The response of the sensor to lactate under N-2 saturation reaches 95% steady-state current within 40s.
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页码：1845 / 1849
页数：5
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