A glucose sensor based on graphite paste modified with tetracyanoquinodimethane
IR@NISCAIR: CSIR-NISCAIR, New Delhi - ONLINE PERIODICALS REPOSITORY (NOPR)
View Archive Info| Field | Value | |
| Title |
A glucose sensor based on graphite paste modified with tetracyanoquinodimethane
|
|
| Creator |
Pandey, P C
Pandey, V Mehta, S |
|
| Description |
667-672
An arnperometric enzyme electrode for glucose based on glucose oxidase (GOD) incorporated into a graphite paste modified with tetracyanoquinodimethane (TCNQ) shows long term stability (65% loss of initial response after 26d). The sensor provides a linear response to glucose over a wide concentration range (linear=0.5-100 mmol and non-linear = 100-300 mmol). The response time of the sensor is 15-50 sec and the detection limit is 0.5 mmol. Stable response to the substrate is obtained over a period of several weeks upon storage in 0.1<em>M </em> phosphate buffer (<em>p</em>H 7.0) at room temperature. Data are presented on the influence of binder composition, anodic potential, <em>p</em>H<em>, </em> and temperature upon the electrode. A qualitative approach to the kinetic analysis of the electrode response is reported based on cyclic voltammetric data. Comparison of the electrode response is made with the data obtained using ferrocene-mediated graphite paste glucose sensor and it is concluded that TCNQ has better compatibility with the graphite paste than ferrocene derivatives though ferrocene is more efficient mediator than TCNQ. |
|
| Date |
2018-03-20T11:55:20Z
2018-03-20T11:55:20Z 1993-08 |
|
| Type |
Article
|
|
| Identifier |
0975-0975(Online); 0376-4710(Print)
http://nopr.niscair.res.in/handle/123456789/43954 |
|
| Language |
en_US
|
|
| Rights |
<img src='http://nopr.niscair.res.in/image/cc-license-sml.png'> <a href='http://creativecommons.org/licenses/by-nc-nd/2.5/in' target='_blank'>CC Attribution-Noncommercial-No Derivative Works 2.5 India</a>
|
|
| Publisher |
NISCAIR-CSIR, India
|
|
| Source |
IJC-A Vol.32A(08) [August 1993]
|
|