Studies on Carbon Mediated Paste Screen Printed Sensors for Blood Glucose Sensing Application

Varadharaj, Eswaramoorthy K and Jampana, Nagaraju (2015) Studies on Carbon Mediated Paste Screen Printed Sensors for Blood Glucose Sensing Application. In: ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY, 4 (10). S3077-S3082.

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Abstract

Ready-to-use screen printed glucose sensors are fabricated using Prussian Blue (PB) and Cobalt Phthalocyanine (CoPC) mediated carbon inks as working electrodes. The reference and counter electrodes are screen printed using silver/silver chloride and graphitic carbon paste respectively. The screen printed reference electrodes (internal reference electrode (IRE)) are found to be stable for more than 60 minutes when examined with saturated calomel electrode. Optimal operating voltage for PB and CoPC screen printed sensors are determined by hydrodynamic voltammetric technique. Glucose oxidase is immobilized on the working electrodes by cross-linking method. PB mediated glucose sensor exhibits a sensitivity of 5.60 mA cm(-2)/mM for the range, 10 to 1000 mu M. Sensitivity of CoPC mediated glucose sensor is found to be 5.224 mu A cm(-2)/mM and amperometeric response is linear for the range, 100 to 1500 mu M. Interference studies on the fabricated glucose sensors are conducted with species like uric acid and ascorbic acid. PB mediated sensors showed a completely interference-free behavior. The sensing characteristics of PB mediated glucose sensors are also studied in diluted human serum samples and the results are compared with the values obtained through standard clinical method. The co-efficient of variation is found to be less than 5%. (C) 2015 The Electrochemical Society. All rights reserved.

Item Type:	Journal Article
Publication:	ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
Publisher:	ELECTROCHEMICAL SOC INC
Additional Information:	Copy right for this article belongs to the ELECTROCHEMICAL SOC INC, 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA
Department/Centre:	Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited:	02 Apr 2016 09:41
Last Modified:	02 Apr 2016 09:41
URI:	http://eprints.iisc.ac.in/id/eprint/53527

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