Decreasing the Polymerization Potential Improves the Selectivity of PPD-Coated Disc Biosensors for Glutamate

• Published in: Analytical letters Vol. 42; no. 5; pp. 739 - 745
• Main Authors: Govindarajan, Sridhar, McNeil, Calum J.
• Format: Journal Article
• Language: English
• Published: Philadelphia, PA Taylor & Francis Group 01.01.2009; Taylor & Francis
• Subjects: Analytical chemistry; Biological and medical sciences; Biosensor; Biosensors; Biotechnology; Chemistry; Exact sciences and technology; Fundamental and applied biological sciences. Psychology; General, instrumentation; glutamate; Methods. Procedures. Technologies; polymerization; PPD; selectivity; Various methods and equipments; polymerization; Ascorbic acid; PPD; Biosensor; Interference; Polymer; Selectivity; Chemical sensor; Glutamate; Electrochemical polymerization

The selectivity of glutamate microdisc biosensors coated with poly(o-phenylenediamine) (PPD) as the interference-rejecting layer against ascorbic acid was observed to be very low. Enhancement in the selectivity was noticed when the electropolymerization potential for the polymerization of the o-phen...