SELECTIVE CHEMICAL SENSOR BASED ON MOLECULARLY IMPRINTED POLYMER TO DETECT ISOBORNEOL IN AQUEOUS SAMPLES

Author(s)

Braga, Guilherme S. ; Lieberzeit, Peter A. ; Fonseca, Fernando J. ; IEEE

• Document type: Journal article
• Source: 2017 ICOCS/IEEE INTERNATIONAL SYMPOSIUM ON OLFACTION AND ELECTRONIC NOSE (ISOEN 2017); v. N/A, p. 3-pg., 2017-01-01.

Abstract

Herein we report the evaluation of selectivity of previously developed chemical sensors based on molecularly imprinted polymers (MIP) and quartz crystal microbalance (QCM) to detect isoborneol (ISO) in aqueous samples. They exhibited high specificity when aqueous samples tainted with interfering molecules, namely 2-methylisoborneol (MIB) and camphor, were analyzed. MIP response for ISO (4 mM) was 2 times higher than for MIB (4 mM) and 4 times higher than for camphor (4 mM). Their response scales linearly with isoborneol concentration and exhibits sensitivity of -245.26 Hz mM(-1) cm(-2) at the active area, with a gradient of -47 Hz mM(-1). Moreover, MIP based sensor theoretical detection limit (LoD) is 0.52 mM. (AU)

• FAPESP's process: 13/19421-6 - Development of molecularly imprinted polymers based sensors to detect MIB and GEO at urban supply water
• Grantee: Guilherme de Souza Braga
• Support Opportunities: Scholarships in Brazil - Post-Doctoral