Conductometric Sensor for PAH Detection with Molecularly Imprinted Polymer as Recognition Layer.
SENSORS 2018;
18:s18030767. [PMID:
29510479 PMCID:
PMC5876665 DOI:
10.3390/s18030767]
[Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 02/12/2018] [Accepted: 02/28/2018] [Indexed: 02/06/2023]
Abstract
A conductometric sensor based on screen-printed interdigital gold electrodes on glass substrate coated with molecularly imprinted polyurethane layers was fabricated to detect polycyclic aromatic hydrocarbons (PAHs) in water. The results prove that screen-printed interdigital electrodes are very suitable transducers to fabricate low-cost sensor systems for measuring change in resistance of PAH-imprinted layers while exposing to different PAHs. The sensor showed good selectivity to its templated molecules and high sensitivity with a detection limit of 1.3 nmol/L e.g., for anthracene in water which is lower than WHO’s permissible limit.
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