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Conductometric Sensor for PAH Detection with Molecularly Imprinted Polymer as Recognition Layer
Usman Latif1,2, Liu Ping3, Franz L Dickert4
1Department of Analytical Chemistry, University of Vienna, Währinger Strasse 38, Vienna A-1090, Austria. liupingsjj@sjtu.edu.cn.
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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