Trichloroacetic acid‐imprinted polypyrrole film and its property in piezoelectric quartz crystal microbalance and electrochemical sensors to application for determination of haloacetic acids disinfection by‐product in drinking water |
| |
Authors: | Roongnapa Suedee Wimon Intakong Peter A Lieberzeit Pikul Wanichapichart Pipat Chooto Franz L Dickert |
| |
Affiliation: | 1. Department of Pharmaceutical Chemistry, Molecular Recognition Materials Research Unit, Faculty of Pharmaceutical Sciences, Songkla 90112, Thailand;2. Institute of Analytical Chemistry and Food Chemistry, Vienna University, A‐1090 Vienna, Austria;3. Department of Physics, Faculty of Sciences, Membrane Science and Technology Research Center, Prince of Songkla University, Songkla 90112, Thailand;4. Department of Chemistry, Faculty of Sciences, Prince of Songkla University, Songkla 90112, Thailand |
| |
Abstract: | A molecularly trichloroacetic acid (TCAA) imprinted non‐crosslinked polypyrole (TCAA‐MIPpy) has been successfully prepared and evaluated in its properties for both piezoelectric quartz crystal microbalance (QCM) and electrochemical means of detection, and application of such sensors for determination of haloacetic acid concentrations in water. Haloacetic acid selectivity was demonstrated in gravimetric or in electrochemical sensors via either cyclic voltammetric or inter‐digitated conductometric (IDC) analyses studies upon comparison with nonimprinted polypyrrole and TCAA‐imprinted polypyrrole. The measurement results with all these systems revealed that the prepared molecularly imprinted polymer can recognize TCAA well from structurally similar compounds. The TCAA‐MIPpy incorporated with only the IDC transduction system produced the specific signal for TCAA detection in aqueous environment, which is useful for the quantifying TCAA disinfection by‐product in water. The analytical application for determination of TCAA in real‐life samples was readily achieved with the incorporation of TCAA‐MIPpy in the IDC analysis system, the results revealing the high sensitivity and selectivity of the method. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007 |
| |
Keywords: | molecularly imprinted polymer conducting polymer voltammetry inter‐digitated conductometry quartz crystal microbalance |
|
|