caa a22 4500 463218906 CHVBK 20180405153206.0 cr unu---uuuuu 170326e20070901xx s 000 0 eng 10.1134/S1061934807090146 doi (NATIONALLICENCE)springer-10.1134/S1061934807090146 A solid-state pH transducer fabricated from a self-plasticized methacrylic-acrylic membrane for potentiometric acetylcholine chloride biosensor [Elektronische Daten] [L. Peng, L. Heng, S. Hasbullah, M. Ahmad] A solid-state pH sensor based on a self-plasticizing film of methacrylic-acrylic copolymer was developed. The sensor was able to detect changes in pH after tridodecylamine ionophore was immobilized together with a lipophilic anionic salt. The pH sensor exhibited almost a Nemstian response (57.6 mV pH−1) with a linear pH response range of 6-10. It demonstrated a fast response (<2 min) to changes in pH and good selectivity against other common cations such as sodium, potassium, magnesium, lithium, and calcium. The sensor has a shelf life of at least 30 days without an obvious deterioration in response. By depositing a layer of poly(hydroxylethymethacrylate) immobilized with enzyme acetylcholinesterase on top of the pH selective methacrylic-acrylic film, the pH sensor was able to detect acetylcholine chloride (AChCl). The linear response range of the potentiometric biosensor to AChCl was dependent on the buffer concentrations used, and for a buffer concentration less than 1 mM, the linear response range obtained was 3.98-31.62 μM. Pleiades Publishing, Ltd., 2007 Peng L. School of Chemical Sciences and Food Technology, Faculty Science and Technology, University Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia aut Heng L. School of Chemical Sciences and Food Technology, Faculty Science and Technology, University Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia aut Hasbullah S. School of Chemical Sciences and Food Technology, Faculty Science and Technology, University Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia aut Ahmad M. School of Chemical Sciences and Food Technology, Faculty Science and Technology, University Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia aut Journal of Analytical Chemistry Nauka/Interperiodica 62/9(2007-09-01), 884-888 1061-9348 62:9<884 2007 62 10809 https://doi.org/10.1134/S1061934807090146 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S1061934807090146 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Peng L. School of Chemical Sciences and Food Technology, Faculty Science and Technology, University Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia aut NATIONALLICENCE 700 1- Heng L. School of Chemical Sciences and Food Technology, Faculty Science and Technology, University Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia aut NATIONALLICENCE 700 1- Hasbullah S. School of Chemical Sciences and Food Technology, Faculty Science and Technology, University Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia aut NATIONALLICENCE 700 1- Ahmad M. School of Chemical Sciences and Food Technology, Faculty Science and Technology, University Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia aut NATIONALLICENCE 773 0- Journal of Analytical Chemistry Nauka/Interperiodica 62/9(2007-09-01), 884-888 1061-9348 62:9<884 2007 62 10809 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer