Polymer membrane-based ion-, gas- and bio-selective potentiometric sensors
نویسندگان
چکیده
منابع مشابه
Polymer membrane-based ion-, gas- and bio-selective potentiometric sensors.
Recent progress in the design of new polymer membrane-based potentiometric ion-, gas- and bio-selective electrodes in chemistry laboratories at the University of Michigan (Ann Arbor) is reviewed. Emphasis is placed on describing the performance of devices for measuring anions (e.g., salicylate, thiocyanate, chloride and heparin) and gases (e.g., ammonia, carbon dioxide and oxygen) in biological...
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A PVC-based membrane of 12-crown-4 exhibits good response for Zn2+ in a wide concentration range (7.08 10-5-1.00 10-1 M) with a non-nernstian slope of 20.5 mv per decade of concentration of Zn2+. The response time of sensor is <10 s and the membrane can be used for more than 3 months without observing any divergence. In addition, the proposed sensor exhibits very good selectivity for Zn2+ o...
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The possibility of using disposable plastic-carbon potentiometric sensors as enzyme biosensors was examined. Urease enzyme was immobilized on poly(vinyl chloride) based Hor NH4-selective membranes using cellulose acetate. This approach has resulted in a potentiometric response on changing the pH of the solution or NH4 ion content due to an enzymatic reaction that occurs between urease and urea....
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ژورنال
عنوان ژورنال: Biosensors and Bioelectronics
سال: 1993
ISSN: 0956-5663
DOI: 10.1016/0956-5663(93)80041-m