The pH-static enzyme sensor
نویسندگان
چکیده
منابع مشابه
Short Communication THE pH-STATIC ENZYME SENSOR An ISFET-based Enzyme Sensor, Insensitive to the Buffer Capacity of the Sample
Enzyme sensors based on the measurement of pH consist basically of a pH-sensitive electrode to which an enzyme-loaded membrane is attached. The conversion of substrate in the immobilized enzyme membrane results in a local change in pH which can then be measured. The pH-sensitive electrode used is usually a glass membrane electrode or an ISFET. In 1980, Caras and Janata [l] described the first I...
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The development of an optical pH sensor based on immobilization of quinizarin (1,4-dihydroxyanthraquinone) on a triacetylcellulose membrane was described. The resulting membrane exhibited fast color change from yellow to violet, while changing the pH in alkaline region. The immobilized quinizarin showed a broader dynamic range from (pH 9.4-11.4) with respect to free form (pH 8.8-10.4). The sens...
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ژورنال
عنوان ژورنال: Analytica Chimica Acta
سال: 1987
ISSN: 0003-2670
DOI: 10.1016/s0003-2670(00)82807-x