Urea sensor based on ion sensitive field effect transistor coated with cross-linked urease-albumin membrane.
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چکیده
منابع مشابه
Development of an Ion Sensitive Field Effect Transistor Based Urea Biosensor with Solid State Reference Systems
Ion sensitive field-effect transistor (ISFET) based urease biosensors with solid state reference systems for single-ended and two-ended differential readout electronics were investigated. The sensing membranes of the biosensors were fabricated with urease immobilized in a conducting polymer-based matrix. The responses of 12.9∼198.1 mV for the urea concentrations of 8∼240 mg/dL reveal that the a...
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In this work, both the static and dynamic behaviors as well as the signal read-out circuits of ISFETs were studied. The standard NMOS structure in conjunction with the insulator-electrolyte capacitor was used to model the ISFET under study. The site-binding theory was incorporated to describe the chemistry occurring at the insulator/electrolyte interface. The mechanism of the threshold voltage ...
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was readily constructed by simple modification of a common FID hydrocarbon monitor, with addition of a commercially available valve oven, switching valve, and timer. This system, except for the adjusted response time, had virtually the same operating specifications as the original hydrocarbon analyzer. Short-term studies indicated the system was practical, reliable, and accurate. Air-monitoring...
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Determination of Atropine in Injection with β-Cyclodextrin Modified Ion Sensitive Field Effect Transistor Sensor
A new atropine drug-FET sensor, which was made of an ISFET (ion sensitive field effect transistor) and a drug sensitive membrane prepared by adding electric active matter to a β-cyclodextrin solution, was developed. The pH influence, selectivity, response curve, reproducibility, stability, response time and life of this sensor were investigated. A preliminary application of the sensor was discu...
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ژورنال
عنوان ژورنال: BUNSEKI KAGAKU
سال: 1984
ISSN: 0525-1931
DOI: 10.2116/bunsekikagaku.33.4_e131