Urea sensor based on an ion-sensitive field effect transistor. IV Determination of urea in human blood.
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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...
متن کاملfabrication of new ion sensitive field effect transistors (isfet) based on modification of junction-fet for analysis of hydronium, potassium and hydrazinium ions
a novel and ultra low cost isfet electrode and measurement system was designed for isfet application and detection of hydronium, hydrazinium and potassium ions. also, a measuring setup containing appropriate circuits, suitable analyzer (advantech board), de noise reduction elements, cooling system and pc was used for controlling the isfet electrode and various characteristic measurements. the t...
An Effect of Pyridoxine on Blood Urea in Human Subjects
In 1942 pyridoxine was related to protein metabolism (1). Since that time this vitamin or a derivative thereof has been described as a component of transaminase (2) and of decarboxylase (3). Pyridoxine has been claimed to be beneficial in the treatment of a variety of diseases. An attempt to produce a deficiency of this vitamin in a human subject failed to give evidence of any significant chang...
متن کاملAn effect of pyridoxine on blood urea in human subjects.
In 1942 pyridoxine was related to protein metabolism (1). Since that time this vitamin or a derivative thereof has been described as a component of transaminase (2) and of decarboxylase (3). Pyridoxine has been claimed to be beneficial in the treatment of a variety of diseases. An attempt to produce a deficiency of this vitamin in a human subject failed to give evidence of any significant chang...
متن کاملIon-sensitive field effect transistor as a pH sensor.
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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ژورنال
عنوان ژورنال: Chemical and Pharmaceutical Bulletin
سال: 1987
ISSN: 0009-2363,1347-5223
DOI: 10.1248/cpb.35.693