Biomedical oxygen sensors

A variety of optical oxygen sensor systems have been developed for applications such as biomedical, environmental and process control . But very few of them have been critically assessed for their suitability for food packaging applications. It has been proven that substantial development, optimization and redesign of the oxygen-sensitive materials and fabrication processes are required for the oxygen sensors to match practical requirements for these applications5. In particular, specific requirements of food applications are ... 

Xu W, Schmidt R, Whaley M, Demas J N, DeGraff B A, Karikari E K and Farmer B L 1995 Oxygen sensors based on luminescence quenching interactions of pyrene with the polymer supports Anal. Chem. 67 3172-80 Peterson J I, Goldstein S R, Fitzgerald R V and Buckhold D K 1980 Fiber optic pH probe for physiological use Anal. Chem. 52 864-9 Peterson J 1 and Vurek G 1984 Fiber-optic sensors for biomedical applications Science 123 123-7... 

PROPERTIES OF SPECIAL INTEREST Film-forming elastomers, potential oxygen sensors for biomedical and aerospace are among this class of poly(thionylphosphazenes) depending upon substituents present. ... 

For special investigations in biomedical research miniaturized amperometric oxygen sensors have been developed. At the sensor shown in Fig. 7 the diameter of the ft cathode is only 30 pm. The resulting limited current of such a sensor is in the range Id — nA at the oxygen partial pressure = 21 kPa. 

Amperometry, Fig. 7 Miniaturized membrane-covered electrochemical oxygen sensor for biomedical investigations in small measuring volumes... 

Ertefai, S., Gough, D. A. (1989). Physiological preparation for studying the response of subcutaneously implanted glucose and oxygen sensors (Translated from Enghsh). Journal of Biomedical Engineering, 11(5), 362-368 (in eng). 

Merilainen, P. T., Sensors for Oxygen analysis Paramagnetic, electrochemical, polarographic, and zirconium oxide technologies in Biomedical Instrumentation A Tbchnology, Nov./Dec 1989, 462-466. 

Fig. I LIT A dissolved-oxygen electrode used to monitor conjunctival oxygen. The sensor is positioned under the patient s eyelid. (Courtesy Biomedical Sensors Ltd.)...

The most commonly used biomedical sensors are the dissolved oxygen p02 and pH electrodes, although enzyme electrodes for glucose and penicillin are becoming more widely accepted. 

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