Oxygen sensing sensor

Some examples of common materials developed for oxygen sensing are given in Table 1. The top part of Table 1 describes general purpose sensors, while the bottom part is concerned with specialized PtOEPK-PS based sensors developed for food packaging. 

M.H. Schoenfisch, K.A. Mowery, M.V. Rader, N. Baliga, J.A. Wahr, and M.E. Meyerhoff, Improving the thromboresistivity of chemical sensors via nitric oxide release fabrication and in vivo evaluation of NO-releasing oxygen-sensing catheters. Anal. Chem. 72, 1119—1126 (2000). 

I. Klimant and M. J. P. Leiner, Recent investigations in optical oxygen sensing The behavior of ruthenium complexes in silicone matrices, in Abstracts, 1st European Conference on Optical Chemical Sensors and Biosensors, Graz, Austria, April 12-15, 131 (1992). 

Such stabilized zirconia sensor devices are widely used for combustion control in automobiles. All new cars sold in the US contain one of these devices in the exhaust system to sense the partial pressure of oxygen. This sensor is a key component... 

Current research and development efforts have focused on the use of more biocompatible coatings to reduce the biological response of both intravascular and subcutaneous devices. These efforts are based on the expectation that such developments wfllbe critical to the ultimate success in developing implanted sensors that yield continuous analytical results that match closely with conventional in vitro test methods. One new approach in this direction employs novel nitric oxide (NO) release polymers to coat the surface of intravascular sensors.The potent antiplatelet activity of NO has been shown to greatly reduce the formation of thrombus on the surface of implantable electrochemical oxygen sensing catheters, and yield much more accurate continuous PO2 values in animal experiments. 

Andreescu et al. introduced a 96-electrode well-type device enabling oxygen sensing for monitoring respiratory activity of biological cells.65 65 The principal set-up of the multichannel dissolved oxygen sensor system (DOX-96) is schematically in shown in Fig. 14.13. This highly parallelized approach shows successful... 

With regard to in vivo gas-sensing devices, the majority of the work reported to date has involved oxygen-sensitive devices which operate as an electrolytic, not galvanic, type of electrochemical cell (i.e., current measured, not potential). Since such oxygen-sensing catheters are not based on ISEs, they will not be considered in this review. There has been, however, some limited work concerning the development of potentiometric sensors, particularly for in vivo COg measurements. One approach has been to devise... 

Zhuiykov, S., Microstructure characterisation and oxygen sensing properties of AljOj—ZrOj—Y2O3 shaped eutectic composites. Sensors and Materials 12 (2000) 117-132. 

The oxygen-sensing properties of sensors based on the AljOj-ZrOj-YjOj eutectic composites and polycrystalline zirconia sensors with the same Y2O3 concentration in the electrolyte were also investigated [53]. All tests were carried out using nitrogen as a carrier gas. In all measurements, the airflow rate was -100 cmVmin. The oxygensensing properties of sensors based on the polycrystalline AljOj-ZrOj-YjOj solid electrolyte were shown for comparison. 

Enzyme immunoelectrodes involve the spatial coupling of the sensor, the immunocomplex, and the catalytic amplification by indicator enzymes. Like the sensor systems described above, enzyme immunoelectrodes are based on common principles of EIA. The choice of enzymes for EIA is rather restricted and is further diminished when electrodes are to be used for detection. So far only GOD, catalase, and HRP have been combined with oxygen-sensing polarographic sensors. An overview of enzyme immunoelectrodes is given in Table 21. 

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