Non-obvious Problems in Clark Electrode Application at Elevated Temperature and Ways of Their Elimination
Joint Authors
Leshchenko, D. V.
Belyakova, M. B.
Miniaev, M. V.
Kostiuk, N. V.
Fedotova, T. A.
Source
Journal of Analytical Methods in Chemistry
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-08-04
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Well-known cause of frequent failures of closed oxygen sensors is the appearance of gas bubbles in the electrolyte.
The problem is traditionally associated with insufficient sealing of the sensor that is not always true.
Study of a typical temperature regime of measurement system based on Clark sensor showed that spontaneous release of the gas phase is a natural effect caused by periodic warming of the sensor to a temperature of the test liquid.
The warming of the sensor together with the incubation medium causes oversaturation of electrolyte by dissolved gases and the allocation of gas bubbles.
The lower rate of sensor heating in comparison with the medium reduces but does not eliminate the manifestation of this effect.
It is experimentally established, that with each cycle of heating of measuring system up to 37°C followed by cooling the volume of gas phase in the electrolyte (KCl; 60 g/L; 400 μL) increased by 0.6 μL approximately.
Thus, during just several cycles it can dramatically degrade the characteristics of the sensor.
A method was developed in which the oxygen sensor is heated in contact with the liquid, (depleted of dissolved gases), allowing complete exclusion of the above-mentioned effect.
American Psychological Association (APA)
Miniaev, M. V.& Belyakova, M. B.& Kostiuk, N. V.& Leshchenko, D. V.& Fedotova, T. A.. 2013. Non-obvious Problems in Clark Electrode Application at Elevated Temperature and Ways of Their Elimination. Journal of Analytical Methods in Chemistry،Vol. 2013, no. 2013, pp.1-8.
https://search.emarefa.net/detail/BIM-457333
Modern Language Association (MLA)
Miniaev, M. V.…[et al.]. Non-obvious Problems in Clark Electrode Application at Elevated Temperature and Ways of Their Elimination. Journal of Analytical Methods in Chemistry No. 2013 (2013), pp.1-8.
https://search.emarefa.net/detail/BIM-457333
American Medical Association (AMA)
Miniaev, M. V.& Belyakova, M. B.& Kostiuk, N. V.& Leshchenko, D. V.& Fedotova, T. A.. Non-obvious Problems in Clark Electrode Application at Elevated Temperature and Ways of Their Elimination. Journal of Analytical Methods in Chemistry. 2013. Vol. 2013, no. 2013, pp.1-8.
https://search.emarefa.net/detail/BIM-457333
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-457333