Liquid film effect on dynamics of optical oxygen probe. Comparison with polarographic oxygen probes. Diffusion coefficients measuring technique

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F09%3A00021940" target="_blank" >RIV/60461373:22340/09:00021940 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Liquid film effect on dynamics of optical oxygen probe. Comparison with polarographic oxygen probes. Diffusion coefficients measuring technique

Original language description

Transient characteristic of the optical oxygen probe is derived from the basic mechanism which plays a dominant role in the generation of the oxygen probe signal, i.e. unsteady one-directional oxygen diffusion flux into the probe membrane through the liquid film. Liquid film effects on the signal of the optical and the polarographic oxygen probes are compared. Special attention is paid to find properties of membrane minimizing the liquid film effect on the rate of its response. From this point of view,the most suitable material for the optical probe membrane is that one with high diffusivity but low solubility. Thus Silicone, used by optical probe manufacturers in these days, is the least suitable material. When both probes are covered with the same membrane, the response of the polarographic probe is faster and less influenced by the liquid film compared with optical one. From this point of view, the polarographic probe is more suitable for monitoring of fast changing oxygen concentr

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CI - Industrial chemistry and chemical engineering

OECD FORD branch

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Project

<a href="/en/project/GA104%2F09%2F1810" target="_blank" >GA104/09/1810: Mechanism of gas-liquid mass transfer. The effects of diffusivity and solid micro- and nano- particles.</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2009

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Chemical Engineering Science

ISSN

0009-2509

e-ISSN

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Volume of the periodical

64

Issue of the periodical within the volume

18

Country of publishing house

GB - UNITED KINGDOM

Number of pages

11

Pages from-to

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UT code for WoS article

000271298800006

EID of the result in the Scopus database

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