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

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

<a href="/cs/project/GA104%2F09%2F1810" target="_blank" >GA104/09/1810: Mechanismus přestupu hmoty mezi plynem a kapalinou. Vliv difuzivity a tuhých mikro- a nano- částic.</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

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

Název periodika

Chemical Engineering Science

ISSN

0009-2509

e-ISSN

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Svazek periodika

64

Číslo periodika v rámci svazku

18

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

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Kód UT WoS článku

000271298800006

EID výsledku v databázi Scopus

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