A novel fused-silica capillary dropping mercury electrode with long drop-time and its application on determination of critical micelle concentration

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F11%3A33117300" target="_blank" >RIV/61989592:15310/11:33117300 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.talanta.2010.12.050" target="_blank" >http://dx.doi.org/10.1016/j.talanta.2010.12.050</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.talanta.2010.12.050" target="_blank" >10.1016/j.talanta.2010.12.050</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A novel fused-silica capillary dropping mercury electrode with long drop-time and its application on determination of critical micelle concentration

Popis výsledku v původním jazyce

A novel long drop time mercury electrode has been constructed from common fused-silica capillary (50um I.D., 360um E.D.). Proposed device provides reproducible mercury drops with typical lifetime 40-120 s. The electrode was used for a set of electrocapillary measurements aimed at determination of critical micelle concentration of anionic surfactants by a convection controlled drop-time technique. A critical micelle concentration of sodium dodecyl sulfate 5.6+-0.4mmolL?1 and 4.3+-0.4mmolL?1 were obtainedin 1mmolL?1 and 5mmolL?1 phosphate buffer (pH 7.0), respectively. The values were comparable to those obtained from conductometric measurements under the same conditions (7.0+-0.1mmolL?1 and 5.2+-0.1mmolL?1, respectively) and the difference was explained in accordance with theory of hemi-micelle formation.

Název v anglickém jazyce

A novel fused-silica capillary dropping mercury electrode with long drop-time and its application on determination of critical micelle concentration

Popis výsledku anglicky

A novel long drop time mercury electrode has been constructed from common fused-silica capillary (50um I.D., 360um E.D.). Proposed device provides reproducible mercury drops with typical lifetime 40-120 s. The electrode was used for a set of electrocapillary measurements aimed at determination of critical micelle concentration of anionic surfactants by a convection controlled drop-time technique. A critical micelle concentration of sodium dodecyl sulfate 5.6+-0.4mmolL?1 and 4.3+-0.4mmolL?1 were obtainedin 1mmolL?1 and 5mmolL?1 phosphate buffer (pH 7.0), respectively. The values were comparable to those obtained from conductometric measurements under the same conditions (7.0+-0.1mmolL?1 and 5.2+-0.1mmolL?1, respectively) and the difference was explained in accordance with theory of hemi-micelle formation.

Druh

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

CEP obor

CB - Analytická chemie, separace

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Talanta

ISSN

0039-9140

e-ISSN

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Svazek periodika

84

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

5

Strana od-do

187-191

Kód UT WoS článku

000288342400030

EID výsledku v databázi Scopus

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