Determination of acid dissociation constants of triazole fungicides by pressure assisted capillary electrophoresis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F15%3A10311985" target="_blank" >RIV/00216208:11310/15:10311985 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388963:_____/15:00446835 RIV/00216208:11510/15:10311985

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.chroma.2015.07.005" target="_blank" >http://dx.doi.org/10.1016/j.chroma.2015.07.005</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.chroma.2015.07.005" target="_blank" >10.1016/j.chroma.2015.07.005</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Determination of acid dissociation constants of triazole fungicides by pressure assisted capillary electrophoresis

Popis výsledku v původním jazyce

Pressure assisted capillary electrophoresis was applied to determination of acid dissociation constants (pK(a)) of six widely used triazole fungicides (cyproconazole, epoxiconazole, flusilazole, tebuconazole, penconazole and propiconazole) in aqueous medium. The pK(a) values were determined from the dependence of effective electrophoretic mobility of the triazole fungicides on p[H+] of the background electrolyte (BGE) using non-linear regression analysis. The p[H+] was used instead of pH to reflect theincreased ionic strength of the strongly acidic BGEs (pH< 1.75) as compared to the BGEs at pH equal to or greater than 1.75. Prior to the pK(a) calculation, the measured effective electrophoretic mobilities were corrected to the reference temperature (25degrees C) and constant ionic strength (25mM). The regression function was modified to allow the determination of pK(a) in the BGEs of varying ionic strength. The electrophoretic measurements showed that the above triazole fungicides are

Název v anglickém jazyce

Determination of acid dissociation constants of triazole fungicides by pressure assisted capillary electrophoresis

Popis výsledku anglicky

Pressure assisted capillary electrophoresis was applied to determination of acid dissociation constants (pK(a)) of six widely used triazole fungicides (cyproconazole, epoxiconazole, flusilazole, tebuconazole, penconazole and propiconazole) in aqueous medium. The pK(a) values were determined from the dependence of effective electrophoretic mobility of the triazole fungicides on p[H+] of the background electrolyte (BGE) using non-linear regression analysis. The p[H+] was used instead of pH to reflect theincreased ionic strength of the strongly acidic BGEs (pH< 1.75) as compared to the BGEs at pH equal to or greater than 1.75. Prior to the pK(a) calculation, the measured effective electrophoretic mobilities were corrected to the reference temperature (25degrees C) and constant ionic strength (25mM). The regression function was modified to allow the determination of pK(a) in the BGEs of varying ionic strength. The electrophoretic measurements showed that the above triazole fungicides are

Druh

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

CEP obor

CB - Analytická chemie, separace

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Journal of Chromatography A

ISSN

0021-9673

e-ISSN

—

Svazek periodika

1408

Číslo periodika v rámci svazku

August

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

243-249

Kód UT WoS článku

000359327100029

EID výsledku v databázi Scopus

2-s2.0-84945984113