2011
Acid-Base Equilibrium of 6-Benzylaminopurine and Its 4-Chloro and 4-Methoxy Derivatives in Water-Ethanol Solutions Studied by Voltammetry and Spectrophotometry
SERRANO, Nuria, Sylvie HOLUBOVÁ a Libuše TRNKOVÁZákladní údaje
Originální název
Acid-Base Equilibrium of 6-Benzylaminopurine and Its 4-Chloro and 4-Methoxy Derivatives in Water-Ethanol Solutions Studied by Voltammetry and Spectrophotometry
Autoři
SERRANO, Nuria (724 Španělsko, domácí), Sylvie HOLUBOVÁ (203 Česká republika, domácí) a Libuše TRNKOVÁ (203 Česká republika, garant, domácí)
Vydání
Electroanalysis, 2011, 1040-0397
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10403 Physical chemistry
Stát vydavatele
Česká republika
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 2.872
Kód RIV
RIV/00216224:14310/11:00053590
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000295143900031
Klíčová slova anglicky
Benzylaminopurines; Water-ethanol solution; Linear sweep voltammetry; Elimination voltammetry with linear scan; Spectrophotometry
Změněno: 12. 4. 2012 10:55, Ing. Andrea Mikešková
Anotace
V originále
The apparent pK(a) values of 6-benzylaminopurine (BAP) and its 4-chloro-6-benzylaminopurine and 4-methoxy-6-benzylaminopurine derivatives were determined in good agreement with voltammetric approaches and with spectrophotometry. Whereas at acidic pH values two overlapped reduction peaks on the mercury electrode were obtained, at more slightly alkaline solutions one reduction signal was measured not only for BAP but also for its derivatives. Furthermore, high scan rates, low ionic strength concentration and a high percentage of the organic solvent cause the best splitting of signals. For the detailed study of such a phenomenon, elimination voltammetry with linear scan (EVLS) was used concluding that the reasons of the peak splitting seem to be related to two different reduction mechanisms that take place on the electrode mainly controlled by adsorption.
Návaznosti
LC06035, projekt VaV |
| ||
MSM0021622412, záměr |
| ||
MUNI/A/0992/2009, interní kód MU |
|