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@article{954131,
author = {Serrano, Nuria and Holubová, Sylvie and Trnková, Libuše},
article_number = {9},
doi = {http://dx.doi.org/10.1002/elan.201100282},
keywords = {Benzylaminopurines; Water-ethanol solution; Linear sweep voltammetry; Elimination voltammetry with linear scan; Spectrophotometry},
language = {eng},
issn = {1040-0397},
journal = {Electroanalysis},
title = {Acid-Base Equilibrium of 6-Benzylaminopurine and Its 4-Chloro and 4-Methoxy Derivatives in Water-Ethanol Solutions Studied by Voltammetry and Spectrophotometry},
url = {http://apps.webofknowledge.com/full_record.do?product=WOS&search_mode=GeneralSearch&qid=1&SID=V28a5N@aIIL3B5FdpnE&page=1&doc=1},
volume = {23},
year = {2011}
}
TY - JOUR
ID - 954131
AU - Serrano, Nuria - Holubová, Sylvie - Trnková, Libuše
PY - 2011
TI - Acid-Base Equilibrium of 6-Benzylaminopurine and Its 4-Chloro and 4-Methoxy Derivatives in Water-Ethanol Solutions Studied by Voltammetry and Spectrophotometry
JF - Electroanalysis
VL - 23
IS - 9
SP - 2217-2225
EP - 2217-2225
SN - 10400397
KW - Benzylaminopurines
KW - Water-ethanol solution
KW - Linear sweep voltammetry
KW - Elimination voltammetry with linear scan
KW - Spectrophotometry
UR - http://apps.webofknowledge.com/full_record.do?product=WOS&search_mode=GeneralSearch&qid=1&SID=V28a5N@aIIL3B5FdpnE&page=1&doc=1
N2 - 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.
ER -
SERRANO, Nuria, Sylvie HOLUBOVÁ a Libuše TRNKOVÁ. Acid-Base Equilibrium of 6-Benzylaminopurine and Its 4-Chloro and 4-Methoxy Derivatives in Water-Ethanol Solutions Studied by Voltammetry and Spectrophotometry. \textit{Electroanalysis}. 2011, roč.~23, č.~9, s.~2217-2225. ISSN~1040-0397. Dostupné z: https://dx.doi.org/10.1002/elan.201100282.
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