Title
Uticaj dijamagnetnih dvovalentnih jona metala na autooksidaciju vicinalnih trihidroksilnih fenolnih jedinjenja u vodenim rastvorima : doktorska disertacija
Creator
Veselinović, Aleksandar M. 1978-
Copyright date
2014
Object Links
Select license
Autorstvo-Nekomercijalno-Bez prerade 3.0 Srbija (CC BY-NC-ND 3.0)
License description
Dozvoljavate samo preuzimanje i distribuciju dela, ako/dok se pravilno naznačava ime autora, bez ikakvih promena dela i bez prava komercijalnog korišćenja dela. Ova licenca je najstroža CC licenca. Osnovni opis Licence: http://creativecommons.org/licenses/by-nc-nd/3.0/rs/deed.sr_LATN. Sadržaj ugovora u celini: http://creativecommons.org/licenses/by-nc-nd/3.0/rs/legalcode.sr-Latn
Language
Serbian
Cobiss-ID
Theses Type
Doktorska disertacija
Other responsibilities
mentor
Nikolić, Goran M. 1966-
član komisije
Nikolić, Ružica 1951-
član komisije
Kostić, Danijela 1969-
član komisije
Nikolić, Vesna 1965-
član komisije
Živković, Jelena 1971-
Academic Expertise
Prirodno-matematičke nauke
Academic Title
-
University
Univerzitet u Nišu
Faculty
Prirodno-matematički fakultet
Group
Odsek za hemiju
Title translated
The influence of divalent diamagnetic metal ions on vicinal trihydroxy phenolic compounds autoxidation in aqueous solutions
Publisher
Niš : [A. M. Veselinović]
Format
PDF/A (183 lista)
description
Umnoženo za odbranu.
Univerzitet u Nišu, Prirodno-matematički fakultet, Departman za hemiju, 2014.
Bibliografija: listovi 166-168.
Summary.
Abstract (en)
In this dissertation the influence of divalent diamagnetic
metal ions (Mg(II), Ca(II), Sr(II), Ba(II), Zn(II), Cd(II) and Pb(II))
on vicinal trihydroxy phenolic compounds autoxidation in
aqueous solutions was examined. Autoxidation processes of
pyrogallol (the simplest compound with appropriate structure),
gallic acid and ethyl gallate were studied with the application of
UV/Vis spectrophotometry with chemometric data processing,
EPR spectroscopy, High-performance liquid chromatography
(HPLC) and Mass spectrometry (ESI-MS).
It was determined that pH value of solution and
presence and type of diamagentic metal ions have great
influence on investigated compounds autoxidation processes
rates and mechanism. With the aid of applied techniques the
structures of transition free radical species and stable
autoxidation processes products were determined.
Obtained results enabled better understanding of
investigated compounds autoxidation processes which is of
great importance since gallic acid is found in many plants,
while ethyl gallate is used as an antioxidant in food.
Authors Key words
Vodeni rastvori, pirogalol, galna kiselina, etil-galat
Authors Key words
autoxidation, pyrogallol, gallic acid, ethyl-gallate,
diamagnetic metal ions
Subject
54
Type
Elektronska teza
Abstract (en)
In this dissertation the influence of divalent diamagnetic
metal ions (Mg(II), Ca(II), Sr(II), Ba(II), Zn(II), Cd(II) and Pb(II))
on vicinal trihydroxy phenolic compounds autoxidation in
aqueous solutions was examined. Autoxidation processes of
pyrogallol (the simplest compound with appropriate structure),
gallic acid and ethyl gallate were studied with the application of
UV/Vis spectrophotometry with chemometric data processing,
EPR spectroscopy, High-performance liquid chromatography
(HPLC) and Mass spectrometry (ESI-MS).
It was determined that pH value of solution and
presence and type of diamagentic metal ions have great
influence on investigated compounds autoxidation processes
rates and mechanism. With the aid of applied techniques the
structures of transition free radical species and stable
autoxidation processes products were determined.
Obtained results enabled better understanding of
investigated compounds autoxidation processes which is of
great importance since gallic acid is found in many plants,
while ethyl gallate is used as an antioxidant in food.
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