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Študij vezave izbranih kovinskih ionov z vinsko kislino
ID Jančigaj, Eva (Author), ID Kočar, Drago (Mentor) More about this mentor... This link opens in a new window

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Abstract
Vinska kislina je organska spojina, ki jo pogosto najdemo v naravi v obliki same vinske kisline, hidrogentartrata in tartrata. Uporabljamo jo kot kiralno molekulo pri ločevanju, kot izhodno molekulo za tvorbo novih kiralnih molekul, v živilski, farmacevtski in kozmetični industriji. Kislina ima dve hidroksilni in dve karboksilni skupini, prek katerih lahko tvori komplekse z večkrat nabitimi ioni, kot sta tudi železov(III) in bakrov(II) ion. Namen magistrskega dela je bil ugotoviti, pri katerih pH pride do tvorbe kompleksov in kakšna je njihova stehiometrija. Vse to sem ugotavljala s pomočjo Jobove metode in ciklične voltametrije. Pripravila sem raztopine pri pH 1 (samo pri ciklični voltametriji), 3, 5 in 7 ter posnela njihove UV-VIS spektre in ciklične voltamograme. Iz rezultatov sem določila konstante stabilnosti in jih primerjala s teoretičnimi.

Language:Slovenian
Keywords:železov(III) tartrat, bakrov(II) tartrat, vinska kislina, spektrofotometrija, ciklična voltametrija
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Technology
Year:2022
PID:20.500.12556/RUL-141967 This link opens in a new window
COBISS.SI-ID:132095747 This link opens in a new window
Publication date in RUL:13.10.2022
Views:786
Downloads:82
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Secondary language

Language:English
Title:Study of binding of selected metal ions with tartaric acid
Abstract:
Tartaric acid is an organic compound often found in nature in the form of tartaric acid, hydrogentartrate and tartrate. It is used as a chiral acid for racemic resolution and as a starting material for organic synthesis of new chiral compounds. It can often be used in pharmaceutical, cosmetic and food industry as well. Tartaric acid contains two hydroxyl and two carboxylic functional groups through which it can form coordinate compounds with multiply-charged ions such as iron(III) and copper(II) ion. The goal of the master's thesis was to determine the stoichiometry and the pH values of solutions in which coordinate compounds can be formed. This was done using the Job's method and cyclic voltammetry. Solutions of pH 1 (only for cyclic voltammetry), 3, 5 and 7 were prepared and the corresponding UV-VIS spectra and cyclic voltammograms were scanned. Out of all collected data stability constants were calculated and compared to theoretical values.

Keywords:iron(III) tartrate, copper(II) tartrate, tartaric acid, spectrophotometry, cyclic voltammetry

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