diplomsko delo
Klara Kočevar (Author), Drago Kočar (Mentor)

Abstract

V treh vzorcih vin sem z atomsko absorpcijsko in atomsko emisijsko spektroskopijo določevala koncentracije bakra, železa, natrija in kalija. Vzorca 1 in 3 sta bila vzorca belega vina, vzorec 2 pa je bil rdeče vino. Ugotavljala sem vpliv matrice oziroma topila na določitev kovin z eksternim standardom in s standardnim dodatkom. Primerjala sem določitve v deionizirani vodi, 10% etanolu, 1% HNO3 in 1% HCl. Ugotovila sem, da se rezultati v različnih topilih in vrstah vin razlikujejo, kar je lahko posledica vpliva matrice na določevanje. Koncentracije določene z metodama AAS in AES so primerljive.

Keywords

analizna kemija;vino;kalij;natrij;železo;baker;analizne metode;atomska absorpcijska spektroskopija;AAS;atomska emisijska spektroskopija;AES;standardni dodatek;diplomska dela;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher: [K. Kočevar]
UDC: 543.42:546.3/.9:663.2(043.2)
COBISS: 1538311363 Link will open in a new window
Views: 939
Downloads: 255
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Other data

Secondary language: English
Secondary abstract: Determination of copper, iron, sodium and potassium in wine samples by atomic absorption and atomic emission spectroscopy in three wine samples. Samples number 1 and number 3 were white wine and sample number 2 was a red wine. To determine the influence of matrix or solvent on the analysis I used external standard calibration and standard addition methods. I also compared concentrations of analytes in deionized water, 10% ethanol, 1% HNO3 and 1% HCl. My results varied in different solvents and types of wine, which may be the consequence of the complex matrix. Concentrations determined by atomic absorption and atomic emission spectroscopy were similar.
Secondary keywords: wine;potassium;sodium;iron;copper;AAS;AES;standard addition;
Type (COBISS): Bachelor thesis/paper
Study programme: 1000373
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, UNI Kemija
Pages: 43 str.
ID: 11215360