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Določevanje kovin v vzorcih vina z atomsko absorpcijsko in atomsko emisijsko spektroskopijo
Kočevar, Klara (Author), Kočar, Drago (Mentor) More about this mentor... This link opens in a new window

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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.

Language:Slovenian
Keywords:Vino, kalij, natrij, železo, baker, AAS, AES, standardni dodatek.
Work type:Bachelor thesis/paper (mb11)
Tipology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Technology
Year:2019
COBISS.SI-ID:1538311363 Link is opened in a new window
Views:502
Downloads:184
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Secondary language

Language:English
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.

Keywords:Wine, potassium, sodium, iron, copper, AAS, AES, standard addition.

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