Naslov
Identification and Estimation of Inorganic Substances in Honey by TLC

Autori
Šoljić, Zvonimir ; Hrestak, Željka ; Horvat, Alka J.M. ; Ukmar, Nikolaj

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
New Achievements in Chromatography / * - Zagreb : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 1992, TLC-6

Skup
New Achievements in Chromatography

Mjesto i datum
Opatija, Hrvatska, 13.10.1992. - 15.10.1992

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
metal ions; TLC; identification; honey

Sažetak
A method for identification of inorganic substances present in honey, which is considered as an environmental pollution monitor, is described. Dissolved residue, after combustion of honey samples, was chromatographeied by TLC on cellulose microcrystaline layers. Wet combustion in presence of HClO4, HNO3 and H2SO4 (residue dissolved in water) and combustion at 550 oC (residue dissolved in HNO3) were tested. The results indicate that dry combustion is preferable and that pH adjustment of the solution applied to the chromatographic plate is necessary. Tests were done on a large number of solvent systems for developing and reagents for detection. The following ions were identified: K+, Na*, Ca2+, Mg2+, Al3+, Fe3+, Cu2+ and phosphate. The chromatograms of honey samples were compared with chromatograms of mentioned elements from synthetic mixture simulating the composition of dissolved residue and the amounts of cations were estimated. The values obtained by TLC were compared with the values obtained by AAS.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA