Determination of chromium in chloride-containing matrix using et AAS with Zeeman backround corrections and programmable magnetic field strength
ČlánekOtevřený přístuppeer-reviewedpublishedDatum publikování
2006
Vedoucí práce
Oponent
Název časopisu
Název svazku
Vydavatel
Univerzita Pardubice
Abstrakt
An effective method the electrothermal atomic absorption spectrometry (ET AAS) with transversally heated graphite atomizer (THGA), Zeeman effect background correction and Rh modifier was proposed for determination of Cr in chloride matrix. The optimisation of electrothermal program was performed with chromium solution containing 0.5% (w/v) NaCl and 10% (v/v) HNO3 that is a typical matrix of digested instant soups and supplements. The effect of modifier and its concentration on determination of chromium were tested. For each modifier used, a magnetic field strenght was also optimised. The significant dependence was observed for Pd and especially Rh. In spite of the relatively low concentration of modifiers, a high efficiency of thermal stabilization and axcellent sensitivity were obtained for Pd and Rh modifier used. The methods were recommended for the determination of chromium in digested samples containing high concentration chloride matrix e.g. instant soups and supplements.
Rozsah stran
p. 77-91
ISSN
1211-5541
Trvalý odkaz na tento záznam
Projekt
Zdrojový dokument
Scientific papers of the University of Pardubice. Series A, Faculty of Chemical technology. 11(2005)
Vydavatelská verze
Přístup k e-verzi
open access
Název akce
ISBN
Studijní obor
Studijní program
Signatura tištěné verze
47333
Umístění tištěné verze
Univerzitní knihovna (studovna)
Přístup k tištěné verzi
Klíčová slova
ET-AAS, Zeemanova korekce, stanovení chromu