Login for students

Login for employees

Publication detail

Determination of Chromium in Chloride-containing matrix using Zeeman ET AAS
Authors: Dvorský Milan | Černohorský Tomáš | Krejčová Anna
Year: 2004
Type of publication: článek ve sborníku
Name of source: Book of Abstract - XVIIth Slovak Spectroscopis Conference, 5.-9.9.2004, Tatranské Zruby
Publisher name: Technická univerzita v Košiciach
Place: Košice
Page from-to: 59
Titles:
Language Name Abstract Keywords
cze Stanovení chromu v prostředí obsahující chloridy použitím Zeeman ET AAS Stanovení chromu v prostředí obsahující chloridy použitím Zeeman ET AAS ET AAS, Zeeman background correction, variable magnetic field, modifiers, chromium
eng Determination of Chromium in Chloride-containing matrix using Zeeman ET AAS Chromium was determined in chloride matrix by the electrothermal atomic absorption spectrometry (ET AAS) using transversally heated graphite atomizer (THGA) and Zeeman effect background correction. The optimisation of temperature program was performed with chromium solution contained 0,5 % (w/v) NaCl and 10 % (v/v) HNO3, which is typical matrix of digested instant soups and supplements. The effect of concentration and type of modifier (ascorbic acid, NH4NO3, Li, NH4H2PO4, Pd, Rh and V) on the behaviour of chromium was tested. For each modifier used, a magnetic field strength was also optimised and strong dependence was observed for Pd and especially Rh modifier. A high efficiency of thermal stabilization and excellent sensitivity with Pd and Rh modifier were obtained even thought relatively low concentration of modifiers were used (125 mg.l-1 Pd and 62.5 mg.l-1 of Rh). The characteristic mass was evaluated for NH4NO3 1,7 pg, V 1,7 pg, Pd 1,0 pg and even Rh 0,9 pg. The methods were recommended for the determination of chromium in digested samples containing high concentration chloride matrix e.g. instant soups and supplements. ET AAS, Zeeman background correction, variable magnetic field, modifiers, chromium

Departments

Other Parts

Map

en.mapy.cz

Services

Popular Links

© 2023 University of Pardubice, Studentská 95, 532 10 Pardubice 2
Phone: +420 466 036 111, 466 036 112, 466 036 113
Webmaster, RSS
Data box ID: f5vj9hu
Accessibility Statement
CC BY-NC-ND 4.0