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Current Topics in Electrochemistry   Volumes    Volume 21 
A new method for the determination of antimony
A. Manov√°, E. Beinrohr
Pages: 79 - 82
Number of pages: 4
Current Topics in Electrochemistry
Volume 21 

Copyright © 2019 Research Trends. All rights reserved

The aim of this work is to develop an on-line coupling of electrochemical pre-concentration to atomic absorption spectrometry (AAS) method and the utilization of the developed system for the determination of ultra-trace amounts of Sb in water samples. A flow-through electrochemical analyzer EcaFlow (model GLP 150, Istran, Bratislava) was used as the pre-concentration unit with a two-electrode cell. The working electrode was an RVC electrode coated with gold. An AAS spectrometer SP9 with a graphite furnace atomizer (Pye Unicam) was used to measure the pre-concentrated Sb species. The pre-concentration parameters for the electrochemical process were optimized. Moreover, the determination of Sb by graphite furnace atomic absorption spectrometry (GFAAS) was optimised enabling a direct measurement also from HCl media. The pre-concentration step was optimised and characterised.
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