DETERMINATION OF ARSENIC AND ANTIMONY IN HIGH-PURITY PHOSPHORIC-ACID BY ATOMIC-ABSORPTION SPECTROMETRY WITH ELECTROTHERMAL ATOMIZATION

Authors
FISERA M HLADKY Z RISOVA J
Citation
M. Fisera et al., DETERMINATION OF ARSENIC AND ANTIMONY IN HIGH-PURITY PHOSPHORIC-ACID BY ATOMIC-ABSORPTION SPECTROMETRY WITH ELECTROTHERMAL ATOMIZATION, Chemicke zvesti, 50(1), 1996, pp. 8-11
Citations number
23
Categorie Soggetti
Chemistry
Journal title
Chemicke zvesti → ACNP
ISSN journal
03666352
Volume
50
Issue
1
Year of publication
1996
Pages
8 - 11
Database
ISI
SICI code
0366-6352(1996)50:1<8:DOAAAI>2.0.ZU;2-M
Abstract
An atomic absorption spectrometric method with electrothermal atomizat ion (AAS-ETA) for the determination of arsenic and antimony in high-pu rity phosphoric acid is described. The determination is based on the r apid generation of arsine and stibine based on reduction with a soluti on of sodium tetrahydroborate, their absorption in a solution of nicke l salt, nitric acid, and bromine, and is suitable for ng g(-1) levels of As and Sb in H3PO4 and other mineral acids.