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Manganese dioxide causes spurious gold values in flame atomic-absorption readings from HBr-Br2 digestions

Journal of Geochemical Exploration
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Abstract

False readings, apparently caused by the presence of high concentrations of manganese dioxide, have been observed in our current flame atomic-absorption procedure for the determination of gold. After a hydrobromic acid (HBr)-bromine (Br2) leach, simply heating the sample to boiling to remove excess Br2 prior to extraction with methyl-isobutyl-ketone (MIBK) eliminates these false readings. ?? 1981.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Manganese dioxide causes spurious gold values in flame atomic-absorption readings from HBr-Br2 digestions
Series title Journal of Geochemical Exploration
Volume 15
Issue 1-3
Year Published 1981
Language English
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Journal of Geochemical Exploration
First page 613
Last page 616