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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
Number of Pages:
4