Manganese dioxide causes spurious gold values in flame atomic-absorption readings from HBr-Br2 digestions
Journal of Geochemical Exploration
By: W. L. Campbell
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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.
| 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 |
| DOI | 10.1016/0375-6742(81)90090-X |
| Volume | 15 |
| Issue | 1-3 |
| Year Published | 1981 |
| Language | English |
| Publisher | Elsevier |
| Description | 4 p. |
| First page | 613 |
| Last page | 616 |