Manganese dioxide causes spurious gold values in flame atomic-absorption readings from HBr-Br2 digestions
January 1, 1981
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.
Citation Information
| Publication Year | 1981 |
|---|---|
| Title | Manganese dioxide causes spurious gold values in flame atomic-absorption readings from HBr-Br2 digestions |
| Authors | W. L. Campbell |
| Publication Type | Article |
| Publication Subtype | Journal Article |
| Series Title | Journal of Geochemical Exploration |
| Index ID | 70011732 |
| Record Source | USGS Publications Warehouse |