An atomic-absorption method for the determination of gold in large samples of geologic materials
Circular
561
By: Gordon H. VanSickle and Hubert William Lakin
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Abstract
A laboratory method for the determination of gold in large (100-gram) samples has been developed for use in the study of the gold content of placer deposits and of trace amounts of gold in other geologic materials. In this method the sample is digested with bromine and ethyl ether, the gold is extracted into methyl isobutyl ketone, and the determination is made by atomicabsorption spectrophotometry. The lower limit of detection is 0.005 part per million in the sample. The few data obtained so far by this method agree favorably with those obtained by assay and by other atomic-absorption methods. About 25 determinations can be made per man-day.
Suggested Citation
VanSickle, G.H., Lakin, H.W., 1968, An atomic-absorption method for the determination of gold in large samples of geologic materials: U.S. Geological Survey Circular 561, iii, 4 p. ;27 cm., https://doi.org/10.3133/cir561.
ISSN: 2330-5703 (online)
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | An atomic-absorption method for the determination of gold in large samples of geologic materials |
| Series title | Circular |
| Series number | 561 |
| DOI | 10.3133/cir561 |
| Year Published | 1968 |
| Language | ENGLISH |
| Publisher | [U.S. Govt. Print. Off.], |
| Description | iii, 4 p. ;27 cm. |