Determination of silver, bismuth, cadmium, copper, lead, and zinc in geologic materials by atomic absorption spectrometry with tricaprylylmethylammonium chloride
Analytical Chemistry
By: John G. Viets
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Abstract
Interferences commonly encountered in the determination of silver, bismuth, cadmium, copper, lead, and zinc at crustal abundance levels are effectively eliminated using a rapid, sensitive, organic extraction technique. A potassium chlorate-hydrochloric acid digestion solubilizes the metals not tightly bound in the silicate lattice of rocks, soils, and stream sediments. The six metals are selectively extracted into a 10% Aliquat 336-MIBK organic phase in the presence of ascorbic acid and potassium iodide. Metals in the organic extract are determined by flame atomic absorption spectrometry to the 0.02-ppm level for silver, cadmium, copper, and zinc and to the 0.2-ppm level for bismuth and lead with a maximum relative standard deviation of 18.8% for known reference samples. An additional hydrofluoric acid digestion may be used to determine metals substituted in the silicate lattice.
Suggested Citation
Viets, J.G., 1978, Determination of silver, bismuth, cadmium, copper, lead, and zinc in geologic materials by atomic absorption spectrometry with tricaprylylmethylammonium chloride: Analytical Chemistry, v. 50, no. 8, p. 1097-1101, https://doi.org/10.1021/ac50030a023.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Determination of silver, bismuth, cadmium, copper, lead, and zinc in geologic materials by atomic absorption spectrometry with tricaprylylmethylammonium chloride |
| Series title | Analytical Chemistry |
| DOI | 10.1021/ac50030a023 |
| Volume | 50 |
| Issue | 8 |
| Publication Date | May 01, 2002 |
| Year Published | 1978 |
| Language | English |
| Publisher | ACS Publications |
| Description | 5 p. |
| First page | 1097 |
| Last page | 1101 |