Measuring total antimony in geothermal waters by flame atomic absorption spectrometry
Journal of Research of the U.S. Geological Survey
By: R. E. Stauffer
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Abstract
A flame atomic absorption procedure utilizing an electrodeless discharge lamp is described for determining total solute antimony in silica-rich geothermal waters. Following NaNO2 oxidation of Sb+3, SbCl5 is extracted from 6 N HCl solution by using MIBK (methyl isobutyl ketone) ; silica in the organic layer is removed by centrifugation. The analytical detection limit for antimony is about 6 micrograms per liter in the original sample; the coefficient of variation is 4 percent at the 250 μg/L Sb level. Comparable total antimony levels were found in sample splits which had been either filtered and acidified (to pH less than 1.5) with HNO3 or left untreated at the time of sample collection.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Measuring total antimony in geothermal waters by flame atomic absorption spectrometry |
| Series title | Journal of Research of the U.S. Geological Survey |
| Volume | 5 |
| Issue | 6 |
| Year Published | 1977 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Description | 3 p. |
| First page | 807 |
| Last page | 809 |
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