Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory-Determination of antimony by automated-hydride atomic absorption spectrophotometry
Open-File Report
93-664
By: G.E. Brown and B.J. McLain
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Abstract
The analysis of natural-water samples for antimony by automated-hydride atomic absorption spectrophotometry is described. Samples are prepared for analysis by addition of potassium and hydrochloric acid followed by an autoclave digestion. After the digestion, potassium iodide and sodium borohydride are added automatically. Antimony hydride (stibine) gas is generated, then swept into a heated quartz cell for determination of antimony by atomic absorption spectrophotometry. Precision and accuracy data are presented. Results obtained on standard reference water samples agree with means established by interlaboratory studies. Spike recoveries for actual samples range from 90 to 114 percent. Replicate analyses of water samples of varying matrices give relative standard deviations from 3 to 10 percent.
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory-Determination of antimony by automated-hydride atomic absorption spectrophotometry |
| Series title | Open-File Report |
| Series number | 93-664 |
| DOI | 10.3133/ofr93664 |
| Year Published | 1994 |
| Language | English |
| Publisher | U.S. Geological Survey : Books and Open-File Reports Section [distributor], |
| Contributing office(s) | National Water Quality Laboratory |
| Description | iv, 17 p. |
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