Determination of indium in geological materials by electrothermal-atomization atomic absorption spectrometry with a tungsten-impregnated graphite furance
Analytica Chimica Acta
By: L. Zhou, T. T. Chao, and A. L. Meier
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Abstract
The sample is fused with lithium metaborate and the melt is dissolved in 15% (v/v) hydrobromic acid. Iron(III) is reduced with ascorbic acid to avoid its coextraction with indium as the bromide into methyl isobutyl ketone. Impregnation of the graphite furnace with sodium tungstate, and the presence of lithium metaborate and ascorbic acid in the reaction medium improve the sensitivity and precision. The limits of determination are 0.025–16 mg kg−1 indium in the sample. For 22 geological reference samples containing more than 0.1 mg kg−1 indium, relative standard deviations ranged from 3.0 to 8.5% (average 5.7%). Recoveries of indium added to various samples ranged from 96.7 to 105.6% (average 100.2%).
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Determination of indium in geological materials by electrothermal-atomization atomic absorption spectrometry with a tungsten-impregnated graphite furance |
| Series title | Analytica Chimica Acta |
| DOI | 10.1016/S0003-2670(00)85809-2 |
| Volume | 161 |
| Issue | C |
| Year Published | 1984 |
| Language | English |
| Publisher | Elsevier |
| Contributing office(s) | Denver Federal Center |
| Description | 5 p. |
| First page | 369 |
| Last page | 373 |
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