Spectrophotometric determination of thorium with solochromate fast red
A sensitive and accurate method is described for the spectrophotometric determination of microgram amounts of thorium using the azo dye Solochromate Fast Red. This dyestuff reacts with thorium im hydrochloric acid- methanol solutions to form an oramge complex which shows maximum absorption at 490 m mu . Beer's law is valid over a range from 0.1 to 20 mu g of thorium per ml of measurimg solution. The molar absorptivity of the thorium-dyestuff complex is 13970. Only a very small number of foreign ions interfere; hence, this method can be expected to find general application, as in the determination of thorium in minerals and rocks.
- Research Organization:
- Universitat, Vienna
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-16-002973
- OSTI ID:
- 4832887
- Journal Information:
- Analytical Chemistry, Journal Name: Analytical Chemistry Journal Issue: 13 Vol. 33; ISSN 0003-2700
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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