SPECTROPHOTOMETRIC DETERMINATION OF COBALT IN SODIUM METAL
Technical Report
·
OSTI ID:4198679
A colorimetric method, using 2-nitroso-1-naphthol, is outlined for determining cobalt in sodium metal, which is used as a coolant in nuclear reactors. The sodium metal is reacted with water, neutralized with hydrochloric acid, and the cobalt content determined; the cobalt nitrosonaphtholate is extracted with carbon tetrachloride and the absorbance is measured at 535 m mu . Chloride ion is requisite for the extraction of the cobalt complex in dilute solutions. Lithium and potassium, as well as sodium, have no effect. Ammonium ions have an adverse effect. As little as 0.1 ppm cobalt can be determined in sodium metal. In order to determine cobalt in the fractional ppm range, 10 gra of sample are used. The molar extinction coefficient is 11,780. (auth)
- Research Organization:
- Atomics International Div., North American Aviation, Inc., Canoga Park, Calif.
- DOE Contract Number:
- AT(11-1)-GEN-8
- NSA Number:
- NSA-14-000171
- OSTI ID:
- 4198679
- Report Number(s):
- NAA-SR-4005
- Country of Publication:
- United States
- Language:
- English
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Thu Aug 27 00:00:00 EDT 1959
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OSTI ID:4206544
Spectrophotometric determination of cobalt(II) in the presence of the cobalt(III) coordination compound 2-(5-cyanotetrazolato)pentaamminecobalt(III) perchlorate
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Sun Nov 30 23:00:00 EST 1980
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OSTI ID:6699915