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- W12163566 abstract "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)" @default.
- W12163566 created "2016-06-24" @default.
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- W12163566 date "1959-10-15" @default.
- W12163566 modified "2023-09-26" @default.
- W12163566 title "SPECTROPHOTOMETRIC DETERMINATION OF COBALT IN SODIUM METAL" @default.
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