Download or read book The Spectrophotometric Determination of Cobalt with 2-nitroso-1-naphthol written by and published by . This book was released on 1968 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: A spectrophotometric method is described for the determination of down to 2 ppm of cobalt in silicate materials, steels, alloys, and uranium compounds. The cobalt complex with 2-nitroso-1-naphthol is formed, and extracted into toluene, and the colour of the organic phase is measured. The effect of many elements has been studied, and, where interferences existed, the method has been adapted to overcome them. Coefficients of variation of 1.54 and 1.61 per cent were obtained for the 25 micrograms of cobalt level.