SPECTROPHOTOMETRIC DETERMINATION OF NICKEL BY MINERAL ACID
The spectrophotometric determination of nickel was studied by using various mineral acids such as hydrochloric, perchloric, and sulfuric acid as reagents. The absorption spectra were measured for the cobaltous perchlorate at various concentrations of each acid solution and it was found that the spectra were quite similar in the cases of perchloric acid and sulfuric acid solution. This was attributed to the existence of cobaltous aquo ion. In the hydrochloric acid medium, the spectra were more complicated, showing bathochromic and hyperchromic effects as the increase of the concentration of the hydrochloric acid, and the result was ascribed to the successive formation of chloro-complexes. The calibration curves for cobalt were made at appropriate wavelengths in each acid solution and Beer's law was obeyed-in the range 0.05 to 0.3M. The proposed method for the determination of cobalt is simple in procedure but has a low sensitivity. (auth)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-14-025429
- OSTI ID:
- 4130961
- Journal Information:
- Bull. Inst. Chem. Research, Kyoto Univ., Vol. Vol: 38; Other Information: Orig. Receipt Date: 31-DEC-60
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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