STUDIES OF SEPARATION OF ZIRCONIUM AND HAFNIUM AND THEIR MICRODETERMINATION. III. SPECTRPHOTOMETRIC DETERMINATION OF TRACE OF ZIRCONIUM OR HAFNIUM WITH QUERCETIN SULFONATE (in Japanese)
Quercetin sulfonate, which is easily soluble in water, was used as a sensitive reagent for the determination of zircorium or hafnium. The aqueous solution of quercetin sulfonate forms a yellow complex with zircorium or hafrium which has an absorption band with a maximum lying at around 420 m mu wavelength. The favorable conditions for the determination are: the concentration of HCl and quercetin sulfonate is 0.1 to 0.5N and 2 to 3 x 10/sup -4/ mole/l, respectively. The working curves were prepared using the solution of 1 to 30 gamma /50 ml of zirconium or hafrium at 420 to 44 m mu . They follow the Beer's law well. The molar absorbancy index of the zircorium complex is 3.67 x 10/sup 4/ in case the concentration of HCl and quercetin sulfonate is 0.2N and 2.23 x 10/sup -4/ mole/ l, respectively, at 420 m mu ; that of the hafnium complex is almost the same value under the same conditions. The ratio of quercetin sulfonate to zirconium or hafnium in its complex is 1: 1 under the condition. The interference of Fe/ sup 3+/ is removed by the addition of thioglycolic acid solution. (auth)
- Research Organization:
- Tokyo Inst. of Tech.
- NSA Number:
- NSA-15-010893
- OSTI ID:
- 4082947
- Journal Information:
- Nippon Kagaku Zasshi (Japan) Formerly Nippon Kagaku Kaishi (1921- 47) Merged with Kogyo Kagaku Zasshi to form Nippon Kagaku Kaishi, Journal Name: Nippon Kagaku Zasshi (Japan) Formerly Nippon Kagaku Kaishi (1921- 47) Merged with Kogyo Kagaku Zasshi to form Nippon Kagaku Kaishi Vol. Vol: 81; ISSN NPKZA
- Country of Publication:
- Country unknown/Code not available
- Language:
- Japanese
Similar Records
Spectrophotometric Studies of Dioxo-Complexes of Quadrivalent Metals. I. Complexes of Zirconium and Hafnium with Pyrogallolsulfonephthalein
SPECTROPHOTOMETRIC DETERMINATION OF ZIRCONIUM AND HAFNIUM WITH OXINE AND THE APPLICATION TO THE ANALYSIS OF URANIUM