DETERMINATION OF METALLIC IONS BY MEANS OF THEIR OXALATES. XI. ON THE DETERMINATION OF THORIUM IN THE PRESENCE OF ZIRCONIUM (in Japanese)
The oxalate method for the determination of thorium in the presence of zirconium was studied. The reaction between zirconium salts and oxalic acid is so complicated that it has not yet been studied from the point of analytical chemistry. The object of this investigation is first to find the conditions under which zirconium is to be precipitated as oxalate and to establish a method for determination of thorium by using oxalic acid alone in the presence of zircenium. The results showed that thorium can be determined quantitatively in the presence of zirconium when the following conditions are satisfied: (1) The molar ratio of zirconium to thonium is 0.9 or less; (2) the amount of oxalic acid is 20 cc when 0.5N solution is used; (3) the total volume of the solution is 100 to 200 cc; and (4) the time of heating on a water bath is 30 min and that of standing is 1 hr. (auth)
- Research Organization:
- Niigata Univ., Japan
- NSA Number:
- NSA-15-010887
- OSTI ID:
- 4093551
- 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
COLORIMETRIC DETERMINATION OF THORIUM WITH ARSENAZO III IN PRODUCTS CONTAINING NIOBIUM
Size and shape of thorium oxalate crystals as a function of preparation conditions