✦ LIBER ✦
Liquid/liquid extraction separation of hafnium with amberlite La-1 from zirconium and other elements in citric acid solutions
✍ Scribed by C.P. Vibhute; S.M. Khopkar
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 373 KB
- Volume
- 193
- Category
- Article
- ISSN
- 0003-2670
No coin nor oath required. For personal study only.
✦ Synopsis
Hafnium (10-110 lg ml-l) is quantitatively extracted at pH 4.6 from 0.01 M citric acid with 0.1 M Amberlite LA-1 in xylene; it can be stripped with 0.1 M perchloric acid and determined spectrophotometrically with xylenol orange at 540 nm. Hafnium can be separated from binary and multicomponent mixtures by selective extraction and backextraction. The method is suitable for determining hafnium in zircon.