✦ LIBER ✦
Flotation-spectrophotometric determination of praseodymium with 5,7-dichloroquinolin-8-ol and Rhodamine 6G
✍ Scribed by V. Bhagavathy; T. Prasada Rao; A.D. Damodaran
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 330 KB
- Volume
- 280
- Category
- Article
- ISSN
- 0003-2670
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✦ Synopsis
Praseodymium was determined by reaction with 5,7-dichloroquinolin-8-01 and Rhodamine 6G in a weakly alkaline medium. The flotation of the ion association complex was carried out with hexane, followed by dissolution in acetone for subsequent spectrophotometric determination. The molar absorptivity was 1.83 x lo5 I mol-' cm-' at 530 nm.
Beer's law was obeyed in the range 8-240 pg 1-t praseodymium. Praseodymium in aluminium metal and aluminium salts was determined by the proposed method in conjunction with an ion-exchange separation using Dowex 5OW-X8 cation-exchange resin.