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|Title: ||SEPARATION OF NIOBIUM AND TANTALUM BY EXTRACTION CHROMATOGRAPHY WITH BIS(2-ETHYLHEXYL)PHOSPHORIC ACID|
|Authors: ||VIN, YY|
|Keywords: ||di(2-ethylhexyl) phosphoric-acid|
|Issue Date: ||1991|
|Publisher: ||ELSEVIER SCIENCE BV|
|Citation: ||TALANTA, 38(9), 971-975|
|Abstract: ||A novel method is developed for the reversed-phase extractive chromatographic separation of niobium and tantalum with bis(2-ethylhexyl)phosphoric acid. Niobium is extracted from 1-10M hydrochloric acid and can be stripped with 3M sulphuric acid containing 2% hydrogen peroxide. Tantalum is extracted from 0.1-2M hydrochloric acid and can be stripped with 0.1M hydrochloric acid containing 2M tartaric acid. It is possible to separate niobium and tantalum, in different ratios, from multicomponent mixtures.|
|Appears in Collections:||Article|
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