PREPARATION OF STANDARD RADIUM SOLUTIONS FROM RUMANIAN NATURAL SOURCES
Journal Article
·
· Acad. rep. populare Romine, Inst. fiz. atomica IFA/R/7
OSTI ID:4273665
The method of Ra extraction from Rumanian calcareous tuffs is described. A weighed sample of tuff is dissolved in HCl, and Ba chromate is precipitated from the solution at pH7. An addition of Fe producing hydroxide furthers the precipithtion. The precipitate is washed and dissolved in HCl. Ba sulfate is precipitated by H/sub 2/SO/sub 4/, washed and calcined with alkali metal carbonates, washed with water, and dissolved in HCl. To eliminate all the traces of Fe, it is precipitated with ammonia. Ba and Ra are precipitated by the addition of (NH/sub 4/)/sub 2/O/sub 3/, washed and dissolved in HCl. Two standard sohutions each containing 4 x 10/sup -12/ g of Ra were obtained of 1 kg of tuff.
- Research Organization:
- Academy of Sciences of Rumania
- NSA Number:
- NSA-13-009798
- OSTI ID:
- 4273665
- Journal Information:
- Acad. rep. populare Romine, Inst. fiz. atomica IFA/R/7, Journal Name: Acad. rep. populare Romine, Inst. fiz. atomica IFA/R/7
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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