REMARKS ON THE USE OF THE "COPPER SPARK" METHOD FOR THE ANALYSIS OF RADIOACTIVE SOLUTIONS (in German)
Journal Article
·
· Acta Chimica Academiae Scientiarum Hungaricae (Hungary)
OSTI ID:4774683
The spectrographic copper spark'' method, as a convenient process for the determination of traces of impurities in solutions, proved to be particularly suitable for the analysis of the radioactive solutions of I/sup 131/, P/sup 32// and S/sup 35/. Under optimum conditions, the limit of detectability ranges down to 0.05 to 0.1 mu g/ml in extremely dilute solutions. In the presence of amounts of accompanying metals over 50 to 100 mu g/ml, the background intensity rises, leading to a decrease of detection limits. A similar effect is caused by a too strong acidity (particularly in the case of nitric acid). The effect of the following parameters is discussed: the Pre-treatment of copper electrodes, the method of preparation of standard solutions, the technique of transferring and evaporating, respectively, of the solutions etc. Also the influence of the quartz vessel, which protects the electrodes, on the spectrum was investigated. All these parameters play an important role in quantitative determinations and may serve as error sources. To avoid errors, the best method is to precisely carry out the prescriptions for the analysis of samples and standards, respectively. The choice of an adequate composition of standard solutions, together with the technique of transferring and evaporating the solutions are of particular importance. (auth)
- Research Organization:
- Research Inst., Polish Academy of Sciences, Warsaw
- NSA Number:
- NSA-17-000123
- OSTI ID:
- 4774683
- Journal Information:
- Acta Chimica Academiae Scientiarum Hungaricae (Hungary), Journal Name: Acta Chimica Academiae Scientiarum Hungaricae (Hungary) Vol. Vol: 0; ISSN ACASA
- Country of Publication:
- Country unknown/Code not available
- Language:
- German
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