| Autor: |
Grigor'eva, M. G., Nikitina, S. A., Pevtsova, E. V., Pen'kin, M. V., Stepanov, A. V. |
| Předmět: |
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| Zdroj: |
Radiochemistry; Jul/Aug2003, Vol. 45 Issue 4, p388-393, 6p |
| Abstrakt: |
A spectrophotometric procedure with internal standardization was suggested for precision determination of the concentrations of Th and Pu in the form of colored complexes with arsenazo III in nitric acid solutions. The sensitivity of the method was significantly improved owing to the use of colored complexes. The optical density optimum (0.3-0.5) of the solutions for spectrophotometric measurements can be achieved at concentrations in solution of the element analyzed as low as (2-3) ×10-6 M, at the arsenazo and HNO3 concentrations of 1 ×10-4 and 6 M, respectively. With this composition of the solution, the relative rms deviation of the results for a single run is no greater than 0.15 and 0.3% for thorium and plutonium, respectively. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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