EXTRACTION-PHOTOMETRIC METHOD FOR THE DETERMINATION OF PROTACTINIUM(V) WITH ARSENAZO III (in Russian)
Journal Article
·
· Zhur. Anal. Khim.
OSTI ID:4791455
A sensitive color reaction between Pa(V) and arsenazo III is described. The molar extinction coefficient of solutions of the protactinium-reagent compound at 680 mu is 2.2x 10/sup 4/. An extraction-photometric method for the determination of protactinium with arsenazo III was worked out. The method includes the extraction of the protactinium--arsenazo III complex from 7 N H/sub 2/SO/sub 4/ solutions with isoamyl alcohol, washing the extract with a 0.5 M solution of oxalic acid in 7 N H/sub 2/SO/sub 4/, and measurement of the optical density of the extract. The method permits the determination down to 0.3 gamma of protactinium in 1 ml in the presence of large quantities of Al, Fe, Ni, Mn(II), Cr(III), La, and in the presence of milligram quantities of U(VI), Nb(V), Zr(IV), Th(IV), and other elements. (auth)
- Research Organization:
- Vernadskii Inst. of Geochemistry and Analytical Chemistry, Academy of Sciences, Moscow
- NSA Number:
- NSA-16-028902
- OSTI ID:
- 4791455
- Journal Information:
- Zhur. Anal. Khim., Journal Name: Zhur. Anal. Khim. Vol. Vol: 17
- Country of Publication:
- Country unknown/Code not available
- Language:
- Russian
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