APPLICATION OF CHLOROPHOSPHONAZO (III) FOR PHOTOMETRIC DETERMINATION OF PENTAVALENT ACTINIDE ELEMENTS. II. DETERMINATION OF PROTACTINIUM

Journal Article · Mon Jan 01 04:00:00 EST 1962 · Radiokhimiya (U.S.S.R.) For English translation see Sov. Radiochem. (Engl. Transl.)

OSTI ID:4719788

Chudinov, E G; Yakovlev, G N

Reaction of protactinium solution 2.99 x 10/sup -4/ M in 0.1 n HCl containing 0.01 M NH/sub 4/F with chlorophosphonazo(III) (3,6-bisSTA(4-chloro-2- phosphonophenyl)azo! -4, 5-dihydroxy2,7-naphthalenedisulfonic acid) resulted in a blue-green compound. The absorption curves of chlorophosphonazo (III) with Pa(V) are constructed and the maximum absorptions for Pa compounds are found at 630 and 688 m . The Pa compound spectrum is closer to the Np(IV) and Th(IV) spectra than to Np(V) and U(VI). The experiments indicate that arsenazo III and chlorophosphonazo III behave identically. (R.V.J.)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-17-019982
• OSTI ID: 4719788
• Journal Information: Radiokhimiya (U.S.S.R.) For English translation see Sov. Radiochem. (Engl. Transl.), Journal Name: Radiokhimiya (U.S.S.R.) For English translation see Sov. Radiochem. (Engl. Transl.) Vol. Vol: 4; ISSN RADKA
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

AMMONIUM COMPOUNDS
CHEMICAL REACTIONS
CHEMISTRY
FLUORIDES
HYDROCHLORIC ACID
PHOTOMETRY
PROTACTINIUM
PROTACTINIUM COMPLEXES
QUANTITATIVE ANALYSIS
SOLUTIONS
SULFONIC ACIDS