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2,7-BIS-(4-CHLORO-2-PHOSPHONBENZENE-AZO)-1,8-DIHYDROXYNAPHTHALENE-3,6- DISULPHONIC ACID (CHLOROPHOSPHONAZO)III. A NEW REAGENT FOR THE PHOTOMETRIC DETERMINATION OF URANIUM (in Russian)

Journal Article · · Zhur. Anal. Khim.
OSTI ID:4006090
A new highly sensitive reagent for the photometric determination of U/ sup 6+/-chlorophosphonazo III is suggested. The molar absorptivity for solutions of uranium-reagent compound at 670 m mu is 78600. Due to the high stability of the colored compound formed, it is possible to determine U/sup 6+/ in the presence of large quantities of fluorides, phosphates, and oxalates. Sulfates, tartrates, and ethylenediaminetetraacetic acid do not interfere in any quantities. A method was devised for the direct photometric determination of uranium in zirconium alloys using Na/sub 2/SiF/sub 6/ to eliminate the interference of zirconium. The synthesis of chlorophosphonazo III is described. (auth)
Research Organization:
Vernadskii Inst. of Geochemistry and Analytical Chemistry, Academy of Sciences, Moscow
NSA Number:
NSA-15-019339
OSTI ID:
4006090
Journal Information:
Zhur. Anal. Khim., Journal Name: Zhur. Anal. Khim. Vol. Vol: 16
Country of Publication:
Country unknown/Code not available
Language:
Russian