Published 1999 | Version v1
Journal article Metadata-only

Coprecipitation of transuranium elements from alkaline solutions by the method of appearing reagents. 14. Reduction of Np(5) and coprecipitation with Cr(3) hydroxide

Creators

  • 1. RAN, Inst. Fizicheskoj Khimii, Moscow (Russian Federation)

Description

Reduction of Np(5) (2·10-4 mol/l) in NaOH solutions was investigated by spectrophotometric method. Hydrazine nitrate, sodium dithionite, vanadyl sulfate proved to be effective reducing agents. Coprecipitation of microquantities of 237Np(5) + 239Np(5) isotope mixture with chromium hydroxide was studied by radiometric method. Purification coefficient of 1 mol/l NaOH solution from neptunium in the presence of above-named reagents was equal 400 and decreased with NaOH concentration increase

Abstract (Russian)

Спектрофотометрическим методом исследовано восстановление 2·10-4 моль/л Np(5) в растворах NaOH. Эффективными восстановителями оказались нитрат гидразина, дитионит натрия, сульфат ванадила. Радиометрическим методом изучено соосаждение микроколичеств изотопной смеси 237Np(5) + 239Np(5) с гидроксидом хрома. Коэффициент очистки раствора 1 моль/л NaOH от нептуния в присутствии вышеназванных реагентов составил около 400 и уменьшался с ростом концентрации NaOH

Additional details

Additional titles

Original title (Russian)
Соосаждение трансурановых элементов из щелочных растворов методом возникающих реагентов. 14. Восстановление Нп(5) и соосажгение с гидроксидом Cр(3)

Publishing Information

Journal Title
Radiokhimiya
Journal Volume
41
Journal Issue
6
Journal Page Range
p. 516-519
ISSN
0033-8311
CODEN
RADKAU

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
31015861
Subject category
S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
Descriptors DEI
CHEMICAL REACTION KINETICS; CHROMIUM HYDROXIDES; CONCENTRATION RATIO; COPRECIPITATION; DISTRIBUTION FUNCTIONS; NEPTUNIUM 237; NEPTUNIUM 239; NEPTUNIUM COMPOUNDS; REDUCING AGENTS; REDUCTION; SODIUM HYDROXIDES; TRACE AMOUNTS
Descriptors DEC
ACTINIDE COMPOUNDS; ACTINIDE NUCLEI; ALKALI METAL COMPOUNDS; ALPHA DECAY RADIOISOTOPES; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CHEMICAL REACTIONS; CHROMIUM COMPOUNDS; DAYS LIVING RADIOISOTOPES; HEAVY NUCLEI; HYDROGEN COMPOUNDS; HYDROXIDES; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; KINETICS; NANOSEC LIVING RADIOISOTOPES; NEPTUNIUM ISOTOPES; NUCLEI; ODD-EVEN NUCLEI; OXYGEN COMPOUNDS; PRECIPITATION; RADIOISOTOPES; REACTION KINETICS; SEPARATION PROCESSES; SODIUM COMPOUNDS; SPONTANEOUS FISSION RADIOISOTOPES; TRANSITION ELEMENT COMPOUNDS; TRANSURANIUM COMPOUNDS; YEARS LIVING RADIOISOTOPES

Optional Information

Notes
5 refs., 4 figs., 4 tabs.