Published 2002 | Version v1
Journal article Metadata-only

Extraction of Am(III) and rare earth elements from nitric acid solutions by dibutyl(diphenylphosphinylmethyl)phosphonate

Creators

  • 1. Inst. Fiziki Tverdogo Tela RAN, Chernogolovka (Russian Federation)
  • 2. Inst. Problem Tekhnologii Mikroehlektroniki i Osobo Chistykh Materialov RAN, Chernogolovka (Russian Federation)
  • 3. Inst. Fiziologicheski Aktivnykh Veshchestv RAN, Chernogolovka (Russian Federation)

Description

Extraction of nitric acid and microamounts of americium, yttrium, rare earth (R = La-Nd, Sm-Lu) and some other elements (E = Sc, Th, Bi, Zr, Hf, U(VI)) nitrates from HNO3 aqueous solutions by solutions of dibutyl(diphenylphosphinylmethyl)-phosphonate in dichloroethane was studied using the methods of mass spectrometry with inductively bound plasma, potentiometric titration and radiometric analysis. Stoichiometry of extracted solvates was ascertained, effective extraction constants were calculated. It is shown that the extractant studied features a high extractive capacity towards Am(III) and rare earths

Abstract (Russian)

С использованием методов масс-спектрометрии с индуктивно связанной плазмой, потенциометрического титрования и радиометрического анализа изучена экстракция азотной кислоты и микроколичеств нитратов америция, иттрия, редкоземельных элементов (R = La-Nd, Sm-Lu), а также ряда других элементов (E = Sc, Th, Bi, Zr, Hf, U(VI)) из водных растворов HNO3 растворами дибутил(дифенилфосфинилметил)-фосфоната в дихлорэтане. Установлена стехиометрия экстрагируемых сольватов, рассчитаны эффективные константы экстракции. Показано, что изученный экстрагент обладает высокой экстракционной способностью по отношению к Am(III) и редкоземельным элементам

Additional details

Additional titles

Original title (Russian)
Экстракция Ам(III) и редкоземельных элементов дибутил(дифенилфосфинилметил)фосфонатом из азотнокислых растворов

Publishing Information

Journal Title
Radiokhimiya
Journal Volume
44
Journal Issue
2
Journal Page Range
p. 121-125
ISSN
0033-8311
CODEN
RADKAU

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
34067461
Subject category
S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY; S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
AMERICIUM COMPLEXES; AQUEOUS SOLUTIONS; CONCENTRATION RATIO; COORDINATION VALENCES; DISTRIBUTION FUNCTIONS; NITRIC ACID; PHOSPHONIC ACID ESTERS; RARE EARTH COMPLEXES; SOLVENT EXTRACTION; THORIUM COMPLEXES; TRACE AMOUNTS; TRANSITION ELEMENT COMPLEXES; URANIUM COMPLEXES
Descriptors DEC
ACTINIDE COMPLEXES; COMPLEXES; DISPERSIONS; ESTERS; EXTRACTION; FUNCTIONS; HOMOGENEOUS MIXTURES; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; MIXTURES; NITROGEN COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; OXYGEN COMPOUNDS; SEPARATION PROCESSES; SOLUTIONS; TRANSURANIUM COMPLEXES; VALENCE

Optional Information

Notes
23 refs.; 2 tabs.; 6 figs.