Development of 77Ge/77As parent-daughter system for periodic removal of 77As for environmental sanitation and biochemical purposes

Zita Oláh, Zoltán Szucs, Z. Varga, Rita Dóczi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A simple method was developed for the separation of radioactive 77As from neutron irradiated natural GeO2 samples for environmental and biochemical studies. The method is based on the volatility of GeCl4. The GeCl4 was co-evaporated from the reaction mixture with an azeotropic mixture of HCl and water, and immediately condensed into a separate finger part of the special glass apparatus which was cooled by liquid nitrogen. By inverting the room temperature and the deep frozen parts of the glass equipment after three half-lives of the 77Ge the separation process can be repetitive, getting a special type of 77Ge/77As parent-daughter system. The radionuclidic purity of the remaining As fraction was found to be 99.95%. Its yield, however, drastically decreased in the second and subsequent separations.

Original languageEnglish
Pages (from-to)871-877
Number of pages7
JournalRadiochimica Acta
Volume103
Issue number12
DOIs
Publication statusPublished - Dec 28 2015

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sanitation
Sanitation
Glass
glass
volatility
Liquid nitrogen
liquid nitrogen
half life
Neutrons
purity
neutrons
Water
room temperature
water
Temperature

Keywords

  • Natural germanium oxide (GeO) target
  • no carrier added (nca) As
  • radiochemical separation
  • reactor production of arsenic isotopes
  • volatilization

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Development of 77Ge/77As parent-daughter system for periodic removal of 77As for environmental sanitation and biochemical purposes. / Oláh, Zita; Szucs, Zoltán; Varga, Z.; Dóczi, Rita.

In: Radiochimica Acta, Vol. 103, No. 12, 28.12.2015, p. 871-877.

Research output: Contribution to journalArticle

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