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

Autor:	Rita Dóczi, Zoltán Varga, Z. Szucs, Zita Oláh
Rok vydání:	2015
Předmět:	Daughter Waste management Sanitation Chemistry media_common.quotation_subject Radiochemistry Physical and Theoretical Chemistry media_common
Zdroj:	Radiochimica Acta. 103:871-877
ISSN:	2193-3405 0033-8230
DOI:	10.1515/ract-2015-2387
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3cd01fec6a72c29bb73c1fba895c062f https://doi.org/10.1515/ract-2015-2387 Zobrazit plný text záznamu