Abstract
Ra/Ca separation by ion exchange. The objective of this work was to acquire knowledge of the chromatographic behaviour of the alkaline earth cations calcium, barium and radium and the obtention of well-defined alpha spectra of {sup 226} Ra. Three cationic ion exchange resins (Dower 50 W-X8, AG 50W-XB and Merck I) and three complexing agents (ethylenediaminetetraacetic acid, citric acid and tartaric acid) at various pH values have been investigated. The three types of ions are fixed on the resins at pH 4.8; calcium is eluted at pH between 5 and 6 depending on the resin; barium and radium are eluted at pH values from 8 to 11. Radium is also eluted with a 2 M nitric acid solution, from which it can be electrodeposited on a stainless steel disk potassium fluoride as electrolyte at pH 14. The electrolysis is conducted for 18 hours with a current of mA. Under these conditions high resolution alpha spectra were obtained for {sup 226} Ra, which was practically free from radioactive contaminants (Author).
Citation Formats
Flores Mendoza, J.
Ra/Ca separation by ion exchange chromatography.; Separacion Ra/Ca por intercambio ionico..
Mexico: N. p.,
1990.
Web.
Flores Mendoza, J.
Ra/Ca separation by ion exchange chromatography.; Separacion Ra/Ca por intercambio ionico..
Mexico.
Flores Mendoza, J.
1990.
"Ra/Ca separation by ion exchange chromatography.; Separacion Ra/Ca por intercambio ionico."
Mexico.
@misc{etde_10132022,
title = {Ra/Ca separation by ion exchange chromatography.; Separacion Ra/Ca por intercambio ionico.}
author = {Flores Mendoza, J}
abstractNote = {Ra/Ca separation by ion exchange. The objective of this work was to acquire knowledge of the chromatographic behaviour of the alkaline earth cations calcium, barium and radium and the obtention of well-defined alpha spectra of {sup 226} Ra. Three cationic ion exchange resins (Dower 50 W-X8, AG 50W-XB and Merck I) and three complexing agents (ethylenediaminetetraacetic acid, citric acid and tartaric acid) at various pH values have been investigated. The three types of ions are fixed on the resins at pH 4.8; calcium is eluted at pH between 5 and 6 depending on the resin; barium and radium are eluted at pH values from 8 to 11. Radium is also eluted with a 2 M nitric acid solution, from which it can be electrodeposited on a stainless steel disk potassium fluoride as electrolyte at pH 14. The electrolysis is conducted for 18 hours with a current of mA. Under these conditions high resolution alpha spectra were obtained for {sup 226} Ra, which was practically free from radioactive contaminants (Author).}
place = {Mexico}
year = {1990}
month = {Dec}
}
title = {Ra/Ca separation by ion exchange chromatography.; Separacion Ra/Ca por intercambio ionico.}
author = {Flores Mendoza, J}
abstractNote = {Ra/Ca separation by ion exchange. The objective of this work was to acquire knowledge of the chromatographic behaviour of the alkaline earth cations calcium, barium and radium and the obtention of well-defined alpha spectra of {sup 226} Ra. Three cationic ion exchange resins (Dower 50 W-X8, AG 50W-XB and Merck I) and three complexing agents (ethylenediaminetetraacetic acid, citric acid and tartaric acid) at various pH values have been investigated. The three types of ions are fixed on the resins at pH 4.8; calcium is eluted at pH between 5 and 6 depending on the resin; barium and radium are eluted at pH values from 8 to 11. Radium is also eluted with a 2 M nitric acid solution, from which it can be electrodeposited on a stainless steel disk potassium fluoride as electrolyte at pH 14. The electrolysis is conducted for 18 hours with a current of mA. Under these conditions high resolution alpha spectra were obtained for {sup 226} Ra, which was practically free from radioactive contaminants (Author).}
place = {Mexico}
year = {1990}
month = {Dec}
}