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Title: ELECTROCHROMATOGRAPHIC AND NEUTRON-ACTIVATION PROCEDURES FOR THE SEPARATION AND ESTIMATION OF THE ALKALI METAL CATIONS

Abstract

Differential electrical migration in electrolytic solutions stabilized in soft paper provides a convenient method for the separation of the alkali metal cations from virtually all the other cations. Under suitable conditions the differential migration also serves to separate the alkali metal ions from one another. This technique is effective with the smallest quantities of the ions that can be detected by the most sensitive tests. The background electrolyte and the solvent determine the effectiveness of the separations. With certain complex- forming electrolytes such as citrate in water, the alkali metal cations are separated from all the complexed polyvalent cations. With other complexforming reagents such as ammonia-triacetic acid (nitrilotriacetic acid) plus cyanide, the alkali metal cations are separated from the polyvalent cations and also from the univalent cations of silver and thallium. In aqueous solutions, lithium, sodium, and potassium ions are readily separated from one another as well as from various complexed species. Potassium, rubidium, and cesium ions are not separated from one another. In nitromethane solution, by contraet, all the alkali metal ions are separated from one another. With radioactive species, the separated ions may be located and estimated in the moist paper. The lithium is not sufficiently radioactive tomore » permit its location or estimation by its activity. It may be located by flame photometry in extracts of the migration system. Sodium and potassium salts are brought to sufficient activity by irradiation with thermal neutrons at a flux of 1 x 10/sup 12/ n/cm/sup 2//sec for about two days before migration. Rubidium and cesium require activation at much higher fluxes (1 x 10/ sup 11/) for longer periods (about 7 days). Active cesium as it occurs in fission products is readily separated from the active species of various other elements as well as from the other alkali metal cations. It may also be estimated after decay of activated sodium, potassium, and rubidium ions produced by activation of mixtures of these elements. (JAIF)« less

Authors:
Publication Date:
Research Org.:
Argonne National Lab., Ill.
OSTI Identifier:
4683836
NSA Number:
NSA-17-029955
Resource Type:
Journal Article
Journal Name:
Proc. Japan Conf. Radioisotopes
Additional Journal Information:
Journal Volume: Vol: 4th; Other Information: Orig. Receipt Date: 31-DEC-63
Country of Publication:
Country unknown/Code not available
Language:
English
Subject:
GENERAL AND MISCELLANEOUS; ACETIC ACID; ACTIVATION; ACTIVATION ANALYSIS; ALKALI METALS; AMMONIA; BACKGROUND; CATIONS; CESIUM; CHROMATOGRAPHY; CITRIC ACID; CYANIDES; DECAY; ELECTROLYTES; FISSION PRODUCTS; LITHIUM; METHANE; MOTION; NEUTRON FLUX; NEUTRONS; PAPER; PHOTOMETRY; POTASSIUM; RADIOACTIVITY; RUBIDIUM; SALTS; SENSITIVITY; SEPARATION PROCESSES; SILVER; SODIUM; SOLUTIONS; SOLVENTS; TESTING; THALLIUM; WATER

Citation Formats

Strain, H H. ELECTROCHROMATOGRAPHIC AND NEUTRON-ACTIVATION PROCEDURES FOR THE SEPARATION AND ESTIMATION OF THE ALKALI METAL CATIONS. Country unknown/Code not available: N. p., 1961. Web.
Strain, H H. ELECTROCHROMATOGRAPHIC AND NEUTRON-ACTIVATION PROCEDURES FOR THE SEPARATION AND ESTIMATION OF THE ALKALI METAL CATIONS. Country unknown/Code not available.
Strain, H H. Sun . "ELECTROCHROMATOGRAPHIC AND NEUTRON-ACTIVATION PROCEDURES FOR THE SEPARATION AND ESTIMATION OF THE ALKALI METAL CATIONS". Country unknown/Code not available.
@article{osti_4683836,
title = {ELECTROCHROMATOGRAPHIC AND NEUTRON-ACTIVATION PROCEDURES FOR THE SEPARATION AND ESTIMATION OF THE ALKALI METAL CATIONS},
author = {Strain, H H},
abstractNote = {Differential electrical migration in electrolytic solutions stabilized in soft paper provides a convenient method for the separation of the alkali metal cations from virtually all the other cations. Under suitable conditions the differential migration also serves to separate the alkali metal ions from one another. This technique is effective with the smallest quantities of the ions that can be detected by the most sensitive tests. The background electrolyte and the solvent determine the effectiveness of the separations. With certain complex- forming electrolytes such as citrate in water, the alkali metal cations are separated from all the complexed polyvalent cations. With other complexforming reagents such as ammonia-triacetic acid (nitrilotriacetic acid) plus cyanide, the alkali metal cations are separated from the polyvalent cations and also from the univalent cations of silver and thallium. In aqueous solutions, lithium, sodium, and potassium ions are readily separated from one another as well as from various complexed species. Potassium, rubidium, and cesium ions are not separated from one another. In nitromethane solution, by contraet, all the alkali metal ions are separated from one another. With radioactive species, the separated ions may be located and estimated in the moist paper. The lithium is not sufficiently radioactive to permit its location or estimation by its activity. It may be located by flame photometry in extracts of the migration system. Sodium and potassium salts are brought to sufficient activity by irradiation with thermal neutrons at a flux of 1 x 10/sup 12/ n/cm/sup 2//sec for about two days before migration. Rubidium and cesium require activation at much higher fluxes (1 x 10/ sup 11/) for longer periods (about 7 days). Active cesium as it occurs in fission products is readily separated from the active species of various other elements as well as from the other alkali metal cations. It may also be estimated after decay of activated sodium, potassium, and rubidium ions produced by activation of mixtures of these elements. (JAIF)},
doi = {},
url = {https://www.osti.gov/biblio/4683836}, journal = {Proc. Japan Conf. Radioisotopes},
number = ,
volume = Vol: 4th,
place = {Country unknown/Code not available},
year = {1961},
month = {1}
}