Substitution of IO3 −, IO4−, SeO3 2−, and SeO42− for CO32− in Na4[UO2(CO3)3]
-
S. Wu
,
A. Simonetti
Summary
Trigonal sodium uranyl carbonate, Na4[UO2 (CO3)3], has been synthesized under hydrothermal conditions, and its incorporation of IO3 −, IO4−, SeO32−, and SeO42− has been investigated. LA-ICP-MS was used to detect the presence and concentration of iodine, selenium, and uranium in single crystals of Na4[UO2(CO3)3], and these in-situ analyses indicate that IO3−, IO4−, SeO32−, and SeO42− have been incorporated into its structure. The proposed mechanisms are the substitution of IO3−, IO4−, SeO32−, and SeO42− for CO32−. The incorporation of iodine oxoanions results in the loss of Na+ cations so as to maintain charge balance; the substitution schemes may be expressed as follows:□+IO3− ↔Na+ + CO32− and □+IO4− ↔Na+ +CO32− (□ = vacancy).
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Artikel in diesem Heft
- Inhalt
- Cross-sections of 45Sc(n, 2n)44m,gSc reaction from the reaction threshold to 20 MeV
- Fast neutron spectrum unfolding of a TRIGA Mark II reactor and measurement of spectrum-averaged cross sections: integral tests of differential cross sections of neutron threshold reactions
- Determination of 234U and 238U in seawater samples by alpha spectrometry after concentration of U(VI) onto hydrotalcite and co-precipitation with LaF3
- Substitution of IO3 −, IO4−, SeO3 2−, and SeO42− for CO32− in Na4[UO2(CO3)3]
- Structure and spectroscopy of uranyl salicylaldiminate complexes
- A comparison between the chemical behaviour of lead-gold and lead-bismuth eutectics towards 316L stainless steel
- Effect of temperature on the solubility and solid phase stability of zirconium hydroxide
- Purification of selenium from thorium, uranium, radium, actinium and potassium impurities for low background measurements
- Analysis of long-lived radionuclides produced by proton irradiation in lead targets – γ -measurements
- Feasibility studies for production of 89Sr in the Fast Breeder Test Reactor (FBTR)
- Synthesis of I-131 labelled iodine species relevant during severe nuclear accidents in light water reactors
Artikel in diesem Heft
- Inhalt
- Cross-sections of 45Sc(n, 2n)44m,gSc reaction from the reaction threshold to 20 MeV
- Fast neutron spectrum unfolding of a TRIGA Mark II reactor and measurement of spectrum-averaged cross sections: integral tests of differential cross sections of neutron threshold reactions
- Determination of 234U and 238U in seawater samples by alpha spectrometry after concentration of U(VI) onto hydrotalcite and co-precipitation with LaF3
- Substitution of IO3 −, IO4−, SeO3 2−, and SeO42− for CO32− in Na4[UO2(CO3)3]
- Structure and spectroscopy of uranyl salicylaldiminate complexes
- A comparison between the chemical behaviour of lead-gold and lead-bismuth eutectics towards 316L stainless steel
- Effect of temperature on the solubility and solid phase stability of zirconium hydroxide
- Purification of selenium from thorium, uranium, radium, actinium and potassium impurities for low background measurements
- Analysis of long-lived radionuclides produced by proton irradiation in lead targets – γ -measurements
- Feasibility studies for production of 89Sr in the Fast Breeder Test Reactor (FBTR)
- Synthesis of I-131 labelled iodine species relevant during severe nuclear accidents in light water reactors
