Chloride, nitrate and sulphate complexes of europium (III) and americium (III)

Bansal, B. M.; Patil, S. K.; Sharma, H. D.

doi:10.1016/0022-1902(64)80261-x

Cited by 56 publications

(25 citation statements)

References 7 publications

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“…Metal cations are solvated with nitrate ions (NO 3 − ) in nitric acid solution and with chloride ions (Cl − ) in hydrochloric acid solution. The stability constants for Eu and Am with nitrate and chloride ions reported in some references [23][24][25] are listed in Table 1. These stability constants indicate that the nitrate complexes are more stable than the chloride complexes, although the stability of Eu complexes is similar to that of Am ones in the same medium.…”

Section: Resultsmentioning

confidence: 99%

Effect of counter-anions on the adsorption of trivalent actinides and lanthanides on tertiary pyridine resin in alcoholic chloride and nitrate solutions

Ikeda

Itoh

Suzuki

et al. 2006

Journal of Alloys and Compounds

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Section: Resultsmentioning

confidence: 99%

Effect of counter-anions on the adsorption of trivalent actinides and lanthanides on tertiary pyridine resin in alcoholic chloride and nitrate solutions

Ikeda

Itoh

Suzuki

et al. 2006

Journal of Alloys and Compounds

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“…(k) Fronaeus (1952), cation-exchange, t ϭ 20°C. (l) Bansal et al (1964), cation-exchange, t ϭ 26°C. Much lower value in 1 mol/L HClO 4 excluded.…”

Section: Introductionmentioning

confidence: 99%

Determination of SO4β1 for yttrium and the rare earth elements at I = 0.66 m and t = 25°C—implications for YREE solution speciation in sulfate-rich waters

Schijf

Byrne

2004

Geochimica et Cosmochimica Acta

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“…[23] The stability constants of nitrate complexes with Am and Eu can be found in the literature. [24] Constant Ionic Strength, but Varying Nitrate=Perchlorate Ion Concentration Ratios…”

Section: Spectrophotometer (Perkin Elmer Lambda 19 Uv=vis=nir 200-40mentioning

confidence: 99%

Extraction Behavior of the Synergistic System 2,6‐ bis ‐(Benzoxazolyl)‐4‐ Dodecyloxylpyridine and 2‐Bromodecanoic Acid Using Am and Eu as Radioactive Tracers

Ekberg¹,

Foreman²,

Hudson³

et al. 2003

Solvent Extraction and Ion Exchange

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In this study, the extraction properties of a synergistic system consisting of 2,6-bis-(benzoxazolyl)-4-dodecyloxylpyridine (BODO) and 2-bromodecanoic acid (HA) in tert-butyl benzene (TBB) have been investigated as a function of ionic strength by varying the nitrate ion and perchlorate ion concentrations. The influence of the hydrogen ion concentration has also been investigated. Distribution ratios between 0.03-12 and 0.003-0.8 have been found for Am(III) and Eu(III), respectively, but there were no attempts to maximize these values. It has been shown that the distribution ratios decrease with increasing amounts of ClO 4 À , NO 3 À , and H þ . The mechanisms, however, by which the decrease occurs, are different. In the case of increasing perchlorate ion concentration, the decrease in extraction is linear in a log-log plot of the distribution ratio vs. the ionic strength, while in the nitrate case the complexation between nitrate and Am or Eu increases at high nitrate ion concentrations and thereby decreases the distribution ratio in a non-linear way. The decrease in extraction could be caused by changes in activity coefficients that can be explained with specific ion interaction theory (SIT); shielding of the metal ions, and by nitrate complexation with Am and Eu as competing mechanism at high ionic strengths. The separation factor between Am and Eu reaches a maximum at $1 M nitrate ion concentration. Thereafter the values decrease with increasing nitrate ion concentrations.

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Chloride, nitrate and sulphate complexes of europium (III) and americium (III)

Cited by 56 publications

References 7 publications

Effect of counter-anions on the adsorption of trivalent actinides and lanthanides on tertiary pyridine resin in alcoholic chloride and nitrate solutions

Effect of counter-anions on the adsorption of trivalent actinides and lanthanides on tertiary pyridine resin in alcoholic chloride and nitrate solutions

Determination of SO4β1 for yttrium and the rare earth elements at I = 0.66 m and t = 25°C—implications for YREE solution speciation in sulfate-rich waters

Extraction Behavior of the Synergistic System 2,6‐ bis ‐(Benzoxazolyl)‐4‐ Dodecyloxylpyridine and 2‐Bromodecanoic Acid Using Am and Eu as Radioactive Tracers

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