Evaluation of Distribution Constants of Lanthanoid(III) Acetylacetonates between Sodium Dodecyl Sulfate Micelles and Water by Micellar Capillary Electrophoresis
Identifieur interne : 002A34 ( Main/Curation ); précédent : 002A33; suivant : 002A35Evaluation of Distribution Constants of Lanthanoid(III) Acetylacetonates between Sodium Dodecyl Sulfate Micelles and Water by Micellar Capillary Electrophoresis
Auteurs : Shoichi Katsuta [Japon] ; Tomohiko Nakatani [Japon]Source :
- Journal of Colloid And Interface Science [ 0021-9797 ] ; 1997.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
- Academic press, Acetylacetonates, Acetylacetone, Anionic micelles, Anionic surfactant, Aqueous phase, Atomic number, Axis intercept, Capacity factor, Cationic, Cationic complexes, Chem, Distribution constants, Distribution ratio, Electrophoresis, Experimental study, Khep, Lanthanoid, Lanthanoid complexes, Lauryl sulfate, Lighter lanthanoid, Metal acetylacetonates, Metal complexes, Micellar, Micellar capillary electrophoresis, Micellar phase, Micellar system, Micelle, Migration time, Migration times, Neodymium Complexes, Neutral complexes, Opposite tendency, Other metal complexes, Other metals, Samarium Complexes, Sample solutions, Sodium Compounds, Sodium dodecyl sulfate micelles, Solid lines, Solubilization, Solubilization behavior, Solute, Stability constants, Terbium Complexes, Thulium Complexes, Total concentration, distribution constants, lanthanoid(III) complexes, micellar capillary electrophoresis, micelles, solubilization.
- Teeft :
- Academic press, Acetylacetonates, Acetylacetone, Anionic micelles, Aqueous phase, Atomic number, Axis intercept, Capacity factor, Cationic, Cationic complexes, Chem, Distribution constants, Distribution ratio, Khep, Lanthanoid, Lanthanoid complexes, Lighter lanthanoid, Metal acetylacetonates, Metal complexes, Micellar, Micellar capillary electrophoresis, Micellar phase, Micellar system, Migration time, Migration times, Neutral complexes, Opposite tendency, Other metal complexes, Other metals, Sample solutions, Sodium dodecyl sulfate micelles, Solid lines, Solubilization behavior, Solute, Stability constants, Total concentration.
Abstract
Abstract: The solubilization behavior of acetylacetonate complexes of lanthanoids(III) (Nd, Sm, Tb, and Tm) in sodium dodecyl sulfate micelles has been quantitatively evaluated by means of micellar capillary electrophoresis. From analysis of the migration times of the lanthanoid complexes, assuming incorporation of the cationic bis-acetylacetonates as well as the neutral tris-acetylacetonates into the anionic micelles, the distribution constant of each species between the micelles and water (Kmc/w) was determined. The distribution constants obtained were compared with those of the tris-acetylacetonates between heptane and water (Khep/w). TheKmc/wvalue of the neutral complex is smaller than that of the cationic one but much larger than theKhep/wvalue. TheKmc/wandKhep/wvalues of the neutral complex increase with increasing atomic number of the lanthanoid, whereas the opposite tendency was observed forKmc/wof the cationic complex.
Url:
DOI: 10.1006/jcis.1997.5173
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<front><div type="abstract" xml:lang="en">Abstract: The solubilization behavior of acetylacetonate complexes of lanthanoids(III) (Nd, Sm, Tb, and Tm) in sodium dodecyl sulfate micelles has been quantitatively evaluated by means of micellar capillary electrophoresis. From analysis of the migration times of the lanthanoid complexes, assuming incorporation of the cationic bis-acetylacetonates as well as the neutral tris-acetylacetonates into the anionic micelles, the distribution constant of each species between the micelles and water (Kmc/w) was determined. The distribution constants obtained were compared with those of the tris-acetylacetonates between heptane and water (Khep/w). TheKmc/wvalue of the neutral complex is smaller than that of the cationic one but much larger than theKhep/wvalue. TheKmc/wandKhep/wvalues of the neutral complex increase with increasing atomic number of the lanthanoid, whereas the opposite tendency was observed forKmc/wof the cationic complex.</div>
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<front><div type="abstract" xml:lang="en">The solubilization behavior of acetylacetonate complexes of lanthanoids(III) (Nd, Sm, Tb, and Tm) in sodium dodecyl sulfate micelles has been quantitatively evaluated by means of micellar capillary electrophoresis. From analysis of the migration times of the lanthanoid complexes, assuming incorporation of the cationic bis-acetylacetonates as well as the neutral tris-acetylacetonates into the anionic micelles, the distribution constant of each species between the micelles and water (K<sub>mc/w</sub>
) was determined. The distribution constants obtained were compared with those of the trisacetylacetonates between heptane and water (K<sub>hep/w</sub>
). The K<sub>mc/w</sub>
value of the neutral complex is smaller than that of the cationic one but much larger than the K<sub>hep/w</sub>
value. The K<sub>mc/w</sub>
and K<sub>hep/w</sub>
values of the neutral complex increase with increasing atomic number of the lanthanoid, whereas the opposite tendency was observed for K<sub>mc/w</sub>
of the cationic complex.</div>
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<term>Lighter lanthanoid</term>
<term>Metal acetylacetonates</term>
<term>Metal complexes</term>
<term>Micellar</term>
<term>Micellar capillary electrophoresis</term>
<term>Micellar phase</term>
<term>Micellar system</term>
<term>Migration time</term>
<term>Migration times</term>
<term>Neutral complexes</term>
<term>Opposite tendency</term>
<term>Other metal complexes</term>
<term>Other metals</term>
<term>Sample solutions</term>
<term>Sodium dodecyl sulfate micelles</term>
<term>Solid lines</term>
<term>Solubilization behavior</term>
<term>Solute</term>
<term>Stability constants</term>
<term>Total concentration</term>
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<front><div type="abstract" xml:lang="en">Abstract: The solubilization behavior of acetylacetonate complexes of lanthanoids(III) (Nd, Sm, Tb, and Tm) in sodium dodecyl sulfate micelles has been quantitatively evaluated by means of micellar capillary electrophoresis. From analysis of the migration times of the lanthanoid complexes, assuming incorporation of the cationic bis-acetylacetonates as well as the neutral tris-acetylacetonates into the anionic micelles, the distribution constant of each species between the micelles and water (Kmc/w) was determined. The distribution constants obtained were compared with those of the tris-acetylacetonates between heptane and water (Khep/w). TheKmc/wvalue of the neutral complex is smaller than that of the cationic one but much larger than theKhep/wvalue. TheKmc/wandKhep/wvalues of the neutral complex increase with increasing atomic number of the lanthanoid, whereas the opposite tendency was observed forKmc/wof the cationic complex.</div>
</front>
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