Studies on the Hydrolysis of Metal Ions. Part 35. The Hydrolysis of the Lanthanum Ion, La3+.

Biedermann, George; Ciavatta, Liberato; Stjernström, Nils E.

doi:10.3891/acta.chem.scand.15-1347

Cited by 90 publications

(25 citation statements)

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“…Partial hydrolysis of M3+ results in rapid formation of significant quantities of relatively soluble M(OH)2+, M(OH)2' and other species (Biedermann & Ciavatta, 1961;Evans, 1990), the final concentrations of which are largely unknown. It is likely that some of the hydrolysis products contributed to the observed effects in this study.…”

Section: Solutions and Bath Perfusionmentioning

confidence: 99%

Block of current through T‐type calcium channels by trivalent metal cations and nickel in neural rat and human cells.

Mlinar

Enyeart

1993

The Journal of Physiology

140

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Section: Solutions and Bath Perfusionmentioning

confidence: 99%

Block of current through T‐type calcium channels by trivalent metal cations and nickel in neural rat and human cells.

Mlinar

Enyeart

1993

The Journal of Physiology

140

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“…Les travaux de Biedermann et Ciavatta [7] permettent de conclure à l'exis tence de trois cations hydroxylés du type Lap (OH)q en solutions fraîches. Ce sont :…”

Section: Iii2 Réversibilité Des Produits D'hydrolyseunclassified

“…Enfin, pour atteindre les mécanismes des réactions d'hydrolyse du lanthane, Biedermann et Ciavatta [7] ont fait appel à des mesures potentiométriques.…”

Section: Introductionunclassified

Étude par filtration, en conditions proches des contaminations respiratoires, de l'influence du pH et de la concentration sur l’état physico-chimique du lanthane en solution

et al. 1969

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Manuscrit reçu le 27 mars 1969) RÉSUMÉ L'étude du comportement hydrolytique du lanthane en milieu aqueux tam ponné (pH 7 à 9), dans un domaine de concentration compris entre 10-8 et 10-2 M, a été étudié par filtration sur « Millipore ».Cette technique permet de mettre en évidence l'apparition d'une phase non filtrable à pH 7,2, quelle que soit la concentration.Par ailleurs, nos résultats ont montré une inversion dans le phénomène de polymérisation du lanthane. Les produits d'hydrolyse augmentent avec la concen tration lorsque celle-ci varie de 10-8 à 10-4 M, puis diminuent entre 10-3 et 10-2 M, quel que soit le pH étudié.Ces résultats sont interprétés par l'évolution d'espèces hydrolysées différentes, formées initialement dans les solutions, et les prolongements biologiques dans le domaine de la contamination interne sont discutés. SUMMARYThe hydrolytic behaviour of Lanthanum in buffered aqueous media (pH 7-9) with concentrations ranging from 10-8 M to 10-2 M has been studied by " Milli pore " filtration.The technique allowed to show out the occurence of an unfilterable phase at pH 7,2 whatever the concentration.Besides, our results showed an inversion in the Lanthanum process of poly merization. Hydrolysates increased with concentration when the latter passed from 10-8 M to 10-4 M, then decreased between 10-3 M and 10-2 M, whatever the pH studied.These results are seen in the light of the evolution of different hydrolysis species, formed in the solutions from the beginning, and their biological deve lopments in the field of internal contamination are discussed.

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“…The hydrogen ion concentration, h, in a solution was determined with the following equation, assuming that the activity factor of the hydrogen ion is kept constant and that the liquid junction potential is negligible: (1) (4) Equation (3) can, in combination with Eq. (2), be rewritten as: …”

mentioning

confidence: 99%

The Dissociation Constant of 5, 5-Diethylbarbituric Acid in Aqueous and Aqueous-Dioxane Solutions

Ohtaki¹,

Kato²

1967

Bulletin of the Chemical Society of Japan

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Studies on the Hydrolysis of Metal Ions. Part 35. The Hydrolysis of the Lanthanum Ion, La3+.

Cited by 90 publications

References 0 publications

Block of current through T‐type calcium channels by trivalent metal cations and nickel in neural rat and human cells.

Block of current through T‐type calcium channels by trivalent metal cations and nickel in neural rat and human cells.

Étude par filtration, en conditions proches des contaminations respiratoires, de l'influence du pH et de la concentration sur l’état physico-chimique du lanthane en solution

The Dissociation Constant of 5, 5-Diethylbarbituric Acid in Aqueous and Aqueous-Dioxane Solutions

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