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Thermodynamic studies on formation of Europium(III)-adenine nucleotides complexes

✍ Scribed by J. Galea; R. Beccaria; G. Ferroni; J.P. Belaich

Publisher: Elsevier Science
Year: 1978
Tongue: English
Weight: 429 KB
Volume: 23
Category: Article
ISSN: 0013-4686
DOI: 10.1016/0013-4686(78)80094-2

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✦ Synopsis

Ah&act-The following equilibrium constants have been detemined by constant pH potentiomctric measurements in water tetramethylammonium bromide (0.2 M) medium, for the temperature range between 5°C to 35°C: AH" -.-A'"+ 1) + H+ A"+')-+Eu~+~AEu'=-~'-~,,, AH"-+ Eu'+ tiAHEu'"-"-k,,, AHE@'-"-=AEu'"-*'-+ H+ k,,, (A represents the auclcotides which can be AMP, ADP or ATP). From the effects of temperature on these equilibria we calculate their associated thermodynamic quantities. The solubility of the Europium(II1) hydroxyde has also been determined under the same experimental conditions.

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