scholarly journals THE INTERNAL ADSORPTION ISOTHERMS IN THE DYEING OF VINYLON WITH ORANGE II

1962 ◽  
Vol 18 (8) ◽  
pp. 736-740
Author(s):  
Akira Katayama ◽  
Nobuhiko Kuroki ◽  
Kenzo Konishi
1952 ◽  
Vol 30 (4) ◽  
pp. 320-331 ◽  
Author(s):  
J. Ross Colvin

The adsorption of a large series of anions by positively charged lysozyme, calf thymus histone sulphate, and protamine sulphate has been studied by dialysis equilibrium. One group of anions was not adsorbed by lysozyme while the adsorption isotherms for Orange I, Orange II, and 2, 4-dinitro-1-naphthol-7-sulphonic acid were S-shaped. These anomalous isotherms, which were also obtained with histone sulphate and protamine sulphate, have an appreciable temperature coefficient at intermediate dye concentrations. It is emphasized that this type of adsorption is inconsistent with the exclusively electrostatic view of protein binding of anions. It is also shown that −ΔF, −ΔH, and ΔS per mole of anion bound must pass through a maximum for intermediate free anion concentrations in such systems. The lack of binding of some anions and the anomalous isotherms for others is interpreted in terms of a solvation sheath about the charged protein. Their significance for the general process of binding of ions by proteins is discussed.


1954 ◽  
Vol 32 (3) ◽  
pp. 184-188 ◽  
Author(s):  
J. Ross Colvin

The adsorption isotherms of Orange II on cytochrome c and ribonuclease at pH 5.5 in 0.05 M acetate buffer are sigmoid. They may be interpreted by a previously described theory of interacting hydration effects. Adsorption of methyl orange or sodium flavianate by either protein was negligible.


1954 ◽  
Vol 32 (1) ◽  
pp. 184-188
Author(s):  
J. Ross Colvin

The adsorption isotherms of Orange II on cytochrome c and ribonuclease at pH 5.5 in 0.05 M acetate buffer are sigmoid. They may be interpreted by a previously described theory of interacting hydration effects. Adsorption of methyl orange or sodium flavianate by either protein was negligible.


1981 ◽  
Vol 31 (1) ◽  
pp. 597-601 ◽  
Author(s):  
Karim Farag ◽  
Francis Perineau ◽  
Antoine Gaset ◽  
Jacques Molinier

Diabetes ◽  
1984 ◽  
Vol 33 (7) ◽  
pp. 674-680 ◽  
Author(s):  
M. V. Sefton ◽  
G. M. Antonacci
Keyword(s):  

2004 ◽  
Vol 68 (3) ◽  
pp. 795 ◽  
Author(s):  
Sabine Goldberg ◽  
Donald L. Suarez ◽  
Nicholas T. Basta ◽  
Scott M. Lesch

1987 ◽  
Vol 52 (3) ◽  
pp. 572-581 ◽  
Author(s):  
Miroslav M. Kopečni ◽  
Slobodan K. Milonjic ◽  
Wladyslaw Rudzinski ◽  
Jacek Jagiello

Adsorption isotherms of three adsorbates on the solid beads obtained from colloidal silica were determined by means of gas chromatography at low surface coverages, when lateral interactions between the adsorbed molecules are negligible. The influence of thermal pretreatment on the adsorption properties of the solids was investigated in the temperature range from 343 to 423 K, while the solids were heated between 523 K and 1 223 K. The thermodynamic parameters of adsorption have been determined and used to discuss the adsorbate-adsorbent interactions.


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