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Kinetics of Reduction of Aza Cyanine Dyes by Bisulphite Ions in (Acetate-Acetic Acid) Buffer-Ethanol Mixtures

M. M. Girgis ; Chemistry Department, Faculty of Science, Assiut University, Assiut, Egypt
A. S. EI-Shahawy ; Chemistry Department, Faculty of Science, Assiut University, Assiut, Egypt
Z. H. Khalil ; Chemistry Department, Faculty of Science, Assiut University, Assiut, Egypt

Puni tekst: engleski, pdf (3 MB) str. 697-704 preuzimanja: 105* citiraj
APA 6th Edition
Girgis, M.M., EI-Shahawy, A.S. i Khalil, Z.H. (1987). Kinetics of Reduction of Aza Cyanine Dyes by Bisulphite Ions in (Acetate-Acetic Acid) Buffer-Ethanol Mixtures. Croatica Chemica Acta, 60 (4), 697-704. Preuzeto s https://hrcak.srce.hr/176396
MLA 8th Edition
Girgis, M. M., et al. "Kinetics of Reduction of Aza Cyanine Dyes by Bisulphite Ions in (Acetate-Acetic Acid) Buffer-Ethanol Mixtures." Croatica Chemica Acta, vol. 60, br. 4, 1987, str. 697-704. https://hrcak.srce.hr/176396. Citirano 27.02.2021.
Chicago 17th Edition
Girgis, M. M., A. S. EI-Shahawy i Z. H. Khalil. "Kinetics of Reduction of Aza Cyanine Dyes by Bisulphite Ions in (Acetate-Acetic Acid) Buffer-Ethanol Mixtures." Croatica Chemica Acta 60, br. 4 (1987): 697-704. https://hrcak.srce.hr/176396
Harvard
Girgis, M.M., EI-Shahawy, A.S., i Khalil, Z.H. (1987). 'Kinetics of Reduction of Aza Cyanine Dyes by Bisulphite Ions in (Acetate-Acetic Acid) Buffer-Ethanol Mixtures', Croatica Chemica Acta, 60(4), str. 697-704. Preuzeto s: https://hrcak.srce.hr/176396 (Datum pristupa: 27.02.2021.)
Vancouver
Girgis MM, EI-Shahawy AS, Khalil ZH. Kinetics of Reduction of Aza Cyanine Dyes by Bisulphite Ions in (Acetate-Acetic Acid) Buffer-Ethanol Mixtures. Croatica Chemica Acta [Internet]. 1987 [pristupljeno 27.02.2021.];60(4):697-704. Dostupno na: https://hrcak.srce.hr/176396
IEEE
M.M. Girgis, A.S. EI-Shahawy i Z.H. Khalil, "Kinetics of Reduction of Aza Cyanine Dyes by Bisulphite Ions in (Acetate-Acetic Acid) Buffer-Ethanol Mixtures", Croatica Chemica Acta, vol.60, br. 4, str. 697-704, 1987. [Online]. Dostupno na: https://hrcak.srce.hr/176396. [Citirano: 27.02.2021.]

Sažetak
The kinetics of bisulphite ions reduction of 2-[[[4-(dimethylamino)
phenyl]imino]methyl]-l-ethylpyridinium iodide (I), 4-[[[4-
-(dimethylamino)phenyl]imino]methyl]-l-ethylpyridinium iodide
(II) and 2-[[[4-(dimethylamino)phenyl]imino]methyl]-1-ethylquin0-
linium iodide (III) in buffer- ethanol mixtures were investigated
from 18ce to 45ce spectrophotometrically. These reactions follow
the overall second-order kinetics, first order with respect to each
of the reactants. Reaction rates decrease with increasing ethanol, as
well as hydrogen ion concentrations. The reduction rate (k2) of aza
cyanine dyes depends on the structure of the dye used and follows
the order: dye(I) > dye(lI) > dye(III). Activation parameters were
evaluated using Arrhenius and Eyring equations.

Hrčak ID: 176396

URI
https://hrcak.srce.hr/176396

Posjeta: 184 *