Abdelrahman Mohammed Ahmed Younes <br/><br/>
Spectrophotometric determination of some metal ions using chromone azo dyes /  
 التقدير الطيفى لبعض الايونات الفلزية باستخدام صبغات الازو المشتقة من الكرومون 
Abdel Rahman Mohammed Ahmed Younes ; Supervised A. L. Elansary , A. S. Amin , Waheed F. Elhawary 
 - Cairo :   Abdelrahman Mohammed Ahmed Younes ,   2010 
 - 262 P. :   charts ;   25cm 
<br/><br/>Thesis (Ph.D.) - Cairo University - Faculty of Science - Department of Analytical Chemistry 
<br/><br/> The present work presents a study of the absorption spectra of the perpared chromone azo dyes under investigation in different organic solvents of various polarities as ethanol, 1-propanol, acetone, dioxane and dimethylformamide and the data are correlated with the solvent parameters. The effects of the substitutions on the acid dissociation constant of the studied ligands were examined by spectral measurements 
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<br/><br/><label>Subjects--Index Terms: </label>Azo dye Chromone Copper