TY - BOOK AU - Abdelrahman Mohammed Ahmed Younes AU - Alaa Amin , AU - Ayda Lotfy Elansary , AU - Waheed Elhawary , TI - Spectrophotometric determination of some metal ions using chromone azo dyes / PY - 2010/// CY - Cairo : PB - Abdelrahman Mohammed Ahmed Younes , KW - Azo dye KW - Chromone KW - Copper N1 - Thesis (Ph.D.) - Cairo University - Faculty of Science - Department of Analytical Chemistry; Issued also as CD N2 - 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 UR - http://172.23.153.220/th.pdf ER -