Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
579629 | Journal of Hazardous Materials | 2011 | 7 Pages |
Abstract
9-Acridone-4-carboxylic acid has been established as an efficient Cr(III) fluorescent sensor. The binding of this ligand with Cr(III) is confirmed by FTIR, thermal and mass spectral analysis of the product. Based on this chelation assisted fluorescence quenching, a highly sensitive spectrofluorometric method is developed for trace level detection, estimation and speciation studies of chromium in DMF-water. The ligand has an excitation and emission maxima at 408 nm and 498.4 nm, respectively. The equilibrium binding constant of the ligand with Cr(III) is 8.1378 Ã 104 as calculated using Stern-Volmer equation. Up to 9 Ã 10â6 mol Lâ1 of [Cr3+], linearity has been observed. The interference of foreign ions has been found to be negligible.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Health and Safety
Authors
Debasis Karak, Arnab Banerjee, Animesh Sahana, Subarna Guha, Sisir Lohar, Susanta Sekhar Adhikari, Debasis Das,