Abstract 1, 8-Dihydroxyanthraquinone (1, 8-DHAn) shows a fluorescent reaction with Ca(II) ion in ethanol-water mixtures and ammoniacal medium. In the present work the 1, 8-DHAn-Ca(II) complex has been studied spectrofluorimetrically. The complex shows two excitation maxima at 485 nm and 495 nm and its emission maximum is centered at 615 nm. A 2:1 (R:C) stoichiometry and a log Kest of 7.38±0.22 for the overall equilibrium have been found for the complex. A new method for the spectrofluorimetric determination of Ca(II) between 50 and 550 ngml−1 has been proposed. The interference level of foreign ions has been established.
Discussion(0)
No comments yet. Be the first to comment.