M. Ceba, A. Fernandez-Gutiérrez, F. Cárdenas
Dec 1, 1980
Citations
0
Influential Citations
1
Citations
Journal
Microchemical Journal
Abstract
Abstract The spectrofluorometric study was made of the complex 1,4-diaminoanthraquinone-Ca in aqueous sulfuric mediums [λmax,ex = 410 nm; λmax,em = 580 nm; 50% H2O; stable for at least 4 hr; range temperature optimum = 20–35 °C; [R]optimum = 2 × 10−4M; stoichiometry 2:1 (fluorescent complex) and 1:1 (no fluorescent complex)]. A new method for the spectrofluorometric determination of Ca traces is proposed for concentrations between 150 and 400 ppb. The relative error and the interferences of the method have been investigated.