Collect. Czech. Chem. Commun. 1982, 47, 1321-1333

Comparison of the reactions of beryllium(II) ions with hydroxytriphenylmethane dyes in the presence of cationic and nonionic tensides. A rapid spectrophotometric method for determining Be(II) ion with eriochromcyanine R in the presence of Septonex

Irena Burešová, Vlastimil Kubáň and Lumír Sommer

Department of Analytical Chemistry, J. E. Purkyně University, 611 37 Brno


Spectrophotometric methods for determining Be(II) with Chromazurol S, Eriochromcyanine R and Eriochromazurol B in the presence of cationic and nonionic tensides were compared using the basic optical and statistical parameters. A rapid and sensitive method was developed for determining Be(II) using the Be(II)-Eriochromcyanine R-Septonex system in 0.1M pyridine or urotropine buffer of pH = 6.0 ± 0.1 with a molar absorption coefficient of 8.3 . 104 mmol-1.cm2 at 590 nm.