Extraction and determination of manganese(II) in environmental and pharmaceutical samples

Abstract

A method is proposed for the extraction of manganese(II) from salicylate media by using Aliquat 336 dissolved in xylene as an extractant. The optimum conditions were determined from a critical study of pH, salicylate concentration, Aliquat 336 concentration, diluent and period of equilibration (shaking time). The method permits the separation of manganese from binary mixtures containing commonly associated metal ions. Manganese is determined either by spectrophotometry with 4-(2-pyridylazo)resorcinol or by atomic absorption spectrometry. The method is applicable to the extraction and determination of manganese in environmental and pharmaceutical samples.