EXTRACTION-ATOMIC-ABSORPTION DETERMINATION OF ZINC (II) IN ACIDIC WATER SOLUTIONS

doi: 10.25712/ASTU.2072-8921.2021.01.019

Abstract

The study belongs to the field of analytical chemistry and is aimed at the analytical application of a low-melting extractant with a temperature below the boiling point of water and is intended for practical use in analytical, eco-analytical and medical laboratories for the extraction of ionic forms of zinc (II) from acidic aqueous chloride solutions. As an object of chemical analysis for liquid or solid-phase concentration, as a rule, natural surface waters and technical solutions serve. Zinc (II), a microelement normalized in aquatic ecosystems, was chosen as a chemical indicator. The promising low-melting melt of diacetylsalicylate of hexyldiantiprilmetan with a melting point below the boiling point of water, proposed by the authors, is distinguished by high density and hydrophobicity. Physicochemical properties of the melt make it easy to concentrate ions from an acidic aqueous solution, and the convenience of preparing the target concentrate. The extraction efficiency is demonstrated by the example of zinc (II) ions extracted from acidic chloride solutions. The aqueous and organic phases were analyzed for zinc (II) content by instrumental flame absorption spectrometry.