SOME QUESTIONS OF THE SPECIATION ANALYSIS

Abstract

Speciation analysis is considered to be one of actual trends of modern analytical chemistry. Based on the numerous monographs and reviews its general principles and features are reviewed. It was noticed that increasing of the interest in the speciation analysis in the last years is connected with mainly biomedical and ecological tasks. Conclusion about insufficient attention to the problems of determination of chemical forms of the components of different inorganic functional materials is drawn. Such tasks require maintenance of initials forms of the analyte during transferring sample into the solution. Combination of procedure of dissolution of the sample in presence of reagents that selectively and quantitatively react with the determined chemical form of element is confessed to be optimal. As well as nondestructive methods of forms detection. For this purpose, spectroscopy of diffuse reflection can be recommended.

Keywords

• речовинний аналіз
• функціональні матеріали
• визначення хімічних форм компонентів
• неруйнівні методи аналізу
• оксиди
• фториди
• халькогеніди