Polyelectrolyte effect on spectrophotometric determination and interaction of scandium (III) with eriochromcyanine

Authors

DOI:

https://doi.org/10.15587/1729-4061.2017.108371

Keywords:

scandium, eriochromcyanine, polyelectrolyte, test method, surfactant, spectrophotometric technique

Abstract

The influence of cationic water-soluble polyelectrolyte PSPMG on the interaction of scandium (III) with organic reagent eriochromcyanine is studied. Because the study of the possibility of obtaining new, more effective, modified reagents with a complex of better analytical characteristics is an actual analytical task.

The optimal conditions of complex formation were experimentally determined: the pH range (5.5–6.5), the order of the adding of the components (1 – scandium, 2 – ECR, 3 – PSPMG, 4 – buffer solutions), the composition of the Sc-ECR-PSPMG complex (1:4:1) were experimentally determined and the molar absorption coefficient – 1.8·105 was calculated. A sensitive spectrophotometric method for scandium determination in solutions at the level of 10-7 mol/L was developed.

The optimal scandium sorption parameters in the form of three-component systems Sc-OR-modifier on solid-state carriers were established, scandium sorption isotherms were constructed, sorption parameters of Agran and Kads were calculated. The test systems for the identification of scandium as ternary compounds in polyurethane foam and cotton were proposed, calibration curves in the concentration range from 1·10-6–1·10-5 mol/L were built and the colorimetric method of identification of scandium in solutions that accelerate analysis was proposed.

It is shown that the PSPMG application is a promising direction for improvement of chemical-analytical characteristics of organic reagents (eriochromcyanine and chromazurol S) because its usage increases the sensitivity and selectivity of the spectrophotometric determination of scandium in the form of a complex Sc-OR-PSPMG.

Author Biographies

Larysa Sydorova, Oles Honchar Dnipro National University Gagarina ave., 72, Dnipro, Ukraine, 49050

PhD, Associate Professor

Department of Analytical Chemistry

Anna Chernyavska, Oles Honchar Dnipro National University Gagarina ave., 72, Dnipro, Ukraine, 49050

Postgraduate student

Department of Analytical Chemistry

Tatyana Chmylenko, Oles Honchar Dnipro National University Gagarina ave., 72, Dnipro, Ukraine, 49050

PhD, Associate Professor

Department of Analytical Chemistry

Fedor Chmylenko, Oles Honchar Dnipro National University Gagarina ave., 72, Dnipro, Ukraine, 49050

Doctor of Chemical Sciences, Professor, Honored Worker of Science and Technology of Ukraine, Academician of the Academy of Higher Education of Ukraine

Department of Analytical Chemistry

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Published

2017-08-22

How to Cite

Sydorova, L., Chernyavska, A., Chmylenko, T., & Chmylenko, F. (2017). Polyelectrolyte effect on spectrophotometric determination and interaction of scandium (III) with eriochromcyanine. Eastern-European Journal of Enterprise Technologies, 4(6 (88), 53–58. https://doi.org/10.15587/1729-4061.2017.108371

Issue

Vol. 4 No. 6 (88) (2017): Technology organic and inorganic substances

Section

Technology organic and inorganic substances

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Copyright (c) 2017 Larysa Sydorova, Anna Chernyavska, Tatyana Chmylenko, Fedor Chmylenko

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