Determination of the concentration constants of stability of ion complexes of heavy metals with humus acids

Authors

  • Svetlana A. Sokolova associate professor of Chair of Chemisrty Voronezh State Agriculture University; Voronezh
  • Sergey E. Tsyplakov post-graduate student of Chair of Chemistry Voronezh State Agriculture University; Voronezh
  • Vladimir V. Kotov professor Chair of Chemisrty Voronezh State Agriculture University; Voronezh
  • Olga V. Dyakonova associate professor Chair of Chemisrty Voronezh State Agriculture University; Voronezh
  • Alexander N. Zyablov associate professor of Chair of Analytical Chemistry Voronezh State University; Voronezh

Keywords:

sorption, heavy metals, humus acids, liched chernozem, atomic adsorption spectroscopy, potentiometric titration, pH value of sorption, degree of extraction, concentration constant of sustainability.

Abstract

The peculiarities of sorption of heavy metals’ cations by humus acids, allocated from liched
chernozem were explored. By the method of atomic-adsorption spectroscopy the values of the pH
sorption and degree of extraction of metal ions by humus acids were determined. Using the method of
potentiometric titration the concentration of constants of stability were calculated. It is shown, that the
order of the sorption of heavy metal ions is simbatic to the increase of the values of the constants of
stability and the reduction of the values of the effective ion radius.

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Published

2019-11-20

Issue

Vol. 13 No. 2 (2013): Sorbtsionnye i Khromatograficheskie Protsessy

Section

Статьи

How to Cite

Determination of the concentration constants of stability of ion complexes of heavy metals with humus acids. (2019). Sorbtsionnye I Khromatograficheskie Protsessy, 13(2). https://journals.vsu.ru/sorpchrom/article/view/1613

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