Use of the cation exchange equilibrium method for the determination of stability constants of Co(II) with soil humic and fulvic acids

J. Z. Du, W. J. Li, H. Q. Zhang, X. D. Wang, Z. J. You, C. Y. Zhou, W. M. Dong, Z. Y. Tao

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

The stability constants for tracey concentrations of Co(II) complexes with both the red earth humic and fulvic acids were determined at pH 5.9 and ionic strength 0.010 mol/l by using the ARDAKANI-STEVENSON cation exchange equilibrium method and the radiotracer 60Co. It was found that the 1:1 complexes of Co(II) with the red earth humic and fulvic acids were formed and that the average values of logβ (stability constant) of humic and fulvic acid complexes were 5.76±0.19 and 4.42±0.03, respectively.

Original languageEnglish
Pages (from-to)651-654
Number of pages4
JournalJournal of Radioanalytical and Nuclear Chemistry
Volume241
Issue number3
DOIs
StatePublished - 1999
Externally publishedYes

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