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

作者：Du JZ; Li WJ; Zhang HQ; Wang XD; You ZJ; Zhou CY; Dong WM; Tao ZY^*

来源：Journal of Radioanalytical and Nuclear Chemistry, 1999, 241(3): 651-654.

DOI：10.1007/BF02347227

The stability constants for tracer 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 Co-60. 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 log beta (stability constant) of humic and fulvic acid complexes were 5.76+/-0.19 and 4.42+/-0.03, respectively.

• 出版日期1999-9
• 单位兰州大学; 中国辐射防护研究院