Effects of ionic strength and pH on the stability constants of the complexof Co(II) with soil fulvic acid

Authors
Dong, WM Li, WJ Zhang, HQ Wang, XD You, ZJ Zhou, CY Du, JZ Tao, ZY
Citation
Wm. Dong et al., Effects of ionic strength and pH on the stability constants of the complexof Co(II) with soil fulvic acid, J RAD NUCL, 241(2), 1999, pp. 351-353
Citations number
9
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
ISSN journal
02365731 → ACNP
Volume
241
Issue
2
Year of publication
1999
Pages
351 - 353
Database
ISI
SICI code
0236-5731(199908)241:2<351:EOISAP>2.0.ZU;2-N
Abstract
The stability constants for tracer concentrations of Co(II) complexes with the red earth fulvic acid were determined at pH 3.8-6.8 and ionic strength 0.001-1.0 mol/l by using the cation exchange equilibrium method and the rad iotracer Co-60. Th, effects of ionic strength and pH on the stability const ants of 1:1 Co(II) complexes were investigated, and it was found that the s tability constants of complexes of humic substances do not vary with ionic strength and pH in a manner similar to that of simple complexes.