Abstract
Rates of removal of metal ions from metal–fulvic acid complexes in aqueous solutions by Chelex-100 cation exchange resin have been measured using inductively-coupled plasma mass spectrometry (ICP–MS). When metal ions are complexed by the complexing agents, fulvic acid and ethylenediaminetetraacetic acid (each complexing agent is taken separately), the rate of uptake of metal ions by Chelex-100 has been related to the rate of dissociation of the metal complexes. The data were analyzed using the statistical methods described in Part 1. Complexes of lead with fulvic acid have a broad distribution of rate constants for dissociation, whereas complexes of aluminum with fulvic acid have a narrow distribution of dissociation rate constants. The rate constants for dissociation of both of these complexes decrease as the concentration of fulvic acid is increased at constant concentration of the metal. The results show that neither Zn nor Cd form strong complexes with fulvic acid.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.