Abstract
The addition of sodium dodecyl sulphate (SDS) was found to be advantageous in measuring uncomplexed labile copper(II) species in the presence of humic acid (HA) by anodic stripping voltammetry with a thin mercuy film glassy carbon electrode. If HA is present in the solution, the anodic peak of labile copper(II) species is broadened because of the adsorption of HA on the electrode. However, by adding SDS, a sharp peak was obtained and the peak area increased by about 30% because the adsorption of HA on the electrode was preveted. This was verified by electrocapillary curves in which SDS rather than HA become strongly adsorbed on the electrode. Moreover, this method was applied to the evaluation of copper(II) complexing abilities (conditional ability constants and complexing capacities) of HA by copper(II) titratio. The copper(II) complexing capacities of HA evaluated in the presence of SDS were 16% small values than those in the absence of SDS.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
