Although it has been
recognized that the interference between heavy
metal ions (HMIs) becomes a severe problem for the simultaneous electroanalysis
of multiple HMIs, the factor leading to the interference is still
difficult to identify, due to the limited understanding of the electroanalytic
kinetics. In this work, a kinetic model is built for the electroanalysis
of HMIs, and the electroanalytic results are simulated for Cd(II),
Cu(II), and their mixture as examples for the interference investigation.
The mutual interference between Cd and Cu is observed on the glassy
carbon electrode. By applying the kinetic model, the replacement of
deposited Cd by Cu(II) at the codeposition stage is regarded as the
main reason for the interference, and the corresponding suggestion
for selecting suitable electrode materials to avoid such interference
is also provided.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.