期刊
ANALYTICAL CHEMISTRY
卷 91, 期 15, 页码 9978-9985出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.analchem.9b01724
关键词
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资金
- National Natural Science Foundation of China [21802145, 21735005]
- Postdoctoral Innovation Talents Supporting Project [BX20180311]
- Science and Technology Major Project of Anhui Province [17030801033]
- Key Program of 13th five-year plan, Hefei Institutes of Physical Science, Chinese Academy of Sciences (CAS)
- CAS Interdisciplinary Innovation Team, Chinese Academy of Sciences, China
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.
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