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Journal of Oceanography

, Volume 75, Issue 2, pp 149–156 | Cite as

Anodic stripping voltammetric analysis of different species of copper in seawater using an electrochemical sensor

  • Xueping Hu
  • Dawei PanEmail author
  • Haitao Han
  • Chenchen Wang
Original Article
  • 58 Downloads

Abstract

The behavior, effects, and toxicity of an element often depend largely on its speciation. In this study, the speciation of copper (Cu) in seawater was investigated via the fixed-point determination of electroactive Cu, acid-dissolved Cu, inert Cu, and total dissolved Cu using a voltammetric method with an electrochemical sensor. This method was found to be simple and effective for speciation analysis as no complicated pretreatment or separation steps were required, permitting its use for the direct determination of Cu speciation in real water samples with confirmed accuracy. Moreover, following simple electrolytic cleaning, the sensor exhibited good measurement stability and reproducibility when it was reused. Fixed-point determinations of electroactive Cu, acid-dissolved Cu, inert Cu, and total dissolved Cu in local seawater were carried out for 15 days. The total dissolved Cu concentration ranged from 45.03 to 122.85 nM, and its average concentration was 66.05 nM. The speciation of Cu was influenced by external environmental changes to some extent but was observed to remain relatively constant. The correlations between the concentrations of different Cu species and environmental parameters are discussed here in detail.

Keywords

Voltammetric determination Cu Speciation Seawater Environmental parameters 

Notes

Acknowledgements

This research was supported by the Youth Innovation Promotion Association (2011170) and the Equipment Development Project (YZ201558) of the Chinese Academy of Sciences. We thank MogoEdit for its linguistic assistance during the preparation of this manuscript.

Supplementary material

10872_2018_491_MOESM1_ESM.doc (199 kb)
Supplementary material 1 (DOC 199 kb)

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Copyright information

© The Oceanographic Society of Japan and Springer Japan KK, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Key Laboratory of Coastal Environmental Processes and Ecological RemediationYantai Institute of Coastal Zone Research, Chinese Academy of SciencesYantaiPeople’s Republic of China
  2. 2.University of Chinese Academy of SciencesBeijingPeople’s Republic of China

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