Acidity compensation of electrochemical measurements for on-site monitoring of heavy metals

Konstantinos Christidis*, Peter K J Robertson, Ken S. Gow, Pat M. Pollard

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


This paper presents an electrochemical instrumentation system capable of real-time in situ detection of heavy metals. A practical approach to introduce acidity compensation against changes in amplitude of the peak currents is also presented. The compensated amplitudes can then be used to predict the concentration level of heavy metals. The system uses differential pulse anodic stripping voltammetry, which is a precise and sensitive analytical method with excellent limits of detection. The instrument is capable of detecting lead, cadmium, zinc, nickel and copper with good sensitivity and precision. The system avoids expensive and time-consuming procedures and may be used in a variety of situations to help environmental assessment and control. 

Original languageEnglish
Pages (from-to)323-333
Number of pages11
JournalTransactions of the Institute of Measurement and Control
Issue number4
Publication statusPublished - Oct 2006


  • Acidity effect
  • Electrochemical detection
  • Heavy metals
  • Instrumentation
  • Voltammetry

ASJC Scopus subject areas

  • Instrumentation


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