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Determination of copper(II) based on its inhibitory effect on the cathodic electrochemiluminescence of lucigenin

Microchimica Acta, ISSN: 1436-5073, Vol: 184, Issue: 3, Page: 693-697
2017
  • 10
    Citations
  • 0
    Usage
  • 4
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    10
    • Citation Indexes
      10
  • Captures
    4

Article Description

A simple method is described for the determination of copper(II) ions based on the cathodic electrochemiluminescence (ECL) of lucigenin which is quenched by Cu(II). The blue ECL is best induced at −0.45 V (vs. Ag/AgCl) at a scan rate of 50 mV·s. Under optimum conditions, the calibration plot is linear in the 3.0 to 1000 nM Cu(II) concentration range. The limit of detection is 2.1 nM at a signal-to-noise ratio of 3. Compared to other analytical methods, the one presented here is simple, fast, selective and cost-effective. It has been successfully applied in the analysis of copper ions in spiked tap water samples with recoveries ranging from 93.0% (at 50 nM concentration) to 105.7% (at 150 nM). [Figure not available: see fulltext.]

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