Application of electrogenerated chemiluminescence of luminol to determination of traces of cobalt(II) in aqueous alkaline solution |
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Authors: | Keijo E Haapakka |
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Institution: | Department of Chemistry, University of Turku, SF-20500 Turku 50 Finland |
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Abstract: | A selective method for determination of traces of cobalt(II) in aqueous alkaline solution has been developed, based on the electrochemical generation of luminescence from luminol at a rotating ring—disc electrode. The detection limit is 10-8 M, and the linear calibration range extends up to 3 × 10-6 M; the r.s.d. for 2.0 × 10-7 M cobalt is 6%. Of 21 metal ions, only chromium(III) and copper(II) interfere seriously; EDTA also interferes. |
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