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Title: Imidazole modified C-paste electrode in the determination of trace amounts of Mercury
Authors: Kannan, R.
Rajagopalan, S.R.
Lakshminarayanan, V.
Issue Date: 1995
Publisher: The Electrochemical Society of India
Citation: Journal of the Electrochemical Society of India, 1995, Vol.44, p90-96
Abstract: The imidazole-modified C-paste electrode was shown lo accumulate mercury (II) ions non- electrochemically from nitrate containing solutions at pH 7.0-7.3. The accumulated mercury gave well defined voltammograms, when subjected to voltammetric scale in a medium of potassium thiocyanate and perchloric acid; these are suitable for determination of mercury. In comparison with pure C-paste electrodes, the imidazole-CME is shown to offer improved resistance to interference by diverse types of ions present in natural waters. The method offered a sensitivity of 1.75 μA/ppm and a detection limit of 0.1 ppm (lor 15 min. accumulation time). The relative standard deviation was 12%.
Description: Restricted Access.
ISSN: 0013-466X
Copyright: 1995 The Electrochemical Society of India
Appears in Collections:Research Papers (SCM)

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