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                  Determination of Trace Manganese by Square-Wave Stripping

                  發布者:本網 | 瀏覽次數:

                  Determination of Trace Manganese by Square-Wave Stripping
                  Voltammetry
                  Shujie Wang, Baoxian Ye*
                  Department of Chemistry, Zhengzhou University, Zhengzhou 450052, P. R. China
                  *e-mail: yebx@zzu.edu.cn
                  Received: August 6, 2007
                  Accepted: January 9, 2008
                  Abstract
                  A novel method of determining trace manganese by square-wave stripping voltammetry with simultaneous plating
                  mercury electrode is described in this paper. Well-defined stripping peaks of manganese are obtained in H3BO4-
                  NaOH buffer (pH 8.0) and peak currents are in good linear relationship with manganese concentrations in two ranges:
                  from 0.36 nM to 36 nM and from 73 nM to 909 nM. The obtained detection limit is 0.18 nM and relative standard
                  deviation is 2.3% (n?;;;7) under a predeposition time of 90 s. This proposed method has been used for the determination
                  of trace manganese in real plasma samples with satisfiable results and good matching with the results of graphite
                  furnace atomic absorption spectrometry.
                  Keywords: Manganese, Square-wave stripping voltammetry, H3BO4-NaOH buffer, Plasma samples
                  DOI: 10.1002/elan.200704136

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