Anodic stripping voltammetric determination of vanadium(<scp>V</scp>) using a carbon paste electrode modified in situ with cetyltrimethylammonium bromide

DOI Web Site Web Site 被引用文献1件

抄録

<jats:title>Abstract</jats:title><jats:p>A method for the voltammetric determination of vanadium(v) using a carbon paste electrode in situ modified with cetyltrimethylammonium bromide (CTAB) is described. Vanadium is preconcentrated at the electrode surface via its anionic oxalate complex from acidic solution (0.01 M oxalic acid, 0.25 mM CTAB, pH 2.2) at a potential of −0.9 V [vs. the saturated calomel electrode (SCE)]. Simultaneously during accumulation, vanadium(v) in the complex is reduced to its tetravalent state. Differential pulse anodic stripping voltammetry exploiting the reoxidation can be used for the determination of trace levels of vanadium(v). Linearity between current and concentration exists for a range of 5 to 200 μg.L<jats:sup>−1</jats:sup> V<jats:sup>v</jats:sup> with a preconcentration time of 1 min. The limit of detection (calculated as 3 σ) is 0.07 μg.L<jats:sup>−1</jats:sup> with a preconcentration time of 10 min.</jats:p>

収録刊行物

被引用文献 (1)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ