Department of Analytical Chemistry, University of Pardubice, Studentská 573, CZ-532 10 Pardubice, Czech Republic.
Talanta. 2011 Oct 15;85(5):2700-2. doi: 10.1016/j.talanta.2011.07.078. Epub 2011 Jul 29.
A new procedure was elaborated to determine mercury(II) using an anodic stripping square-wave voltammetry at the antimony film carbon paste electrode (SbF-CPE). In highly acidic medium of 1M hydrochloric acid, voltammetric measurements can be realized in a wide potential window. Presence of cadmium(II) allows to separate peaks of Hg(II) and Sb(III) and apparently catalyses reoxidation of electrolytically accumulated mercury, thus allowing its determination at ppb levels. Calibration dependence was linear up to 100 ppb Hg with a detection limit of 1.3 ppb. Applicability of the method was tested on the real river water sample.
一种新的程序被详细阐述，用于在锑膜碳糊电极（SbF-CPE）上使用阳极溶出方波伏安法来测定汞（II）。在 1M 盐酸的强酸性介质中，可以在宽电位窗口中进行伏安测量。镉（II）的存在允许分离 Hg（II）和 Sb（III）的峰，并且显然催化了电解累积的汞的再氧化，从而可以在 ppb 水平下对其进行测定。校准依赖性在 100ppb Hg 以下呈线性，检测限为 1.3ppb。该方法的适用性在实际河水样品上进行了测试。
