Here we demonstrate that the metal ion excess after precipitating a sparingly soluble metal salt can be conveniently determined by a secondary precipitation of a metal salt on an electrode surface, followed by measuring the solid-state electrochemical response of that salt. As an example, the analysis of the arsenic content of solutions is presented.

中文翻译：

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应用微粒伏安法评估沉淀反应后金属离子的过量：砷的测定

在这里，我们证明沉淀出难溶的金属盐后的金属离子过量可以通过在电极表面二次沉淀金属盐，然后测量该盐的固态电化学反应来方便地确定。例如，介绍了溶液中砷含量的分析。