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Voltammetric responses of trifluoroacetic acid, perfluorobutyric acid, perfluorohexanoic acid, and perfluorooctanoic acid (PFOA) were studied in acetonitrile/tetra-n-butylammonium perchlorate medium on glassy carbon electrode. All the four acids gave two voltammetric waves. PFOA exhibits blocking effects. In the presence of excess water, the first cathodic peak current increases, and the second peak...
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