Single‐Piece Solid‐Contact Pb2+‐Selective Electrodes Based on Thiophene Oligomer |
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| Authors: | Shuhua Xu Qun Yuan Shunyang Yu Xuran Wu |
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| Affiliation: | 1. Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Provincial Key Laboratory of Coastal Zone Environmental Processes, YICCAS, Yantai Shandong 264003, P.?R. China tel.: +86 535 2109157;2. fax: +86 535 2109157;3. Chemistry and Chemical Engineering College, Yantai University, Yantai 264005, P.?R. China |
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| Abstract: | A single‐piece solid‐contact Pb2+‐selective electrode was prepared by adding a thiophene oligomer into the ion‐selective cocktail directly. The one‐step fabrication yielded an electrode with Nernstian response spanning a wide concentration range of 10?3–10?8 mol L?1, and detection limit as low as 5.6×10?9 mol L?1. The electrode had a quick response time of approximately 10–15 s and showed excellent selectivity over the most common univalent and divalent cations. The practical application of the proposed electrode has been tested by determining Pb2+ in real water samples. |
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| Keywords: | Ion‐selective electrodes Solid‐contact Lead |
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