Perchlorate-selective polymeric membrane electrode based on a cobaloxime as a suitable carrier |
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| Affiliation: | 1. Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, PR China;2. Department of Applied Chemistry, College of Science, Nanjing University of Technology, Nanjing 210009, PR China;1. Institute of New Catalytic Materials Science and Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), College of Chemistry, Nankai University, Tianjin 37001, China;2. College of Environmental Science and Engineering, Nankai University, Tianjin 37001, China;3. Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China;1. Departamento de Química – Universidade Federal de Ouro Preto, 35400-000 Ouro Preto, MG, Brazil;2. Departamento de Química – Universidade Federal de Santa Catarina, 88040-900 Florianópolis, SC, Brazil;3. Faculdade de Engenharia Química – Universidade Estadual de Campinas, 13083-970 Campinas, SP, Brazil;4. Departamento de Física – Universidade Federal do Paraná, 81531-970 Curitiba, PR, Brazil;5. Departamento de Química – Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, MG, Brazil;1. Department of Materials Science and Nanotechnology Engineering, Abdullah Gül University, Kayseri, Turkey;2. Department of Electrical and Electronics Engineering, Abdullah Gül University, Kayseri, Turkey;3. Department of Mechanical Engineering, Abdullah Gül University, Kayseri, Turkey;1. School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Guangzhou 510006, PR China;2. Key Laboratory of Functional Small Organic Molecule, Ministry of Education and Department of Chemistry, Jiangxi Normal University, Nanchang 330022, PR China |
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| Abstract: | A cobaloxime ([chlorobis(dimethylglyoximeato)(triphenylphosphine)] cobalt (III), [Co(dmgH)2pph3Cl]) incorporated in a plasticized poly(vinyl chloride) membrane was used to develop a perchlorate-selective electrode. The influence of membrane composition on the electrode response was studied. The electrode exhibits a Nernstian response over the perchlorate concentration range 1.0 × 10−6 to 1 × 10−1 mol l−1 with a slope of −56.8 ± 0.7 mV per decade of concentration, a detection limit of 8.3 × 10−7, a wide working pH range (3–10) and a fast response time (<15 s). The electrode shows excellent selectivity towards perchlorate with respect to many common anions. The electrode was used to determine perchlorate in water and human urine. |
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