Selective solid phase extraction of palladium by adsorption of its 5(p-dimethylaminobenzylidene)rhodanine complex on silica-PEG as a new adsorbent |
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| Authors: | Saadat Rastegarzadeh Nahid Pourreza Ali R Kiasat Hossein Yahyavi |
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| Institution: | 1. State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Hunan, Changsha, 410082, People’s Republic of China
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| Abstract: | The nickel(II) complex of a deoxyribonucleic acid (DNA-Ni2+) was directly electrodeposited on the surface of a glassy carbon electrode (GCE) to give a DNA-Ni/GCE electrode. It was investigated in terms of its capability of electro-oxidizing methanol in alkaline medium. It exhibits stable redox behavior of the Ni2+/Ni3+ couple by cyclic voltammetry. The DNA-Ni2+ membrane showed excellent electrocatalytic suitability for the electro-oxidation of methanol, is stable and responds reproducibly. The linear range for the detection of methanol in alkaline medium is from 8.0 µM to 2.4 mM, and the limit of detection is 2.0 µM (at a signal-to-noise ratio of 3). |
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