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Construction of Nafion/Hb/Au/ZIF-8/CILE and its application as electrochemical sensor for determination of bromate and nitrite

机译:Nafion / Hb / Au / Zif-8 / Cile的构建及其作为电化学传感器的应用,用于测定溴酸盐和亚硝酸盐

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In this paper zinc-based metal organic framework material (ZIF-8) modified carbon ionic liquidelectrode (CILE) was prepared and electrodeposited with gold nanoparticles to get a composite modifiedelectrode, which was used as the sensing interface for the immobilization of hemoglobin (Hb) withNafion to prepare a modified electrode (Nafion/Hb/Au/ZIF-8/CILE). Electrochemical behaviors of Hbon the modified electrode were checked by cyclic voltammetry with a pair of well-defined redox peaksappeared. The effects of pH and scan rate on direct electrochemistry of Hb were studied withelectrochemical parameters calculated. The prepared electrochemical enzyme sensor showed goodcatalytic activity to the electroreduction of bromate and nitrite with the linear ranges from 0.5 to 10.0mmol/L and from 0.1 to 0.8 mmol/L, respectively. The detection limits were calculated as 0.83 mmol/Land 0.03 mmol/L, and the water samples were analyzed to prove the practical application.
机译:在本文中,制备锌基金属有机骨架材料(ZIF-8)改性碳离子液体电极(Cile)并用金纳米颗粒电沉积以获得复合改性电极,用作血红蛋白的固定的传感界面(HB)。用来制备改性电极(Nafion / Hb / Au / Zif-8 / Cile)。通过循环伏安法检查HBON的电化学行为,用一对明确定义的氧化还原检查改性电极。用计算的电化学参数研究了PH和扫描速率对Hb直接电化学的影响。制备的电化学酶传感器显示出溴酸盐的电气和亚硝酸盐的良好活性,线性范围为0.5至10.0mmol / L和0.1至0.8mmol / L.将检测限制计算为0.83mmol / Land 0.03mmol / L,并分析水样以证明实际应用。

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