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Enhanced Electrocatalytic Activity of Ni‐CNT Nanocomposites for Simultaneous Determination of Epinephrine and Dopamine
Electroanalysis ( IF 2.7 ) Pub Date : 2019-07-31 , DOI: 10.1002/elan.201900201 Perumal Manivel 1 , Annadurai Thamilselvan 1 , Venkatachalam Rajagopal 1 , Noel Nesakumar 2 , Vembu Suryanarayanan 1
Electroanalysis ( IF 2.7 ) Pub Date : 2019-07-31 , DOI: 10.1002/elan.201900201 Perumal Manivel 1 , Annadurai Thamilselvan 1 , Venkatachalam Rajagopal 1 , Noel Nesakumar 2 , Vembu Suryanarayanan 1
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A promising electrochemical sensor based nickel‐carbon nanotube (Ni‐CNT) modified on glassy carbon (GC) electrode had been developed and the properties of the modified electrode were characterized by multispectroscopic analysis. The fabricated sensor (GC/Ni‐CNT) electrode was utilized to determine the catecholamines such as epinephrine and dopamine simultaneously. Differential pulse voltammetry and amperometry were used to verify the electrochemical behavior of the studied compounds. The GC/Ni‐CNT based amperometric sensor showed a wide linear range and low detection limit with high analytical sensitivity of 8.31 and 6.61 μA μM−1 for EP and DA, respectively which demonstrates better characteristics compared to other electrodes reported in the literature. Further, no significant change in amperometric current response was observed in presence of biological interference species such as glucose, cysteine, citric acid, uric acid and ascorbic acid in the detection of EP and DA. The utility of this GC/Ni‐CNT electrode was well established for the determination of EP and DA in human urine samples.
中文翻译：
Ni-CNT纳米复合材料同时测定肾上腺素和多巴胺的增强的电催化活性
已经开发了一种有前途的，在玻璃碳（GC）电极上改性的基于电化学传感器的镍碳纳米管（Ni-CNT），并通过多光谱分析对改性电极的性能进行了表征。所制造的传感器（GC / Ni-CNT）电极用于同时测定儿茶酚胺，例如肾上腺素和多巴胺。差分脉冲伏安法和安培法用于验证所研究化合物的电化学行为。基于GC / Ni-CNT的安培传感器显示出宽线性范围和低检测限，具有8.31和6.61μAμM -1的高分析灵敏度与文献中报道的其他电极相比，EP和DA分别具有更好的特性。此外，在检测EP和DA时，在存在生物干扰物（例如葡萄糖，半胱氨酸，柠檬酸，尿酸和抗坏血酸）的情况下，未观察到安培电流响应的显着变化。该GC / Ni-CNT电极的实用性已很好地用于测定人尿液样品中的EP和DA。
更新日期：2019-11-18
中文翻译：
Ni-CNT纳米复合材料同时测定肾上腺素和多巴胺的增强的电催化活性
已经开发了一种有前途的，在玻璃碳（GC）电极上改性的基于电化学传感器的镍碳纳米管（Ni-CNT），并通过多光谱分析对改性电极的性能进行了表征。所制造的传感器（GC / Ni-CNT）电极用于同时测定儿茶酚胺，例如肾上腺素和多巴胺。差分脉冲伏安法和安培法用于验证所研究化合物的电化学行为。基于GC / Ni-CNT的安培传感器显示出宽线性范围和低检测限，具有8.31和6.61μAμM -1的高分析灵敏度与文献中报道的其他电极相比，EP和DA分别具有更好的特性。此外，在检测EP和DA时，在存在生物干扰物（例如葡萄糖，半胱氨酸，柠檬酸，尿酸和抗坏血酸）的情况下，未观察到安培电流响应的显着变化。该GC / Ni-CNT电极的实用性已很好地用于测定人尿液样品中的EP和DA。
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