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首页> 外文期刊>IEEE sensors journal >A Closed 50-μ L Three-Electrode Minicell for Green Voltammetry Without O2 Interference
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A Closed 50-μ L Three-Electrode Minicell for Green Voltammetry Without O2 Interference

机译：用于绿色伏安法的闭合50-μL三电极Minicell没有O2干扰

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We report the construction and testing of a three-electrode electrochemical minicell for waste-minimizing and chemical resource-sparing green voltammetry. The minicell has a lid with boreholes for the working and reference electrodes and a stand with integrated 50-mu L Pt electrolyte container that also serves as the counter-electrode. In initial functionality tests the cell performed accurate voltammetric quantification of Pb2+, a pollutant in water and whisky, the drug paracetamol in a solution of a commercial tablet and, with a biosensor as working electrode, glucose in blood serum. The minicell was designed to be gas-tight, which allowed its use without electrolyte loss through evaporation, permitting uninterrupted, stable voltammetry scans for at least 11 hours. The gas-tightness of the minicell also enabled cathodic redox voltammetry to be performed free of interference by the electroreduction of dissolved oxygen, after electrolyte supplementation with glucose oxidase, catalase and glucose to perform enzymatic O-2 scavenging. The new minicell design is a practical, economical and environmentally-aware option for electroanalysis of pollutants, drugs, biomarkers and physiological or pathological constituents of body fluids. Moreover, it is a green tool for the electrochemical characterization and stability testing of organic and inorganic redox compounds and redox enzymes, especially when the absence of O-2 is necessary, for work under conditions in which oxygen reduction would interfere with the signal from the target. Since the minicell is compact and portable it can, in combination with a laptop-operated portable minipotentiostat, easily be used outside the laboratory and should therefore be applicable in on-site green environmental and clinical sample testing.
机译：我们报告了三电极电化学Minicell的构建和测试，用于废物最小化和化学资源排放的绿色伏安。 MINICELL具有盖子，该盖子具有用于加工和参考电极的钻孔，并且具有集成的50-MU L PT电解质容器的支架，其也用作反电极。在初始函数测试中，细胞进行PB2 +的精确伏安定量，水和威士忌的污染物，在商品片中的溶液中的药物扑热息醇，并且生物传感器作为工作电极，血清中的葡萄糖。 MINICELL设计成气密，这使其在没有电解质损失的情况下通过蒸发使用，允许不间断，稳定的伏安法扫描至少11小时。 Minicell的气密性也使阴极氧化还原伏安法没有通过溶解氧的电极而没有干扰，例如用葡萄糖氧化酶，过氧化氢酶和葡萄糖进行酶O-2清除。新的小型设计是一种实用，经济，环境感知的污染物，药物，生物标志物和体液生理或病理成分的能量分析。此外，它是有机和无机氧化还原化合物和氧化还原酶的电化学表征和稳定性测试的绿色工具，特别是当需要O-2时是必要的，在氧气减少干扰信号的条件下工作目标。由于MiniCell紧凑且便携，因此可以与笔记本电脑操作的便携式MinipotentiostataT结合，轻松在实验室外使用，因此应适用于现场绿色环境和临床样本测试。

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