采用基于石墨的电极的多次脉冲安培法电化学测定酚类衍生物。
The electrochemical determination of phenolic derivates using multiple pulsed amperometry with graphite based electrodes.
机构信息
Politehnica University of Timisoara, P-ta Victoriei no. 2, 300006 Timisoara, Romania.
出版信息
Talanta. 2010 Jan 15;80(3):1068-72. doi: 10.1016/j.talanta.2009.07.036.
The electrochemical determinations of 4-chlorophenol (4-CP) and 4-nitrophenol (4-NP) by chronoamperometry (CA) and multiple pulsed amperometry (MPA) using expanded graphite-epoxy composite (EG-Epoxy) and rotating spectral graphite disc (SG) electrodes are reported. The electrochemical behaviours of both electrodes in the presence of organics informed about oxidation peak potential and the electrode fouling with organics concentration increasing. Setting up the oxidation peak potential as detection potential, only SG gave good electroanalytical performance using CA. However, by MPA applying both electrodes exhibited the capability to assess electrochemically and quantitatively the pollutants from aqueous solutions. UV spectrometric method detecting 4-CP and 4-NP at lambda=280nm and lambda=398nm wavelength, respectively was used for validation and parallel determinations.
采用膨胀石墨-环氧树脂复合材料（EG-Epoxy）和旋转光谱石墨盘（SG）电极，通过计时安培法（CA）和多脉冲安培法（MPA）电化学测定了 4-氯苯酚（4-CP）和 4-硝基苯酚（4-NP）。在有机物存在的情况下，两种电极的电化学行为表明了氧化峰电位以及电极随着有机物浓度的增加而发生的污垢现象。将氧化峰电位设定为检测电位，只有 SG 电极在使用 CA 时具有良好的电分析性能。然而，通过 MPA 应用两种电极都具有评估和定量测定水溶液中污染物的电化学能力。采用紫外分光光度法，分别在 lambda=280nm 和 lambda=398nm 波长下检测 4-CP 和 4-NP，用于验证和并行测定。
Zotero 插件