This work proposes for the first time the use of biochar (BC) as a cost‐effective electrode modifier for simultaneous electroanalysis of similar organic compounds. BCs were prepared from Babassu petiole pyrolysis at five temperatures (500–900 °C) and characterized by FTIR, SEM, TG‐DTA and BET., which presented amorphous shapes with relative high surface areas (280–396 m² g⁻¹) and polar surface groups (T<700 °C). As a proof of concept, BC‐modified glassy carbon electrodes (BC/GCE) were studied using ferrocyanide probe and evaluated towards the simultaneous detection of catechol and hydroquinone (isomers), levofloxacin and norfloxacin (analogous structure), and tert‐butylhydroquinone and butylated hydroxyanisole. In all cases, BC improved the peak‐to‐peak separation, sensitivity and electrocatalytic activity, which highlights BC as a promising modifier to be used in simultaneous determinations of organic compounds with similar peak potentials.

中文翻译：

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Biochar：一种低成本的电极修饰剂，可对相似的有机化合物进行电催化，灵敏和选择性检测

这项工作首次建议使用生物炭（BC）作为具有成本效益的电极改性剂，以同时对相似的有机化合物进行电分析。BCs是由Babassu叶柄在五个温度（500–900°C）下热解制备的，并通过FTIR，SEM，TG-DTA和BET表征。它们呈现出相对较高的表面积（280–396 m ²  g ^-1）的无定形形状。）和极性表面基团（T <700°C）。作为概念的证明，使用亚铁氰化物探针对BC修饰的玻碳电极（BC / GCE）进行了研究，并对同时检测邻苯二酚和对苯二酚（异构体），左氧氟沙星和诺氟沙星（类似结构）以及叔丁基对苯二酚和丁基化的电极进行了评估。羟基茴香醚。在所有情况下，BC均改善了峰间分离，灵敏度和电催化活性，这突出表明BC是一种有前途的改性剂，可用于同时测定具有相似峰电势的有机化合物。