The determination of carbofuran (CBF) in herbs (wild chamomile and Saint-John's-wort) was developed using a carbon-containing electrode (CCE) modified with carbon ink (CI) containing chromatographic sorbent (CS) based on chromaton (Ch), polyethylene glycol (PEG), and iron acetylacetonate (Fe(AA)₃). The surface morphology of the Ch/PEG/Fe(AA)₃/CI/CCE was investigated by scanning electron microscopy (SEM) in backscattered-electron (BSE) mode and by electrochemical impedance spectroscopy (EIS). Electrochemically inactive CBF was converted to an electrochemically active phenolic analogue CBFP by an alkaline hydrolysis. The electrochemical behavior of CBFP at Ch/PEG/Fe(AA)₃/CI/CCE was studied by cyclic voltammetry (CV) in a phosphate buffer solution (PBS) pH 6.86 in the potential range from −0.4 to 1.2 V. Under the optimal experimental conditions, linear concentration dependences in the concentration range from 0.25 to 10 µmol·L⁻¹ were obtained by linear scan voltammetry in the first derivative mode (LSVFD) with limit of detection (LOD) 0.08 µmol·L⁻¹. The proposed Ch/PEG/Fe(AA)₃/CI/CCE demonstrated good sensitivity and selectivity for the determination of CBF after its conversion to CBFP. The use of sorbents as modifying agents of electrodes for the determination of carbamate pesticides opens up the possibilities for “green” electroanalytical chemistry.

使用含碳墨水 (CI) 改性的含碳电极 (CCE) 开发了测定草药（野洋甘菊和圣约翰草）中克百威 (CBF) 的方法，该电极 (CCE) 含有基于色度 (Ch) 的色谱吸附剂 (CS)，聚乙二醇 (PEG) 和乙酰丙酮铁 (Fe(AA) ₃ )。通过背散射电子 (BSE) 模式下的扫描电子显微镜 (SEM) 和电化学阻抗谱 (EIS)研究了 Ch/PEG/Fe(AA) ₃ /CI/CCE的表面形态。通过碱性水解将电化学惰性的 CBF 转化为具有电化学活性的酚类类似物 CBFP。CBFP 在 Ch/PEG/Fe(AA) _{3 下}的电化学行为/CI/CCE 通过循环伏安法 (CV) 在磷酸盐缓冲溶液 (PBS) pH 6.86 中在 -0.4 至 1.2 V 的电位范围内进行研究。 在最佳实验条件下，浓度范围为 0.25 至 10 µmol·L ^-1是通过线性扫描伏安法在一阶导数模式（LSVFD）下获得的，检测限（LOD）为0.08 µmol·L ^-1。提出的 Ch/PEG/Fe(AA) ₃ /CI/CCE 在转化为 CBFP 后测定 CBF 时表现出良好的灵敏度和选择性。使用吸附剂作为电极改性剂来测定氨基甲酸酯农药为“绿色”电分析化学开辟了可能性。