Due to their highly porous structures, metal organic framework materials are widely used in analytic areas. In this paper, Cr-metal organic framework (MIL-101(Cr)) modified electrode was prepared and then was used as electrochemical sensor for the detection of bisphenol A (BPA). By using one kind of surfactant of cetyltrimethylammonium bromide (CTAB), the analytic performances of MIL-101 (Cr) towards BPA detection were greatly improved. Compared with pure MIL-101 (Cr), the differential pulse voltammetry (DPV) behavior of CTAB/MIL-101 (Cr) was improved 3.0 times in the presence of BPA. The hydrophobic long chain alkanes of CTAB can improve the enrichment and electrochemical oxidation for BPA. The CTAB/MIL-101 (Cr) sensor exhibited a linear range from 20 to 350 nM and a low detection limit of 9.95 nM (LOD = 3sb/S) and showed good reproducibility, stability and selectivity. Finally, real samples of dusts from E-waste recycling area in South China were collected and the CTAB/MIL-101 (Cr) sensor demonstrated satisfactory results for BPA detection from these dust samples.

中文翻译：

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表面活性剂辅助Cr-金属有机骨架检测电子垃圾回收区粉尘中双酚A

由于其高度多孔的结构，金属有机骨架材料被广泛应用于分析领域。本文制备了铬-金属有机骨架（MIL-101（Cr））修饰电极，并将其用作电化学传感器检测双酚A（BPA）。通过使用一种十六烷基三甲基溴化铵（CTAB）表面活性剂，MIL-101（Cr）对BPA检测的分析性能得到了很大的提高。与纯 MIL-101 (Cr) 相比，CTAB/MIL-101 (Cr) 在 BPA 存在下的差分脉冲伏安 (DPV) 行为提高了 3.0 倍。CTAB 的疏水长链烷烃可以改善 BPA 的富集和电化学氧化。CTAB/MIL-101 (Cr) 传感器表现出 20 至 350 nM 的线性范围和 9.95 nM (LOD = 3sb/S) 的低检测限，并显示出良好的重现性，稳定性和选择性。最后，收集了来自华南电子垃圾回收区的真实粉尘样本，CTAB/MIL-101 (Cr) 传感器对这些粉尘样本中的 BPA 检测显示出令人满意的结果。