基于乙炔黑糊剂和石墨烯复合电极的4-硝基苯酚的简便超灵敏测定

Facile and Ultrasensitive Determination of 4-Nitrophenol Based on Acetylene Black Paste and Graphene Hybrid Electrode.

作者信息

He Quanguo, Tian Yaling, Wu Yiyong, Liu Jun, Li Guangli, Deng Peihong, Chen Dongchu

机构信息

School of Life Sciences and Chemistry, Hunan University of Technology, Zhuzhou 412007, China.

Key Laboratory of Functional Metal-Organic Compounds of Hunan Province; Key Laboratory of functional Organometallic Materials of Hunan Provincial Universities; Department of Chemistry and Material Science, Hengyang Normal University, Hengyang 421008, China.

出版信息

Nanomaterials (Basel). 2019 Mar 13;9(3):429. doi: 10.3390/nano9030429.

4-nitrophenol (4-NP) is a hazardous waste and a priority toxic pollutant identified by US Environmental Protection Agency (EPA). Hence, in this paper, a voltammetric sensor was proposed for the direct and sensitive detection of 4-nitrophenol (4-NP) at nanomolar level in complex matrices by using graphene and acetylene black paste hybridized electrode (GR/ABPE). Under optimal conditions, the calibration curve demonstrates a linear relationship for 4-NP in the range from 20 nM to 8.0 μM and 8.0 μM to 0.1 mM separately with the detection limit of 8.0 nM. In addition to it, the performance of the GR/ABPE in practical applications was evaluated by detecting 4-NP in various water samples, and satisfactory recoveries were realized. Therefore, GR/ABPE may have a great potential application for facile and sensitive detection of 4-NP in complex matrices at nanomolar level.

4-硝基苯酚（4-NP）是一种危险废物，也是美国环境保护局（EPA）认定的优先有毒污染物。因此，本文提出了一种伏安传感器，用于通过使用石墨烯和乙炔黑糊混合电极（GR/ABPE）在复杂基质中直接且灵敏地检测纳摩尔级别的4-硝基苯酚（4-NP）。在最佳条件下，校准曲线表明4-NP在20 nM至8.0 μM以及8.0 μM至0.1 mM范围内分别呈线性关系，检测限为8.0 nM。除此之外，通过检测各种水样中的4-NP评估了GR/ABPE在实际应用中的性能，并实现了令人满意的回收率。因此，GR/ABPE在复杂基质中纳摩尔级别4-NP的简便灵敏检测方面可能具有巨大的潜在应用价值。