Ratiometric electrochemical sensor based on polythionine/multiwalled carbon nanotube composite for butylated hydroxyanisole determination
Ratiometric electrochemical sensor based on polythionine/multiwalled carbon nanotube composite for butylated hydroxyanisole determination
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基于聚硫堇/多壁碳纳米管复合材料的比率电化学传感器用于测定丁基羟基苯甲醚
DOI：
10.1016/j.jallcom.2022.166659
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发表时间：
2022-08
影响因子：
6.2
通讯作者：
Yong Wang
中科院分区：
文献类型：
--
作者：
Qin Xiao;Luyao Wang;Wenfang Fan;Qianfen Zhuang;Yong Wang
采用聚硫氨酸/多壁碳纳米管复合修饰玻碳电极（pThi/MWCNT/GCE），研制了一种快速、简便、准确测定BHA的比例电化学传感器。采用各种分析技术对pThi/MWCNT/GCE的制备进行了表征。pThi/MWCNT复合材料具有大的比表面积，良好的导电性和高的电催化能力。此外，由于内参比聚硫氨酸探针的内置校正功能，使用涉及BHA和pThi电氧化的比率信号提高了BHA分析的准确性和可靠性。在0.5 ~ 70.0 μM的浓度范围内可获得线性比例信号，检出限为0.21 μM （S/N= 3）。该传感器具有高选择性、高重现性和良好的稳定性，可用于食用油样品中BHA的分析，结果令人满意。
A ratiometric electrochemical sensor is developed for fast, simple and accurate determination of BHA using polythionine/multiwalled carbon nanotube composite modified glassy carbon electrode (pThi/MWCNT/GCE). The preparation of pThi/MWCNT/GCE is characterized by various analytical techniques. The pThi/MWCNT composite is demonstrated to possess large specific surface area, good electrical conductivity, and high electrocatalytic ability. Moreover, it is demonstrated that the use of ratiometric signal involving the electro-oxidation of both BHA and pThi improves the accuracy and reliability of the BHA analysis due to the built-in correction function of the inner reference polythionine probe. A linear ratiometric signal can be achieved over the concentration range of 0.5–70.0 μM with the detection limit of 0.21 μM (S/N= 3). The BHA sensor also exhibits high selectivity, high reproducibility, and good stability, and can be used for the analysis of BHA in edible oil samples with satisfactory results.
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