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3023729 
Journal Article 
Alizarin red S functionalized mesoporous silica modified glassy carbon electrode for electrochemical determination of anthracene 
Liu, S; Wei, M; Zheng, X; Xu, S; Xia, F; Zhou, C 
2015 
Yes 
Electrochimica Acta
ISSN: 0013-4686 
Elsevier Ltd 
OXFORD 
160 
108-113 
English 
WOS:000351115900016 
In the paper, a novel and sensitive electrochemical sensor based on modification of electroactive alizarin red S functionalized mesoporous silica material SBA15 onto glassy carbon electrode (ARS-SBA15/GCE) was developed. Alizarin red S, called electrochemical probe that can selectively recognize polycyclic aromatic hydrocarbons (PAHs), as tools for the detection of tricyclic aromatic hydrocarbon anthracene. The morphology and interface property of ARS modified SBA15 (ARS-SBA15) were examined by transmission electron microscopy (TEM) and fourier transform infrared spectroscopy (FTIR). Taking advantage of the pi-pi stacking force between alizarin red S and anthracene, the ARS-SBA15/GCE sensor could detect anthracene quantitatively in a wide range of 1.0 pM-10.0 nM and a low detection limit of 0.5 pM (S/N = 3). Other PAHs, such as naphthalene, phenanthrene, pyrene, and benzo[ a] pyrene show little interference on the detection. Consequently, a simple and sensitive electrochemical method was proposed for the determination of anthracene, which can be used to determine anthracene in waste water samples. The electrochemical method provides a general tool that complements the commonly used spectroscopic methods and immune method for the detection of PAHs. (C) 2014 Elsevier Ltd. All rights reserved. 
Alizarin red S; Hexagonal mesoporous silica; Polycyclic aromatic hydrocarbons; Anthracene; Selectivity