Novel nanoarchitecture of arginine-glycine-aspartate conjugated gold nanoparticles: a sensitive and selective platform for detecting arachidonic acid
文献类型： 外文期刊
作者： Zhang, Nana 1 ; Li, Jian 2 ; Zhang, Panpan 1 ; Yang, Xiaodi 1 ; Sun, Chong 3 ;
作者机构： 1.Nanjing Normal Univ, Environm Sci Res Inst, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Nanjing 210097, Jiangsu, Peoples R China
2.Nanjing Univ Tradit Chinese Med, Neurosurg Dept, Affiliated Hosp, Nanjing 210029, Jiangsu, Peoples R China
3.Jiangsu Acad Agr Sci, Inst Agr Prod Proc, Nanjing 210014, Jiangsu, Peoples R China
关键词： RGD-Au nanomaterial; Arachidonic acid; 1; 4-Naphthoquinone; Electrochemical sensor
期刊名称：ANALYTICAL AND BIOANALYTICAL CHEMISTRY （ 影响因子：4.142； 五年影响因子：3.863 ）
ISSN： 1618-2642
年卷期： 2019 年 411 卷 27 期
页码：
收录情况： SCI
摘要： A novel electrochemical approach for determination of arachidonic acid (ARA) was developed based on the linear arginine-glycine-aspartic-Au (RGD-Au) nanomaterial modified on glassy carbon electrode (GCE). The prepared material was characterized by transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM), ultraviolet-visible spectroscopy (UV-vis), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The electrochemical signal was obtained from the reduction of 1,4-naphthoquinone and ARA served as a proton source. Under the optimum experimental conditions, the RGD-Au-based electrode was used to analyze ARA. Meanwhile, the electrochemical characteristics were also studied by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and linear sweep voltammetry (LSV). The sensor showed a wider linear range from 0.5 to 100 mu M and the linear fitting equation was I-p (mu A) = 0.0721 c + 2.4583 (R-2 = 0.9987) with a detection limit of 80 nM. The application of the sensor in real samples was tested and compared with that of LC-MS/MS. This sensor would be a promising platform for detection of ARA in blood plasma. Graphical abstract
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