title: Amplified electrochemical determination of maltol in food based on graphene oxide-wrapped tin oxide@carbon nanospheres.
abstract: The study presents a new approach for rapid and ultrasensitive detection of maltol using a glassy carbon electrode (GCE) modified with graphene oxide-wrapped tin oxide@carbon nanospheres (SnO2@C@GO). The morphological and components properties of SnO2@C@GO nanocomposites were investigated by means of X-ray diffraction spectroscopy, Raman spectroscopy, field emission scanning electron microscopy, high resolution transmission electron microscopy, and electrochemical impedance spectroscopy. SnO2@C@GO nanocomposite on a GCE had a synergetic effect on the electrochemical oxidation of maltol by means of square wave voltammetry. Under the optimum conditions, anodic peak current response of maltol was linear with its concentration in the range of 80nM-10μM, and a detection limit of 12nM was achieved for maltol. The experiment results presented that the method showed good selectivity, sensitivity, reproducibility, and long-term stability, as well as excellent potential for use as an ideal inexpensive voltammetric method applicable for complex food matrices.
authors: College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China; Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang 464000, China. Electronic address: gantianxynu@163.com.
authors: Tian
authors: T
authors: Gan
authors: College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China.
authors: Junyong
authors: J
authors: Sun
authors: College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China.
authors: Miaomiao
authors: M
authors: Yu
authors: College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China.
authors: Kaili
authors: K
authors: Wang
authors: College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China.
authors: Zhen
authors: Z
authors: Lv
authors: College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang 464000, China; Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains, Xinyang Normal University, Xinyang 464000, China.
authors: Yanming
authors: Y
authors: Liu
mesh_terms: D002244:Carbon / Q000737:chemistry; D058266:Dielectric Spectroscopy; D004566:Electrodes; D005504:Food Analysis / Q000379:methods*; D006108:Graphite / Q000737:chemistry; D046529:Microscopy, Electron, Transmission; D053761:Nanocomposites / Q000737:chemistry*; D054118:Nanospheres; D011753:Pyrones / Q000032:analysis*; D015203:Reproducibility of Results; D017971:Tin Compounds / Q000737:chemistry; D014961:X-Ray Diffraction
chemical_list: D011753:Pyrones; D017971:Tin Compounds; C008316:maltol; D002244:Carbon; D006108:Graphite; C045358:stannic oxide
keywords: Ascorbic acid (PubChem CID: 54670067); Carbon; Carbon (PubChem CID: 5462310); Citric acid (PubChem CID: 311); Electrochemical method; Glucose (PubChem CID: 5793); Glycine (PubChem CID: 750); Graphene oxide; Hydrogen peroxide (PubChem CID: 784); Hydroquinone (PubChem CID: 785); Maltol; Maltol (PubChem CID: 8369); Potassium ferricyanide (PubChem CID: 26250); Sucrose (PubChem CID: 5988); Tartaric acid (PubChem CID: 444305); Tin oxide; Tin oxide (PubChem CID: 29011)