title: Carbon dots and chitosan composite film based biosensor for the sensitive and selective determination of dopamine.
abstract: A simple, sensitive and reliable dopamine (DA) biosensor was developed based on a carbon dots (CDs) and chitosan (CS) composite film modified glassy carbon electrode (CDs-CS/GCE). Under optimal conditions, the CDs-CS/GCE showed a better electrochemical response for the detection of DA than that of the glassy carbon electrode (GCE). The oxidation peak current (Ipa) of DA was linear with the concentration of DA in the range from 0.1 μM to 30.0 μM with the limit of detection as 11.2 nM (3S/N). The CDs-CS/GCE was applied to the detection of DA content in an injection solution of DA with satisfactory results.
authors.affiliation: Department of Chemistry and Environment Science, Zhangzhou Normal University, Zhangzhou 363000, PR China.
authors.forename: Qitong
authors.initials: Q
authors.lastname: Huang
authors.forename: Shirong
authors.initials: S
authors.lastname: Hu
authors.forename: Hanqiang
authors.initials: H
authors.lastname: Zhang
authors.forename: Jianhua
authors.initials: J
authors.lastname: Chen
authors.forename: Yasan
authors.initials: Y
authors.lastname: He
authors.forename: Feiming
authors.initials: F
authors.lastname: Li
authors.forename: Wen
authors.initials: W
authors.lastname: Weng
authors.forename: Jiancong
authors.initials: J
authors.lastname: Ni
authors.forename: Xiuxiu
authors.initials: X
authors.lastname: Bao
authors.forename: Yi
authors.initials: Y
authors.lastname: Lin
mesh_terms: D015374:Biosensing Techniques / Q000379:methods*; D002021:Buffers; D002244:Carbon / Q000737:chemistry*; D048271:Chitosan / Q000737:chemistry*; D004058:Diffusion; D004298:Dopamine / Q000032:analysis* / Q000737:chemistry; D004563:Electrochemistry; D004566:Electrodes; D006863:Hydrogen-Ion Concentration; D057230:Limit of Detection; D053761:Nanocomposites / Q000737:chemistry*; D010084:Oxidation-Reduction
chemical_list: D002021:Buffers; D002244:Carbon; D048271:Chitosan; D004298:Dopamine