• 文献标题:   Selective determination of L-dopa in the presence of ascorbic acid and uric acid using a 3D graphene foam
  • 文献类型:   Article
  • 作  者:   YUE HY, ZHANG H, HUANG S, GAO X, CHANG J, LIN XY, YAO LH, WANG LP, GUO EJ
  • 作者关键词:   ldopa, nickel foam, graphene foam, biosensor
  • 出版物名称:   JOURNAL OF SOLID STATE ELECTROCHEMISTRY
  • ISSN:   1432-8488 EI 1433-0768
  • 通讯作者地址:   Harbin Univ Sci Technol
  • 被引频次:   3
  • DOI:   10.1007/s10008-018-4047-3
  • 出版年:   2018

▎ 摘  要

Three-dimensional interconnected network graphene foam (GF) was synthesized by chemical vapor deposition. The GF was transferred onto indium tin oxide glass, acting as an electrode for the selective determination of L-dopa in the presence of ascorbic and uric acid. Using differential pulse voltammetry (DPV) method, the oxidation peak current is well linear with L-dopa concentration in the range of 0.05-1M with a sensitivity of 2.64AM(-1) and in the range of 1-40M with a sensitivity of 1.82AM(-1). The detection limit of this electrode for L-dopa is about 20nM. The proposed electrode can also effectively avoid the interference of ascorbic acid and uric acid, making the proposed sensor suitable for the accurate determination of L-dopa in human urine fluids. This electrode will have a wide range of potential application prospect in electrochemical detection.