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Electrocatalytic detection of dopamine in the presence of ascorbic acid and uric acid using single-walled carbon nanotubes modified electrode.
Colloids Surf B Biointerfaces. 2012 Sep 01; 97:32-6.CS

Abstract

Single-walled carbon nanotubes (SWCNTs) fabricated by sodium dodecyl sulfate (SDS) (f-SWCNTs) modified glassy carbon electrodes (f-SWCNTs/GCE) for the simultaneous determination of ascorbic acid (AA), dopamine (DA) and uric acid (UA). The f-SWCNTs/GCE displayed very good electrochemical catalytic activities with respect to GCE. The oxidation over-potentials of DA and UA decreased dramatically, and their oxidation peak currents increased significantly at f-SWCNTs/GCE compared to those obtained at the bare GCE. Simultaneously, the oxidation peak currents of AA decreased accordingly. The f-SWCNTs/GCE not only divide the overlapping voltammetric responses of them into individual voltammetric peaks, but also totally eliminate the interference from AA and distinguish DA from UA. The catalytic peak currents obtained from square-wave voltammetry increased linearly with increasing DA concentrations in the range of 5.0×10(-6) to 1.0×10(-4)M with a detection limit of 2.0×10(-8)M (S/N=3). The method was also successfully applied for determination of DA and showed good recovery in some biological fluids.

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Authors+Show Affiliations

Li Y
Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
Du J
No affiliation info available
Yang J
No affiliation info available
Liu D
No affiliation info available
Lu X
No affiliation info available

MeSH

Ascorbic AcidCatalysisDopamineElectrodesNanotechnologyNanotubes, CarbonUric Acid

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22580482

Citation

Li, Yaya, et al. "Electrocatalytic Detection of Dopamine in the Presence of Ascorbic Acid and Uric Acid Using Single-walled Carbon Nanotubes Modified Electrode." Colloids and Surfaces. B, Biointerfaces, vol. 97, 2012, pp. 32-6.
Li Y, Du J, Yang J, et al. Electrocatalytic detection of dopamine in the presence of ascorbic acid and uric acid using single-walled carbon nanotubes modified electrode. Colloids Surf B Biointerfaces. 2012;97:32-6.
Li, Y., Du, J., Yang, J., Liu, D., & Lu, X. (2012). Electrocatalytic detection of dopamine in the presence of ascorbic acid and uric acid using single-walled carbon nanotubes modified electrode. Colloids and Surfaces. B, Biointerfaces, 97, 32-6. https://doi.org/10.1016/j.colsurfb.2012.03.029
Li Y, et al. Electrocatalytic Detection of Dopamine in the Presence of Ascorbic Acid and Uric Acid Using Single-walled Carbon Nanotubes Modified Electrode. Colloids Surf B Biointerfaces. 2012 Sep 1;97:32-6. PubMed PMID: 22580482.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Electrocatalytic detection of dopamine in the presence of ascorbic acid and uric acid using single-walled carbon nanotubes modified electrode. AU - Li,Yaya, AU - Du,Jie, AU - Yang,Jiandong, AU - Liu,Dong, AU - Lu,Xiaoquan, Y1 - 2012/04/27/ PY - 2012/01/16/received PY - 2012/02/27/revised PY - 2012/03/30/accepted PY - 2012/5/15/entrez PY - 2012/5/15/pubmed PY - 2012/10/4/medline SP - 32 EP - 6 JF - Colloids and surfaces. B, Biointerfaces JO - Colloids Surf B Biointerfaces VL - 97 N2 - Single-walled carbon nanotubes (SWCNTs) fabricated by sodium dodecyl sulfate (SDS) (f-SWCNTs) modified glassy carbon electrodes (f-SWCNTs/GCE) for the simultaneous determination of ascorbic acid (AA), dopamine (DA) and uric acid (UA). The f-SWCNTs/GCE displayed very good electrochemical catalytic activities with respect to GCE. The oxidation over-potentials of DA and UA decreased dramatically, and their oxidation peak currents increased significantly at f-SWCNTs/GCE compared to those obtained at the bare GCE. Simultaneously, the oxidation peak currents of AA decreased accordingly. The f-SWCNTs/GCE not only divide the overlapping voltammetric responses of them into individual voltammetric peaks, but also totally eliminate the interference from AA and distinguish DA from UA. The catalytic peak currents obtained from square-wave voltammetry increased linearly with increasing DA concentrations in the range of 5.0×10(-6) to 1.0×10(-4)M with a detection limit of 2.0×10(-8)M (S/N=3). The method was also successfully applied for determination of DA and showed good recovery in some biological fluids. SN - 1873-4367 UR - https://www.unboundmedicine.com/medline/citation/22580482/Electrocatalytic_detection_of_dopamine_in_the_presence_of_ascorbic_acid_and_uric_acid_using_single_walled_carbon_nanotubes_modified_electrode_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0927-7765(12)00241-X DB - PRIME DP - Unbound Medicine ER -