Alumina Polished Glassy Carbon Electrode as a Simple Electrode for Lower Potential Electrochemical Detection of Dopamine in its Sub‐micromolar Level
Полировка стеклоуглеродного электрода оксидом алюминия как простой метод получения электрода для электрохимического определения допамина при пониженных потенциалах на субмикромолярном уровне
2015-09-03
SCID: 54.1/s62b624v
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alumina polished glassy carbon electrodecyclic voltammetrydifferential pulse voltammetrydopamine detectionlimit of detection 0.046 µmol L−1
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Abstract (AI)
Abstract The electrochemical behaviour of dopamine (DA) at a cleaned and alumina polished glassy carbon electrode (GCE) was studied using cyclic voltammetry (CV). The CV studies revealed that alumina polished GCE (AGCE) shows an enhanced oxidation peak current response with 217 mV negative potential shift towards DA than that of cleaned GCE. The differential pulse voltammetry result shows that the AGCE detects the DA in the linear concentration ranges from 0.15 to 25.25 µmol L−1. The limit of detection was calculated as 0.046 µmol L−1 with a sensitivity of 3.74 µA µmol L−1 cm−2 for the determination of DA. The fabricated AGCE shows a satisfactory selectivity, practicality along with appreciable repeatability and reproducibility.
Key Findings
1
AGCE demonstrates satisfactory selectivity, practicality, repeatability, and reproducibility for DA determination.
2
AGCE shifts the DA oxidation potential by 217 mV negatively compared to cleaned GCE.
3
Alumina-polished glassy carbon electrode (AGCE) produces an enhanced dopamine (DA) oxidation peak current versus cleaned GCE.
4
Differential pulse voltammetry with AGCE yields a linear DA detection range of 0.15 to 25.25 µmol L−1.
5
The limit of detection for DA using AGCE is 0.046 µmol L−1 with a sensitivity of 3.74 µA µmol L−1 cm−2.
Research Object
Alumina-polished glassy carbon electrode (AGCE) used for electrochemical detection of dopamine
Research Subject
Electrochemical detection performance for dopamine at sub-micromolar concentrations, including oxidation peak potential shift, sensitivity, linear range, limit of detection, selectivity, repeatability and reproducibility measured by cyclic and differential pulse voltammetry
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2015-09-03
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