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- W4214642690 abstract "Developing an accurate, sensitive, and efficient portable device for simultaneous detection of disease-related biomolecules is an attractive challenge for point-of-care testing (POCT). In this work, we introduced a novel graphene-based electrochemical flow analysis device (GEFAD), which combined a 3D-printed flow cell with a three-electrode system based on a gold nanoparticle-modified graphene (AuNPs@Gr) working electrode to simultaneously detect depression-related biomolecules: dopamine (DA), 5-hydroxytrypserotonin (5-HT), and melatonin (MEL). Electrochemical studies showed that the GEFAD had high selectivity and sensitivity in the determination of DA, 5-HT, and MEL with their significant separation peaks. The linear ranges of DA, 5-HT, and MEL were respectively found to be 0.1-70 μM, 0.1-100 μM, and 0.1-150 μM, with the corresponding detection limits of 0.054 μM, 0.071 μM, and 0.087 μM (S/N = 3). In addition, the GEFAD presented a good anti-interference ability and satisfactory reproducibility, and can be used in real calf serum sample analysis. The introduced in-flow electrochemical detection device showed excellent repeatability, less sample consumption, and simple operation, which increases the possibility to implement POCT. This study also proposed a promising application prospect for the development of portable biomolecules detection devices." @default.
- W4214642690 created "2022-03-02" @default.
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- W4214642690 date "2022-01-01" @default.
- W4214642690 modified "2023-10-17" @default.
- W4214642690 title "A graphene-based electrochemical flow analysis device for simultaneous determination of dopamine, 5-hydroxytryptamine, and melatonin" @default.
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- W4214642690 doi "https://doi.org/10.1039/d1an02318g" @default.
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