International Journal of Analytical Chemistry

Research Article

Simultaneous Detection of Ascorbic Acid, Dopamine, and Uric Acid Using a Novel Electrochemical Sensor Based on Palladium Nanoparticles/Reduced Graphene Oxide Nanocomposite

Table 2

Comparison of different electrodes in the simultaneous detection of AA, DA, and UA.


Electrode	pH	Linear range (μM); Sensitivity (μA · μM⁻¹ · cm⁻²)			Ref.
Electrode	pH	AA	DA	UA	Ref.

MgO nanobelts/GCE	5.0	2.5–15, 25–150; 0.198, 0.028	0.125–7.5 7.908	0.5–3, 5–30; 2.83, 0.962	[30]
SnO₂/chitosan/GCE	7.0	20–220; 0.127	0.1–18; 2.773	1–100; 2.391	[45]
3DGH^a-AuNPs^b/GCE	7.0	1.0–700; 0.217	0.2–30; 3.897	1–60; 1.703	[46]
AuNPs^b@MoS₂ nanosheets/GCE	4.0	12–800; 0.481	10–300; 0.979	8–900; 0.465	[47]
Pd₃Pt₁^c/PDDA^d-rGO/GCE	7.4	40–1200; 0.359	4–200; 0.639	4–400; 0.498	[48]
CB^e/GCE	7.0	1.91–37.8; 0.214	0.599–11.8; 1.570	1.01–14; 0.680	[49]
Pt@NP-AuSn^f/CFP^g	7.0	200–1200; 0.0004	0.5–10; 0.0017	25–500; 0.0003	[50]
PdNPs/rGO/GCE	7.2	500–3500; 0.079	3–15, 15–42; 10.893, 6.083	300–1400; 0.481	This work

a: three dimensional graphene hydrogel; b: gold nanoparticles; c: Pd-Pt bimetallic nanoparticles; d: poly(diallyldimethylammonium chloride); e: nanostructured carbon black; f: Pt nanoparticle-modified nanoporous AuSn; g: Ni-buffered flexible carbon fiber paper.