A New Electrochemical Sensor for Direct Detection of Purine Antimetabolites and DNA Degradation

Table 2

Comparison of the Gr- (or GrO-) based sensors proposed for the determination of thiopurines by using adsorptive stripping voltammetry.

Compound	Sensor	Sensitivity (μA/μmol·L^−1)	Linear range (μmol·L^−1)	LOD (μmol·L^−1)	tacc (s)	Reference
AZTP	Gr-Chit/GCE	0.46	0.1–2.0	0.05	120	[39]
	Ag-Gr/GE	4.74	0.7–100	0.07	50	[40]
	GrO-IL-AuNPs-Chit/CSE	2.66	0.0–10	0.04	120	This work
TG	RGrO/CPE	0.23	0.4–50	0.07	40	[41]
	Poly(neutral red)-ERGrO/PGE	0.08	0.7–475	0.12	150	[42]
	GrO-IL-AuNPs-Chit/CSE	4.22	0.0–10	0.02	120	This work
MP	[Co(phen)3]^3+/GrO-DNA/GCE	0.29	0.05–2.0	0.02		[43]
	GrO-IL-AuNPs-Chit/CSE	2.79	0.0–20	0.03	120	This work

GE: graphite electrode; GCE: glassy carbon electrode; CPE: carbon paste electrode; PGE: pencil graphite electrode.