Table 1. Comparison of several sensors performance.

Sensor	RT (s)	Potential (v)	Detection Limit (μM)	Linear Range (mM)	Sensitivity (μAmM−1cm−2)	Reference
CuNCs-DLEG	<3	0.55 (vs. Ag/AgCl)	0.25	0.025–4.5	4532	This work
GC/CoNSs/CHIT-RGO	–	0.45 (vs. SCE)	10	0.015–6.95	1921	53
GC/Cu Nanocubes/Graphene	–	0.55 (vs. Ag/AgCl)	1	Up to 7.5	1096	54
GC/CuNPs/Graphene	<2	0.50 (vs. Ag/AgCl)	0.50	Up to 4.5	–	55
SPE /Pt-Cuo/rGO	–	0.60 (vs. Ag/AgCl)	0.01	0.0005–12	3577	56
Si-SiO2/Ti/Pt/GNP/PEDOT-GOx	–	–	0.03	0.01–50	≈14	57,58