Simultaneous Electrochemical Detection of Pb and Cd by Carbon Paste Electrodes Modified by Activated Clay

Table 1

Comparison of the performance of some electrodes with other analytical methods for lead and cadmium.

Electrode material	Technique used	Solvent	Limit of detection		Reference
			Pb^2+	Cd^2+
Ce-Zr/GCE	SWASV	Distilled water	5980 μM	—	[5]
RGO-GNPs	SWASV	Distilled water	0.00058 μM	0.00071 μM	[6]
GCE-MWCNT/poly-PCV/Bi	DPASV	Distilled water	0.00193 μM	0.00178 μM	[8]
Fe3O4/MWCNTs/LSG/CS/GCE	SWASV	Distilled water	0.00034 μM	0.00089 μM	[21]
BiPs-CNFs/[EMIM][NTf2]/CPE	SWASV	Distilled water	0.00058 μM	0.00222 μM	[25]
ZnFe2O4-GCE	DPASV	Distilled water	0.00541 μM	0.02224 μM	[26]
GCE/ZSM-5/Pt	DPV	Distilled water	0.01196 μM	—	[27]
CPE-ACC	SWV	Distilled water	0.15513 μM	0.24227 μM	This work
CPE-ACC	SWV	Tap water	0.08438 μM	0.46522 μM	This work