Table 1. Comparison of linear range and detection limits for ERL with previous methods and electrodes .

Method	Electrode	Linear working range (mol L -1 )	Detection Limit (mol L -1 )	Reference
Amperometry	MWCNT/SPCE	1.0×10-6-1.0×10-3	5.3×10-7	31
SWV	BDD	2.0×10-7-2.0×10-5	1.7×10-7	32
CV	Ni-GCE	5.0×10-6-1.0×10-4	1.0×10-6	33
SWV	Pt/MWNTs/GCE	1.0×10-6 - 7.5×10-5	6.2×10-7	34
CV	OXL -9MGPE	4×10-5- 1.2×10-4	1.4×10-6	This work

MWCNT: multi-walled carbon nanotubes; SPCE: screen-printed carbon electrode; SWV: square- wave voltammetry; BDD: Boron-doped diamond electrode; GCE: glassy carbon electrode; CV: cyclic voltammetry; Ni: nickel; Pt/MWNTs/GCE: Pt-nanoclusters/ multi-walled carbon nanotubes.