Table 2.

Some employed methods for electrochemical determination of nitrogen reactive species.

The active surface	The target	Limit of detection	Linear range of response	Ref.
Platinum-black coated platinum electrode	Nitrite	10 nM	15-200 nM	[233]
Platinum-black coated electrode	Nitric oxide	30 nM	~1-10 μM	[234]
Reduced graphene oxide coated screen printed carbon electrode	Nitrite	830 nM	20–100 μM	[235]
Fe2O3 nanoparticles decorated reduced graphene oxide nanosheets	Nitrite	1.5 × 10−8 M	5.0 × 10−8-7.8 × 10−4 M	[236]
Carbon paste electrode/Ru(III)	Nitrite	1.39 × 10−6 M	0–1.38 × 10−2 M	[237]
Urchin-like palladium nanostructures on carbon nanotube thin film electrode	Nitrite	0.25 μM	2-238 μM	[238]
Porphyrin-based metal–organic framework thin films	Nitrite	2.1 μM	20–800 μM	[239]
gold nanoparticles decorated flower-like graphene	Nitrite	0.01 μM	20.375 nM-0.125 μM	[240]
Cu metal nanoparticles-multiwall carbon nanotubes-reduced graphene oxide	Nitrite Nitrate	30 nM 40 nM	0.1-75 μM	[241]