Table 2.

Materials and performance characteristics of selected NO sensors that operate via the direct electrooxidation of NO.

Electrode materiala	NO-selective membraneb	E-chem modec	Diameter (μM)	Linear range (μM)	LODd (nM)	Calibration methode	Interfering species testedf	Reference
Au	Nation	DPV	25	10 – 100		dNO	nitrite	20
Pt	polycarbazole	DPV		0.01 – ~1000		dNO	AA,DA	38
Pt	polystyrene	CPA	10	0.1 – 1.0	75	dNO	nitrite	39
Pt/Pt black	fluorinated xerogel	CPA	20	0.0002 – 0.003, 0.5 – 4.0	0.083	dNO	nitrite, AA, UA, DA, ammonia, CO	40
Pt/Pt black	PTFE	CPA	250	Sub-nM - 1	1 nM	dNO	CO	24
CF	Nation, o-PD	CPA, CA	39	0.1 – 1.2	35	dNO	nitrite, AA, DA	41

^aCF, carbon fiber

^bPTFE, polytetrafluoroehtylene; o-PD, o-phenylenediamine

^cDPV, differential pulse voltammetry; CPA, constant potential amperometry; CA, chronoamperometry

^dLOD, limit of detection

^edNO, dissolved NO

^fAA, ascorbic acid; DA, dopamine; UA, uric acid; CO, carbon monoxide