The Use of Silver Solid Amalgam Electrodes for Voltammetric and Amperometric Determination of Nitrated Polyaromatic Compounds Used as Markers of Incomplete Combustion

Table 3

Regeneration potentials, optimum supporting electrolyte and potential of the main reductive peak of nitro group for the DC voltammetric and DP voltammetric determination of 1-NP, 2-NF, 3-NFt, and 5-NQ at m-AgSAE.

Analyte	Regeneration potentials (mV)		Optimum supporting electrolyte	Peak potential (mV)^a
	𝐸in	𝐸fin
1-NP	−50	−1800	Methanol—0.01 mol L^−1 NaOH pH 12.0 (7 : 3)	−650
2-NF	−200	−1500	Methanol—BR buffer pH 10.0 (1 : 1)	−680
3-NFt	−350	−1600	Methanol—0.01 mol L^−1 NaOH pH 12.0 (9 : 1)	−660
5-NQ^b	0	−1350	0.05 mol L^−1 borate buffer pH 9.0	−605

^aFor DCV and concentration 1⋅10⁻⁴ mol L⁻¹; ^bfrom [10].