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

Table 2

The parameters of the linear regression 𝐸_𝑝[𝑚𝑉]=𝑎pH+𝑏 for the dependence of peak potential 𝐸_𝑝 of the first main nitro group reduction on the pH of the aqueous phase of the supporting electrolyte. Supporting electrolyte: BR buffer-methanol in ratios 1 : 1, 3 : 7, and 1 : 9 for 2-NF, 1-NP, and 3-NFt, respectively.

Analyte	pH of the aqueous phase	Slope (𝑎) (mV^−1)	Intercept (𝑏) (mV)	Correlation coefficient
1-NP	2.0–7.0	−62.3	−80.1	−0.9950
	8.0–12.0	−40.9	−268.3	−0.9915
2-NF	1.0–7.0	−66.9	−102.0	−0.9981
	8.0–12.0	−32	−272.6	−0.9991
3-NFt	2.0–8.0	−50.1	−227.5	−0.9961
	9.0–11.0	−32	−326.0	−0.9881