Rapid Quantification of Ethyl Carbamate in Spirits Using NMR Spectroscopy and Chemometrics

Table 1

Results of PLS correlation models between data of reference analysis and NMR spectra for calibration set 2 (𝑛=119).

Type of spectra	NMR region	RMSE, mg/L	𝑅^2
2D J-resolved	10–6.0	0.13	0.98
2D J-resolved	4.20–4.00	1.14	0.65
1D NOESY	10–6.0	0.70	0.81
1D NOESY	4.20–4.00	0.79	0.82