New approach for wine authenticity screening by a cumulative 1H and 2H qNMR

Open Access

Table 3.

Registration parameters of NMR ¹H and ²H spectra.

Parameter	¹H	²H
The angle of the	90^∘	90^∘
excitation pulse
Acquisition time	3.5 sec	1.9 sec
Relaxation delay	17 sec	0.5 sec*
Spectrum width	15 ppm	25 ppm
Points number	32 K	4 K
Scans number	8	256
Exponential multiplication	0.2 Hz	2.0 Hz

Notice: ^∗ Value for wine water (relaxation delay is 7 sec in case of measurement of the ²H content in CH₃- and CH₂- groups of ethanol molecules).

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