Determination of Alcohol Content in Alcoholic Beverages Using 45 MHz Benchtop NMR Spectrometer

Table 1

Preparation of samples for standard addition method. Internal standards: acetic acid or acetonitrile.

% EtOH	EtOH (mL)	Sample (mL)	Internal standard (mL)	H2O (mL)	Total volume (mL)
0	0	0.5	0.1	1.4	2.0
10	0.2	0.5	0.1	1.2	2.0
20	0.4	0.5	0.1	1.0	2.0
30	0.6	0.5	0.1	0.8	2.0
40	0.8	0.5	0.1	0.6	2.0
50	1	0.5	0.1	0.4	2.0