Research Article
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 |
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