Determination of Ethanol Content in Alcoholic Products by LF-NMR

Abstract

Nuclear magnetic resonance (NMR) is a technique used for many years by chemists for elucidation of molecular structure. Technological progress over the years has enabled this technique, making it easier to use. Thus, the LF-NMR (low-field NMR) was introduced as a side technique, characterized by low management costs and shorter analysis time than its main counterpart. The application of 1H LF-NMR for the quantification of ethyl alcohol in different alcoholic matrices is herein described, comparing the results obtained with this technique with those determined by a reference gas chromatographic method.