Evaluation of a Benchtop Cryogen-Free Low-Field <sup>1</sup>H NMR Spectrometer for the Analysis of Sexual Enhancement and Weight Loss Dietary Supplements Adulterated with Pharmaceutical Substances - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Analytical Chemistry Année : 2014

Evaluation of a Benchtop Cryogen-Free Low-Field 1H NMR Spectrometer for the Analysis of Sexual Enhancement and Weight Loss Dietary Supplements Adulterated with Pharmaceutical Substances

Résumé

Nuclear magnetic resonance (NMR) spectroscopy is a unique tool for detection, structural characterization, and quantification of compounds in complex mixtures. However, due to cost constraints, NMR is rarely used in routine quality control (QC) analysis. The recent release of benchtop cryogen-free low-field NMR spectrometers represents a technological break in the NMR field. In this paper, we evaluated the potential of a benchtop cryogen-free 60 MHz spectrometer for uncovering adulteration of ?100% natural? sexual enhancement and weight loss dietary supplements. We demonstrated that the adulterant(s) can readily be detected in ≈20 min of recording after a very simple and rapid sample preparation. We also showed that the quantification by the internal standard method can be done on the low-field NMR spectrometer and leads to results similar to those obtained with high-field NMR. Considering the cost and space efficiency of these spectrometers, we anticipate their introduction in QC laboratories as well as in governmental agencies, especially in the field of fraud detection.

Domaines

Chimie

Dates et versions

hal-02063995 , version 1 (11-03-2019)

Identifiants

Citer

Guilhem Pages, Anna Gerdova, David Williamson, Véronique Gilard, Robert Martino, et al.. Evaluation of a Benchtop Cryogen-Free Low-Field 1H NMR Spectrometer for the Analysis of Sexual Enhancement and Weight Loss Dietary Supplements Adulterated with Pharmaceutical Substances. Analytical Chemistry, 2014, 86 (23), pp.11897-11904. ⟨10.1021/ac503699u⟩. ⟨hal-02063995⟩
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