Abstract.
Conductivity measurement is introduced as a rapid, simple and cheap way to identify counterfeit vodka. It was found that the conductivity of vodka derives exclusively from its content of inorganic anions which were previously suggested as markers for vodka authenticity using ion chromatographic determination. The conductivity of vodka is very stable between different batches of bottle filling of the same brand, but there are large differences between different brands. Especially discount brands have significantly higher conductivities than premium products. The applicability of conductivity measurement was demonstrated in authentic forensic cases of brand fraud. A large advantage above other methods of authentication is the possibility to conduct conductivity measurements with mobile meters directly in gastronomy.
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Correspondence: Dirk W. Lachenmeier, Chemisches und Veterinäruntersuchungsamt (CVUA) Karlsruhe, Weißenburger Str. 3, D-76187 Karlsruhe, Germany
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Lachenmeier, D., Schmidt, B. & Bretschneider, T. Rapid and mobile brand authentication of vodka using conductivity measurement. Microchim Acta 160, 283–289 (2008). https://doi.org/10.1007/s00604-007-0825-9
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DOI: https://doi.org/10.1007/s00604-007-0825-9