GC:BiFE As an Useful Tool for the Quantification of Health Harmful Organic Compounds in Artisanal Spiritus Beverages Via ADSV

Abstract

The bismuth film electrode (BiFE) has been used for the last two decades to substitute mercury electrodes for organics and inorganic compounds electroanalysis in the ppm and ppb range. Various of these compounds are considered such as important pollutants and potentially toxic for the human health. The electrode specificity is based in the ability to form amalgams or strong interactions with the analyte under test. The present work show the application of BiFE for detection and quantification of acetaldehyde (by-product of alcoholic fermentation) in EtOH:H 2 O (1:1).The analysis is carried out using Cathodic Adsorptive Stripping Square Wave Voltammetry (CAdSSWV) to take advantage of the ability to form strong interactions and the sensitivity of this technique. Fig 1. CAdSSWV of formaldehyde 50 ppm in EtOH:H 2 O (1:1) in LiClO 4 0.1 M with acetate buffer (pH=4.5) as supporting electrolyte in BiFE supporting in Glassy Carbon. E dep = 0.2 V t dep =60 s. Reference electrode = Ag/AgCl Auxiliar electrode = Tungsten wire References Hutton, E., Ogorevc, B., Hocevar, S., Weldon, F., Smyth, M., Wang, J., An introduction to bismuth film electrode for use in cathodic electrochemical detection, Electrochem. comm. , 2001, 3, 707 – 711 DOI: 10.1016/S1388-2481(01)00240-5 Constant, M. G. Van den Berg, Jacinto Gil S., The determination of platinum in sea water by adsorptive cathodic stripping voltammetry, Analytica Chim. Acta , 1988, 129 – 139 DOI: 10.1016/S0003-2670(00)83675-2 Figure 1