Determination of Cu in Tequila by Anodic Stripping Voltammetry

Carreón-Álvarez, Alejandra; Casillas, Norberto; Ibáñez, Jorge G.; Hernández, F.; Prado-Ramirez, Rogelio; Bárcena-Soto, Maximiliano; ́mez-Salazar, Sergio Go

doi:10.1080/00032710701577989

Cited by 19 publications

(12 citation statements)

References 12 publications

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“…An example is the analysis of Cu in tequila using a Pt rotating disk electrode with the SAM. The obtained results compare well to those with AAS (Carreon-Alvarez et al, 2008).…”

Section: Rotating Disk Electrodesupporting

confidence: 86%

Metals in alcoholic beverages: A review of sources, effects, concentrations, removal, speciation, and analysis

Ibáñez

Carreón-Álvarez

Bárcena-Soto

et al. 2008

Journal of Food Composition and Analysis

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148

122

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“…An example is the analysis of Cu in tequila using a Pt rotating disk electrode with the SAM. The obtained results compare well to those with AAS (Carreon-Alvarez et al, 2008).…”

Section: Rotating Disk Electrodesupporting

confidence: 86%

Metals in alcoholic beverages: A review of sources, effects, concentrations, removal, speciation, and analysis

Ibáñez

Carreón-Álvarez

Bárcena-Soto

et al. 2008

Journal of Food Composition and Analysis

Self Cite

148

122

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“…For our samples, no other metal oxidative stripping signals were observed using cyclic voltammetry. Carreon-Alvarez et al reported the possible presence of Zn and Cd in mezcal samples [19], which were not observed in our samples probably due to the low sensitivity of the cyclic voltammetry technique.…”

Section: Resultscontrasting

confidence: 66%

“…Cu, Pb, Cd and Zn have been analyzed in tequila, raicilla, sotól, and mezcal (spirit beverages derived from agave sp.) using differential pulse polarography [18], anodic stripping voltammetry [19], and differential pulse adsorptive voltammetry [20] without any pretreatment. Disadvantages in the previous reports include the use of toxic electrodes such as mercury, or expensive electrodes such as platinum and the requirement of relatively long pre-concentration times.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Cu in Mezcal Commercial Samples using Square Wave Anodic Stripping Voltammetry

Salinas

Ibáñez

Vásquez-Medrano

et al. 2018

J. Electrochem. Sci. Technol

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High concentration of copper in mezcal, a representative Mexican spirituous alcoholic beverage, is a serious problem due to the damage that it may cause to human health. A cyclic voltammetry and square wave anodic stripping voltammetry study of copper (II) in three commercial mezcal samples based on glassy carbon electrode response was undertaken. The analysis was developed using a simulated matrix solution (EtOH/H 2 O (1:1), 0.1 M LiClO 4 and AcOH/AcONa 0.05 M/ 0.008 M), with Cu (II) concentrations in the range 0-1 ppm. Direct electrochemical analysis of mezcal samples was complicated by the presence of different organic compounds in the matrix. The analytical signal of Cu (II) in the spirituous was notably improved and the interferences caused by organic compounds were minimized, by diluting the mezcal samples 10% with EtOH/H 2 O (1:1) solution. An efficient quantification of Cu (II) was obtained from the calibration curve by the SWASV and using the internal standard method (Cd (II)) in commercial samples (1.2-6.7 ppm); the results were correlated satisfactorily with the values obtained by AAS.

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“…Only few information is known about their chemical and physicochemical properties. This information is needed to tag their identity and draft regulations [17][18][19][20]. Unlike previously mentioned beverages, tequila is a Mexican spirituous beverage, well known around the world and recognized with an appellation name [21].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Physicochemical Properties of Tequila Brands: Authentication and Quality

Carreón-Álvarez

Suárez-Gómez

Zurita

et al. 2016

Journal of Chemistry

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Several physicochemical properties were measured in commercial tequila brands: conductivity, density, pH, sound velocity, viscosity, and refractive index. Physicochemical data were analyzed by Principal Component Analysis (PCA), cluster analysis, and the one-way analysis of variance to identify the quality and authenticity of tequila brands. According to the Principal Component Analysis, the existence of 3 main components was identified, explaining the 87.76% of the total variability of physicochemical measurements. In general, all tequila brands appeared together in the plane of the first two principal components. In the cluster analysis, four groups showing similar characteristics were identified. In particular, one of the clusters contains some tequila brands that are not identified by the Regulatory Council of Tequila and do not meet the quality requirements established in the Mexican Official Standard 006. These tequila brands are characterized by having higher conductivity and density and lower viscosity and refractive index, determined by one-way analysis of variance. Therefore, these economical measurements, PCA, and cluster analysis can be used to determinate the authenticity of a tequila brand.

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Determination of Cu in Tequila by Anodic Stripping Voltammetry

Cited by 19 publications

References 12 publications

Metals in alcoholic beverages: A review of sources, effects, concentrations, removal, speciation, and analysis

Metals in alcoholic beverages: A review of sources, effects, concentrations, removal, speciation, and analysis

Analysis of Cu in Mezcal Commercial Samples using Square Wave Anodic Stripping Voltammetry

Assessment of Physicochemical Properties of Tequila Brands: Authentication and Quality

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