Levels of selected metals in wines from different Herzegovinian viticultural localities

Abstract

SummaryConcentrations of seven metals indicated as hazardous to human health (Pb, Cu, Zn, Mn, Ni, V, and Cr) were determined in 24 Hezegovinian white and red wines originating from four viticultural localities (Čitluk, Ljubuški, Stolac, and Trebinje). The concentrations of Pb, Cu, Mn, Ni, V, and Cr were determined by the ET AAS, and Zn concentrations were determined by the FAAS technique. Among seven measured metals, Zn and Mn were found in all analysed wines, while Ni was found in only four, and Cr in only five wines. Some wines contained metals at levels above the regulated maximum acceptable limits (Cu in four, Cr in three, Ni in two, and Pb in one wine). White wines from the Stolac locality were characterized by higher concentrations of Cu, Pb, and Zn. However, it was not possible to establish a firm link between the concentrations of the analysed metals and localities where grapes for wine production were grown for other wines.

Metal Concentrations of Red Wines in Southeast Romania

“…Metals enter a wine as a final product in different ways, while their structure and concentration in wine depend on at least four sources. The first, and frequently mentioned source, involves soil on which a vineyard area is established, and capacity of wine to absorb various mineral sustances (Blesić et al, 2017). The second source is linked to the ways and conditions of grape production, among which applications of pesticides and environmental air pollution are frequently stressed (Angelova et al, 1999).…”

“…Metals in wines may have a number of roles, organoleptic characteristics can be influenced positively or negatively, through causes of theier different instabilities, to the fact that wines can be considered sources of metals needed in human diet (Blesić et al, 2017). Besides the metals which are typically abundant in grapes (Ca, Mg and K), metals such as Cu, Fe, Cr, Zn and Mn are necessary or useful in a series of physiological processes in wine yeasts and humas (Marais and Blakhurst, 2009).…”

Direct Determination of Zn, Cd, Pb and Cu in Wine by Differential Pulse Anodic Stripping Voltammetry

“…The authors affirm that several factors may contribute to these different concentrations, such as vine cultivation, the winemaker's knowledge, storage, fertilizers and fungicides. Blesic et al [30] determined Zn in merlot wine from different locations by AAS and the concentrations quantified were 526 and 1856 µg L −1 showing that the location influences the Zn concentration in the samples from the same grape variety and the same vintage (2010).…”

“…Bentlin et al [29] quantified Pb in wine from 0.6 to 26 µg L −1 (samples from Brazil), from 2 to 53 µg L −1 (samples from Argentina), from 2.5 to 28 µg L −1 (samples from Chile) and from 8 to 82 µg L −1 (samples from Uruguay). Blesic et al [30] determined Pb by spectrometry and found 30 and 47 µg L −1 in Merlot (2010) cultivated in different places. Dessuy et al [33] developed a method for Pb determination in wine by spectrometry without any sample preparation and the results obtained for seven samples using the proposed method as well as the analyses after an acid digestion procedure did not show any significant difference (using a Student's t-test).…”

“…The results obtained present lower values than that reported by Lara et al [3] (from 23 to 28 µg L −1 ) in red and white wine (10 samples for each one) in samples from Argentina. Sauvage et al [11] determined Cu (330 µg L −1 ) by AAS in white wine (24 samples) from four different regions (vintage 1997, 1998 and 1999 [30] determined Cu in Merlot wine (2010 vintage) by AAS and 169 µg L −1 was quantified in the sample from Stolac (Bosnia) and 856 µg L −1 in the sample from Trebinje (Bosnia). According to Green et al [18] the presence of Cu in the wine can be attributed to application of fungicides in the vineyards, by spraying products containing Cu that are used for pests and disease control as well as by the contact of the must with utensils and equipment that incorporate this metal within their components.…”