AI Article Synopsis
- The study aimed to analyze heavy metal levels in dairy products sold in São Luís, Brazil, focusing on metals like copper, lead, mercury, and nickel, as well as their antagonists including iron and zinc.
- Using a method called ICP-OES, the research found significant presence of mercury and lead in the samples, with notable negative correlations between copper and its antagonists iron and zinc in whole milk.
- Overall, the findings suggest that dairy products in this market may pose a risk of heavy metal contamination, although the relationships with their antagonistic minerals are generally weak.
Article Abstract
Objective: To assess the levels of heavy metals and their antagonists in dairy products available in the markets of São Luís, northeastern Brazil.
Methods: Chemical analysis of the heavy metals copper(Cu), lead(Pb), mercury(Hg), and nickel(Ni) and their antagonists iron(Fe), zinc(Zn), calcium(Ca), selenium(Se), and cobalt(Co) contained in dairy products using inductively coupled plasma optical emission spectrometry (ICP-OES).
Results: The main heavy metal observed in dairy products were Hg; Pb; Se and Ni. A significant negative correlation was observed between the concentrations of Cu and Fe (rho = -0.634, p = 0.001), Cu and Zn (rho = -0.794, p = 0.000) in whole milk. A non-significant positive correlation was observed between Pb and Ca (rho = 0.387, p = 0.056), and Hg and Se (rho = 0.055, p = 0.795).
Conclusions: Dairy product brands available in the markets of São Luís could be considered a source of heavy metal contamination (Hg, Pb, Se, Cu, Ni) with weak correlations with their antagonists.
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| http://dx.doi.org/10.1016/j.foodchem.2020.128961 | DOI Listing |
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