Adjunct Professor of the Nutritional Quality Department, Instituto Federal de Educação, Ciência e Tecnologia do Maranhão, Brazil.
National School of Public Health/Fiocruz, Brazil.
Food Chem. 2021 Jun 1;346:128961. doi: 10.1016/j.foodchem.2020.128961. Epub 2021 Jan 4.
To assess the levels of heavy metals and their antagonists in dairy products available in the markets of São Luís, northeastern Brazil.
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).
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).
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.
评估巴西东北部圣路易斯市场上乳制品中重金属及其拮抗剂的含量水平。
采用电感耦合等离子体光学发射光谱法（ICP-OES）对乳制品中的重金属铜（Cu）、铅（Pb）、汞（Hg）和镍（Ni）及其拮抗剂铁（Fe）、锌（Zn）、钙（Ca）、硒（Se）和钴（Co）进行化学分析。
乳制品中主要重金属为 Hg、Pb、Se 和 Ni。全脂牛奶中 Cu 与 Fe（rho=-0.634，p=0.001）、Cu 与 Zn（rho=-0.794，p=0.000）之间呈显著负相关，Pb 与 Ca（rho=0.387，p=0.056）之间呈正相关，Hg 与 Se（rho=0.055，p=0.795）之间呈弱正相关。
圣路易斯市场上的乳制品品牌可能是重金属污染（Hg、Pb、Se、Cu、Ni）的来源，其与拮抗剂之间的相关性较弱。
