Risco a saúde humana ao consumo de pescado marinho contaminado com mercúrio no Atlântico Sul

Abstract

Mercury (Hg) is a natural element that can be transported over long distances and deposited or sedimented in various environments, either directly or indirectly. Exposure of animals and humans to Hg and MeHg can harm different levels of biological organization, increasing the concentrations of these elements throughout the food chain. Fish consumption has grown exponentially worldwide, as fish is considered a healthy food and is considered one of the best sources of protein for the human diet. Therefore, contamination of aquatic organisms by mercury is a concern both ecologically and in the context of public health. The objective of this study was to evaluate mercury contamination in marine fish species consumed in the South Atlantic and to associate the risk to human health from the consumption of this fish. And to determine a non-invasive method for monitoring mercury concentrations. Specimens of Thunnus atlanticus were acquired from fishermen upon landing in Piúma, Salvador and Natal. After collection, the individuals will be transported to the laboratory. Muscle tissue and fin samples were collected for quantification of total mercury using a DMA80 analyzer. Mercury concentrations were within the limits established by ANVISA, and values considered safe for consumption by Brazilian legislation, but exceeded those levels when compared to international legislation. Pearson's analysis showed a strong correlation between mercury concentrations in the fin and mercury in the muscle.