Total mercury in commercial fishes and estimation of Brazilian dietary exposure to methylmercury

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dc.creatorFlávia Beatriz Custódio
dc.creatorArthur Magno Guedes Franco de Andrade
dc.creatorLeticia Rocha Guidi
dc.creatorCarlos Augusto Gomes Leal
dc.creatorMaria Beatriz de Abreu Glória
dc.date.accessioned2022-05-17T12:13:57Z
dc.date.accessioned2025-09-08T22:55:23Z
dc.date.available2022-05-17T12:13:57Z
dc.date.issued2020-12
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.identifier.doi10.1016/j.jtemb.2020.126641
dc.identifier.issn0946-672X
dc.identifier.urihttps://hdl.handle.net/1843/41738
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Trace Elements in Medicine and Biology
dc.rightsAcesso Restrito
dc.subjectMetais pesados
dc.subjectPeixes
dc.subjectSegurança alimentar
dc.subject.otherHeavy metal
dc.subject.otherFood safety
dc.subject.otherRisk assessment
dc.subject.otherFarmed fish
dc.subject.otherFeeding
dc.subject.otherBehavior
dc.titleTotal mercury in commercial fishes and estimation of Brazilian dietary exposure to methylmercury
dc.typeArtigo de periódico
local.citation.epage7
local.citation.spage1
local.citation.volume62
local.description.resumoBackground Mercury, in particular its most toxic form methylmercury, poses a risk to public health. Dietary methylmercury exposure is mainly by fish, and it can vary with fish contamination and by dietary habits of the population. This study aimed to quantify total mercury levels in different fish from Brazil and to estimate Brazilian exposure to methylmercury by fish consumption. Methods Total mercury occurrence was investigated in 18 different fish species by atomic absorption spectrometry with thermal decomposition and gold amalgamation. Dietary exposure to methylmercury was estimated by a deterministic method for different groups considering consumption by sex, different Brazilian geographical regions and habitat (rural or urban). Results Carnivorous fish showed higher levels of mercury (0.01 to 0.93 mg/kg) compared to non-strictly carnivorous fish (<0.01 to 0.30 mg/kg). Farmed fishes showed significantly lower levels compared to wild fish. Mean Brazilian fish consumption achieves FAO/WHO health recommendation of about two portions of fish per week. However, there is a large difference between fish consumption at urban and rural homes and among Brazilian geographic regions. These differences in consumption impacted estimated methylmercury intake that was higher in the Northern (1.85 μg/kg bw week) and in the Northeastern (0.72 μg/kg bw week) regions and also by rural population (1.08 μg/kg bw week). These values were compared with the toxicological reference dose for neurotoxicity of 1.6 μg/kg bw week. Conclusion Even though total levels of mercury in fish were lower than Brazilian and international legislations, in the Northern Brazilian region methylmercury intake overpassed the toxicological reference dose for neurotoxicity and in rural areas it achieved 68% of this reference dose.
local.publisher.countryBrasil
local.publisher.departmentFAR - DEPARTAMENTO DE ALIMENTOS
local.publisher.departmentFAR - DEPARTAMENTO DE PRODUTOS FARMACÊUTICOS
local.publisher.departmentVET - DEPARTAMENTO DE MEDICINA VETERINÁRIA PREVENTIVA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S0946672X20302066?via%3Dihub

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