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Presença de metais pesados em produtos da pesca: planos de amostragem de um centro logístico de distribuição
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Advisor(s)
Abstract(s)
O presente trabalho, desenvolvido numa base logística de distribuição, estuda a
presença dos metais pesados mercúrio (Hg), chumbo (Pb) e cádmio (Cd) em produtos
de pesca. O plano analítico, da responsabilidade de um laboratório externo, e os
resultados obtidos, foram utilizados para quantificar a concentração de Hg, Pb e Cd nos
produtos de pesca fornecidos à base logística. O estudo incidiu sobre onze espécies de
peixe, nove espécies de moluscos, quatro de cefalópodes e cinco de bivalves, e uma
espécie de crustáceos, nos anos de 2017, 2018 e 2019.
Após análise dos boletins de análise e tratamento de dados verificou-se que
apenas três espécies, duas de moluscos e uma de peixes, apresentam resultados
superiores aos limites legais (Reg. UE 915/2023), embora se detete a presença residual
de metais pesados noutras espécies.
A análise dos dados permite concluir que a concentração de Hg, Pb e Cd
respeita, na maioria das amostras, a legislação europeia.
A frequência de análises deve manter-se ou intensificar-se nas espécies com
maior percentagem de incumprimento, a lula com 67% e a pota com 38%.
O esforço de amostragem nos outros produtos de pesca parece estar de acordo
com os resultados encontrados, podendo ser intensificado se a percentagem de não
conformidades de Hg, Pb ou Cd aumentar.
This work, carried out at a logistics distribution base, studies the presence of the heavy metals mercury (Hg), lead (Pb) and cadmium (Cd) in fishery products. The analytical plan, carried out by an external laboratory, and the results obtained were used to quantify the concentration of Hg, Pb and Cd in the fish products supplied to the logistics base. The study covered eleven species of fish, nine species of molluscs, four cephalopods and five bivalves, and one species of crustacean, in 2017, 2018 and 2019. After analysing the data analysis and processing reports, it was found that only three species, two of molluscs and one of fish, showed results above the legal limits (Reg. UE 915/2023), although the residual presence of heavy metals was detected in other species. Analysing the data, it can be concluded that the concentration of Hg, Pb and Cd complies with European legislation in most of the samples. The frequency of analyses should be maintained or intensified in the species with the highest percentage of non-compliance, squid with 67% and bream with 38%. The sampling effort for other fishery products seems to be in line with the results found, and could be intensified if the percentage of non-compliances for Hg, Pb or Cd increases. Keywords: Heavy metals, mercury, lead, cadmium, fishery products
This work, carried out at a logistics distribution base, studies the presence of the heavy metals mercury (Hg), lead (Pb) and cadmium (Cd) in fishery products. The analytical plan, carried out by an external laboratory, and the results obtained were used to quantify the concentration of Hg, Pb and Cd in the fish products supplied to the logistics base. The study covered eleven species of fish, nine species of molluscs, four cephalopods and five bivalves, and one species of crustacean, in 2017, 2018 and 2019. After analysing the data analysis and processing reports, it was found that only three species, two of molluscs and one of fish, showed results above the legal limits (Reg. UE 915/2023), although the residual presence of heavy metals was detected in other species. Analysing the data, it can be concluded that the concentration of Hg, Pb and Cd complies with European legislation in most of the samples. The frequency of analyses should be maintained or intensified in the species with the highest percentage of non-compliance, squid with 67% and bream with 38%. The sampling effort for other fishery products seems to be in line with the results found, and could be intensified if the percentage of non-compliances for Hg, Pb or Cd increases. Keywords: Heavy metals, mercury, lead, cadmium, fishery products
Description
Dissertação, Mestrado, Tecnologia Alimentar, Instituto Politécnico de Santarém, Escola Superior Agrária, 2023
Keywords
produto da pesca metal pesado mercúrio chumbo cádmio fishery products heavy metals mercury lead cadmium
Citation
Gouveia, H. (2023). Presença de metais pesados em produtos da pesca: planos de amostragem de um centro logístico de distribuição. Dissertação de mestrado. 31p. Dissertação apresentada para obtenção do grau de Mestre na área de Tecnologia Alimentar, na Escola Superior Agrária de Santarém. Disponível em: http://hdl.handle.net/10400.15/4661