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Publicação
Análise de contaminantes inorgânicos em alimentos provenientes de áreas ardidas na região Centro de Portugal
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Orientador(es)
Resumo(s)
Portugal é um dos países europeus onde ocorre maior número de incêndios
florestais e com a mais vasta área ardida. Os incêndios ocorridos em
2017, nos concelhos de Pedrógão Grande, Castanheira de Pera e Figueiró
dos Vinhos, evidenciaram o enorme impacto destas catástrofes ambientais
na saúde das populações, no seu bem-estar e no seu modo de vida.
Este trabalho teve como objetivo a análise de seis elementos inorgânicos,
nomeadamente bromo (Br), arsénio (As), níquel (Ni), cádmio (Cd), chumbo
(Pb) e cromo (Cr), em amostras de couves, batatas e ovos provenientes
de hortas familiares dos três concelhos afetados, em dois períodos de
tempo diferentes, após a ocorrência dos incêndios. Os resultados deste
estudo foram comparados com valores obtidos para os mesmos alimentos
colhidos nas mesmas áreas, antes dos incêndios (amostra controlo
de couves) e com valores referidos na literatura (batatas e ovos). Quando
possível, e aplicável, os resultados foram também comparados com valores
limite reportados na legislação em vigor. A determinação foi realizada
por Espetrometria de Massa acoplada a Plasma Indutivo (ICP-MS). Os
ensaios foram realizados mediante procedimentos analíticos em conformidade
com a norma ISO 17025:2005. Os resultados mostraram que as
amostras de couves, colhidas após os incêndios, e a amostra controlo
apresentam diferenças significativas no As, Ni, Cd, Cr e Br. Relativamente
ao Pb, não foram encontradas diferenças significativas entre as amostras
das duas colheitas e a amostra de controlo. Por outro lado, os elementos
analisados apresentam valores abaixo dos referidos na literatura e/ou na
legislação em vigor, para as três matrizes estudadas. No entanto, foram
encontradas exceções para o As e Cr, nos ovos, e para o As, nas batatas
da 2ª colheita, em que os valores encontrados estão acima dos referidos
na literatura.
Portugal is one of the European countries with the highest number of forest fires and the largest burned area. In 2017, the fires in the municipalities of Pedrógão Grande, Castanheira de Pera and Figueiró dos Vinhos, showed the enormous impact of these environmental catastrophes on the health of the population, on their well-being and on their way of life. This work aimed to analyze six inorganic elements, namely bromine (Br), arsenic (As), nickel (Ni), cadmium (Cd), lead (Pb) and chromium (Cr), in samples of cabbages, potatoes and eggs from home gardens in the three affected counties, in two different periods, after the fires occurred. The values obtained from this study were compared with values obtained for the same foods harvested in the same areas, before fires (cabbages) or with values reported in the literature (potatoes and eggs). When possible, and applicable, the results were also compared with limit values reported in the legislation. The determination was performed by Mass Spectrometry coupled to Inductive Plasma (ICP-MS). The tests were performed using analytical procedures in accordance with the ISO 17025: 2005 standard. The results showed that the cabbage samples, collected after the fires, and the control sample present significant differences in As, Ni, Cd, Cr and Br. Regarding Pb, there were no significant differences between the samples from the two harvests and the control sample. On the other hand, results showed that the analyzed elements present values below those mentioned in the literature and/or in the legislation in force, for the three matrices studied. However, exceptions were found for As and Cr in eggs and As in potatoes from the 2nd harvest, in which the values found are above those reported in the literature.
Portugal is one of the European countries with the highest number of forest fires and the largest burned area. In 2017, the fires in the municipalities of Pedrógão Grande, Castanheira de Pera and Figueiró dos Vinhos, showed the enormous impact of these environmental catastrophes on the health of the population, on their well-being and on their way of life. This work aimed to analyze six inorganic elements, namely bromine (Br), arsenic (As), nickel (Ni), cadmium (Cd), lead (Pb) and chromium (Cr), in samples of cabbages, potatoes and eggs from home gardens in the three affected counties, in two different periods, after the fires occurred. The values obtained from this study were compared with values obtained for the same foods harvested in the same areas, before fires (cabbages) or with values reported in the literature (potatoes and eggs). When possible, and applicable, the results were also compared with limit values reported in the legislation. The determination was performed by Mass Spectrometry coupled to Inductive Plasma (ICP-MS). The tests were performed using analytical procedures in accordance with the ISO 17025: 2005 standard. The results showed that the cabbage samples, collected after the fires, and the control sample present significant differences in As, Ni, Cd, Cr and Br. Regarding Pb, there were no significant differences between the samples from the two harvests and the control sample. On the other hand, results showed that the analyzed elements present values below those mentioned in the literature and/or in the legislation in force, for the three matrices studied. However, exceptions were found for As and Cr in eggs and As in potatoes from the 2nd harvest, in which the values found are above those reported in the literature.
Descrição
Palavras-chave
Incêndios Florestais Fogos Florestais Contaminantes em Alimentação Composição dos Alimentos Toxicologia Contaminantes Químicos Saúde Ambiental Avaliação do Impacte em Saúde Saúde Pública Portugal
Contexto Educativo
Citação
Boletim Epidemiológico Observações. 2020 setembro-dezembro;9(28):24-29
Editora
Instituto Nacional de Saúde Doutor Ricardo Jorge, IP