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Mercúrio no cabelo humano no norte da Índia
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ISBN10: 6209511619
ISBN13: 9786209511615
Publisher: Edicoes Nosso Conhecimento
Published: Jan 19 2026
Pages: 72
Weight: 0.24
Height: 0.17 Width: 6.00 Depth: 9.00
Language: Portuguese
ISBN13: 9786209511615
Publisher: Edicoes Nosso Conhecimento
Published: Jan 19 2026
Pages: 72
Weight: 0.24
Height: 0.17 Width: 6.00 Depth: 9.00
Language: Portuguese
O cabelo humano é frequentemente usado como um bioindicador da exposição ao mercúrio. O mercúrio (Hg) tem sido, há séculos, um metal útil em várias aplicações. Infelizmente, essa utilidade é contrabalançada pelo seu impacto neurotóxico na saúde. A Agência de Proteção Ambiental dos EUA recomenda manter o nível de Hg no cabelo abaixo de 1,0 g/g. Por isso, foi feita uma investigação para verificar os níveis de Hg no cabelo das pessoas que vivem na região de Terai, no norte da Índia. Amostras de cabelo foram coletadas de 111 pessoas e colocadas em sacos plásticos identificados, grampeados para evitar que os fios se movessem. As amostras foram analisadas por combustão, amálgama de ouro e espectrometria de absorção atómica (C-GA-AAS). O nível médio de Hg no cabelo foi de 0,28 g/g para todo o grupo, variando de 0,0012 a 1,9091 g/g. Os níveis médios de Hg no cabelo foram de 0,16 g/g para os homens e 0,12 g/g para as mulheres, indicando que os homens tinham níveis mais elevados de Hg no cabelo do que as mulheres. 97% da amostra total tinha concentrações de Hg no cabelo inferiores a 1,0 g/g, ou seja, dentro da dose segura, enquanto apenas 3% tinha concentrações de Hg superiores a 1,0 g/g, excedendo assim a dose segura. O Hg deve ser observado continuamente para os níveis de Hg no cabelo e a saúde.
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