Formaldeído em habitações domésticas: contaminação ambiental e potenciais fontes

Autores

  • Susana Viegas Área Científica de Saúde Ambiental, Escola Superior de Tecnologia da Saúde de Lisboa, Instituto Politécnico de Lisboa. Lisboa, Portugal. Centro de Investigação e Estudos em Saúde Pública, Escola Nacional de Saúde Pública, Universidade Nova de Lisboa. Lisboa, Portugal.
  • João Prista Centro de Investigação e Estudos em Saúde Pública, Escola Nacional de Saúde Pública, Universidade Nova de Lisboa. Lisboa, Portugal.

DOI:

https://doi.org/10.25758/set.384

Palavras-chave:

Formaldeído, Habitações domésticas, Qualidade do ar interior, Fontes emissoras

Resumo

Do ponto de vista das preocupações de saúde, os níveis de contaminação do ar interior assumem actualmente uma elevada importância quando se tem em consideração que as pessoas passam a maior parte do seu tempo no interior de edifícios. Neste contexto, o formaldeído é um dos poluentes mais preocupantes e, inclusivamente, os resultados de concentração obtidos em habitações do espaço Europeu foram considerados preocupantes devido ao facto de estarem relacionados com efeitos negativos para a saúde. O estudo exploratório desenvolvido pretendeu disponibilizar informação acerca das concentrações de formaldeído existentes em habitações domésticas portuguesas. Estudou-se a presença de formaldeído em habitações novas e habitações domésticas com ocupação, abrangendo 6 unidades de cada um dos tipos considerados. Para a avaliação ambiental foi utilizado um equipamento de leitura direta que deteta as concentrações de formaldeído por fotoionização com uma lâmpada de 11,7 eV. A temperatura ambiente e a humidade relativa foram igualmente medidas, de acordo com o estipulado na Norma Internacional ISO 7726:1998. No caso das habitações novas foram registados valores de concentração superiores a 0,08 ppm em 3 das unidades estudadas. Por outro lado, em 4 das habitações com ocupação foram obtidos valores superiores a 0,08 ppm. O desenvolvimento deste estudo permitiu reconhecer algumas das possíveis fontes emissoras e os factores que influenciam as concentrações de formaldeído nas habitações em Portugal.

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Publicado

15-11-2011

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Formaldeído em habitações domésticas: contaminação ambiental e potenciais fontes. (2011). Saúde & Tecnologia, 06, 10-16. https://doi.org/10.25758/set.384