Coleta de amostras da diversidade microbiana do ar e análise da qualidade do ar em um ambiente escolar brasileiro
DOI:
https://doi.org/10.33448/rsd-v14i5.47514Palavras-chave:
Contaminação do ar, Ambiente escolar, Amostragem microbiana, Sedimentação simples, Áreas internas e externas, Análise microbiana.Resumo
Os microrganismos são componentes essenciais dos ecossistemas, desempenhando papéis cruciais na manutenção da saúde ambiental, humana e animal. No contexto de saúde pública e One Health, a compreensão da dinâmica desses organismos no ambiente é fundamental para a prevenção e controle de doenças. O presente estudo visa investigar a diversidade de bactérias transportadas pelo ar em um ambiente escolar em Cuiabá, uma cidade da região Centro-Oeste do Brasil, utilizando a técnica de sedimentação simples. Amostras de ar foram coletadas em locais internos e externos, incluindo um banheiro, refeitório, sala dos professores, área de recepção, sala de aula e uma quadra esportiva ao ar livre. Em cada local, duas placas de Petri foram expostas por 15 minutos. As amostras foram então incubadas por 48 horas a uma temperatura controlada de 37°C, seguido de análise morfológica e exame microscópico. De forma inesperada, as áreas externas, particularmente a quadra esportiva, apresentaram concentrações mais elevadas de bactérias, uma tendência que contrasta com a suposição comum de maior carga microbiana em ambientes fechados devido à ventilação limitada, demonstrando que ainda que haja uma ventilação natural, estes ambientes requererem uma análise mais cuidadosa nos esforços para garantir a qualidade do ar em espaços públicos. Além disso, foi observado crescimento de fungos em duas amostras, destacando ainda mais os potenciais riscos ambientais. Esses resultados enfatizam a importância de melhorias nas estratégias de higiene e gestão ambiental em ambientes escolares para mitigar os riscos à saúde associados à exposição a microrganismos transportados pelo ar.
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