Loading...
Publication
Qualidade do Ar em Bibliotecas: Parâmetros de Conforto e Saúde em Ambiente de Leitura
| Name: | Description: | Size: | Format: | |
|---|---|---|---|---|
| 5.3 MB | Adobe PDF |
Authors
Abstract(s)
A Qualidade do Ar Interior (QAI) tem-se consolidado como uma ferramenta fundamental para a promoção da saúde pública e a preservação patrimonial, especialmente em espaços de uso coletivo e com acervos sensíveis, como as bibliotecas. Diante disso, o presente trabalho teve como objetivo caracterizar a Qualidade do Ar Interior (QAI) da biblioteca da Escola Superior Agrária do Instituto Politécnico de Bragança, com base na monitorização de parâmetros físico-químicos e microbiológicos durante o outono, inverno e primavera. Foram também avaliados os fatores que influenciam a QAI e a conformidade com a legislação portuguesa.
Foram analisados indicadores de conforto térmico, nomeadamente a temperatura e a humidade relativa (HR), bem como poluentes físico-químicos e microbiológicos, tais como material particulado (PM10 e PM2,5), dióxido de carbono (CO₂), formaldeído (CH₂O), compostos orgânicos voláteis (COVs), monóxido de carbono (CO) e poluentes microbiológicos (fungos e bactérias).
Os resultados revelaram variações sazonais e espaciais relevantes. A humidade relativa (HR) manteve-se abaixo dos níveis recomendados (23,5 a 39,4%), representando riscos à saúde dos ocupantes e à preservação do acervo documental. As temperaturas estiveram frequentemente fora da faixa ideal, especialmente em zonas não climatizadas. Parâmetros físico-químicos encontraram-se dentro dos limites legais, apesar dos picos de COVs associados ao uso de álcool 70% durante as medições microbiológicas.
Quanto aos poluentes microbiológicos, foram identificados 17 géneros de fungos, com predominância de Cladosporium, Penicillium e Aspergillus. A razão Interior/Exterior (I/E) indicou que a origem desses fungos foi predominantemente externa (I/E < 1). A presença desses géneros é preocupante tanto para a saúde dos ocupantes quanto para a preservação do acervo. Nenhuma bactéria foi observada, o que pode ser atribuído à baixa humidade relativa que pode ter afetado a sua viabilidade.
A caracterização evidenciou pontos críticos relacionados à HR e temperatura, agravados pelo funcionamento intermitente da UTA e pela falta de monitorização destes parâmetros.
Recomenda-se a implementação de um sistema integrado de controlo e monitorização ambiental e o uso de humidificadores.
Indoor Air Quality (IAQ) has established itself as a fundamental tool for promoting public health and heritage preservation, especially in public spaces and those with sensitive collections, such as libraries. Therefore, this study aimed to characterize the Indoor Air Quality (IAQ) of the library of the Escola Superior Agrária of the Polytechnic Institute of Bragança, by monitoring physical, chemical, and microbiological parameters during the fall, winter, and spring. Factors influencing IAQ and compliance with Portuguese legislation were also assessed. Indicators of thermal comfort, namely temperature and relative humidity (RH), as well as physical, chemical, and microbiological pollutants, such as particulate matter (PM10 and PM2.5), carbon dioxide (CO₂), formaldehyde (CH₂O), volatile organic compounds (VOCs), carbon monoxide (CO), and microbiological pollutants (fungi and bacteria), were analyzed. The results revealed significant seasonal and spatial variations. Relative humidity (RH) remained below recommended levels (23.5 to 39.4%), posing risks to the health of occupants and the preservation of the documentary collection. Temperatures were frequently outside the ideal range, especially in non-climate-controlled areas. Physicochemical parameters were found within legal limits, despite peaks in VOCs associated with the use of 70% alcohol during microbiological measurements. Regarding microbiological pollutants, 17 fungal genera were identified, with Cladosporium, Penicillium, and Aspergillus predominating. The Indoor/Outdoor (I/E) ratio indicated that these fungi originated predominantly from the outside (I/E < 1). The presence of these genera is a concern for both the health of occupants and the preservation of the collection. No bacteria were observed, which can be attributed to the low relative humidity, which may have affected their viability. The characterization revealed critical points related to RH and temperature, exacerbated by the intermittent operation of the ATU and the lack of monitoring of these parameters. It is recommended to implement an integrated environmental control and monitoring system and the use of humidifiers.
Indoor Air Quality (IAQ) has established itself as a fundamental tool for promoting public health and heritage preservation, especially in public spaces and those with sensitive collections, such as libraries. Therefore, this study aimed to characterize the Indoor Air Quality (IAQ) of the library of the Escola Superior Agrária of the Polytechnic Institute of Bragança, by monitoring physical, chemical, and microbiological parameters during the fall, winter, and spring. Factors influencing IAQ and compliance with Portuguese legislation were also assessed. Indicators of thermal comfort, namely temperature and relative humidity (RH), as well as physical, chemical, and microbiological pollutants, such as particulate matter (PM10 and PM2.5), carbon dioxide (CO₂), formaldehyde (CH₂O), volatile organic compounds (VOCs), carbon monoxide (CO), and microbiological pollutants (fungi and bacteria), were analyzed. The results revealed significant seasonal and spatial variations. Relative humidity (RH) remained below recommended levels (23.5 to 39.4%), posing risks to the health of occupants and the preservation of the documentary collection. Temperatures were frequently outside the ideal range, especially in non-climate-controlled areas. Physicochemical parameters were found within legal limits, despite peaks in VOCs associated with the use of 70% alcohol during microbiological measurements. Regarding microbiological pollutants, 17 fungal genera were identified, with Cladosporium, Penicillium, and Aspergillus predominating. The Indoor/Outdoor (I/E) ratio indicated that these fungi originated predominantly from the outside (I/E < 1). The presence of these genera is a concern for both the health of occupants and the preservation of the collection. No bacteria were observed, which can be attributed to the low relative humidity, which may have affected their viability. The characterization revealed critical points related to RH and temperature, exacerbated by the intermittent operation of the ATU and the lack of monitoring of these parameters. It is recommended to implement an integrated environmental control and monitoring system and the use of humidifiers.
Description
Mestrado de dupla diplomação com o Centro Federal de Educação Tecnológica de Minas Gerais, CEFET-MG
Keywords
Qualidade do ar interior Conforto térmico Poluente físico-químicos Poluentes microbiológicos Bibliotecas universitárias