Avaliação da qualidade do ar em ambientes internos: biblioteca pública / Indoor air quality investigation: public library

AUTOR(ES)
DATA DE PUBLICAÇÃO

2011

RESUMO

Over fifteen months, levels of temperature, humidity, noise, light intensity, contamination by carbon dioxide, total suspended particles (TSP) and respirable fractions (PM1, PM2.5, PM7 and PM10) were monitored at the Public Library Amadeu Amaral at São Carlos, SP. Investigation of the ventilation rate and occupancy, concentration of bioaerosols and identification were also performed. In addition, a questionnaire was handed over to the occupants of the site in order to raise the main complaints related to indoor air quality. The results showed the discomfort of the place at all rooms monitored, high levels of noise from the outside environment, inadequacies relating to the site illumination and special attention to the building occupancy. During some measurements, the noise levels exceeded the barrier of 80 dB (A), which is above the recommended standards and proved to be a risk factor for its users and employees. No problems were found related to the site biological contamination, analyzing the concentration of bacteria and fungi. The ventilation rate has adequate value to the first floor and carbon dioxide concentration was maintained in accordance with the standards. The questionnaire responses confirm the main findings to the library, such as high noise levels, thermal discomfort and the illumination problem. The main recommendations are based on the need of gravimetric particulate matter investigation and development of specific studies for the adoption of mitigation measures on noise pollution and also the suitability of the rooms to the thermal comfort of occupants.

ASSUNTO(S)

indoor air air quality ambientes internos bibliotecas públicas public libraries qualidade do ar

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