Formaldehyde and Inhalable Particulate Matter in Indoor Air of Public Places in Zunyi City

Objectives To investigate the status of indoor air pollution in public places in order to provide scientific basis for enacting relevant measures.

Methods Monitoring concentration of formaldehyde, inhalable particulate matter (PM₁₀), temperature and relative humidity in indoor air on site, and using Epidata 3.0 and SPSS 20.0 software to input and analyze data.

Results The concentration of formaldehyde and inhalable particulate matter in 52.3% and 35.6% of public places monitored in this survey exceeded the limits of the Chinese national standard for indoor air quality. A significantly positive correlation between the concentration of formaldehyde and relative humidity in indoor air was revealed (P < 0.01).

Conclusions The pollution of formaldehyde and inhalable particulate matter in indoor air of public places in Zunyi city was common, which might be harmful to human health. Relevant public health measures should be enacted to improve the quality of indoor air.