Evaluation of indoor air quality in an emporium in Ma’anshan city

Measures the environmental parameters such as formaldehyde concentration， carbon dioxide concentration， colony forming units of microorganism， temperature， relative humidity and air velocity. Surveys the evaluation of the employees and customers on the indoor air quality by questionnaires. The results of the objective and subjective assessment indicate that the concentrations of airborne contaminations are lower than the values specified in the national IAQ standard， but the problems of IAQ still exist.