JiSMART2021—042: Investigation on VOCs of Indoor Air in Changchun During Heating Period

Abstract

The emissions and concentrations of VOCs of indoor environments are strongly associated with human health. This study collect architectural characteristics, indoor temperature and humidity, ventilation frequency, satisfaction and other information from 264 residents through a questionnaire survey in Changchun. Using the Chi-square test of SPSS software, it is concluded that there is a significant difference between residents' satisfaction with indoor temperature and ventilation frequency. At the same time, VOCs concentrations in five residential houses was measured in the summer and winter respectively. The results showed that the concentrations of VOCs of indoor air of the same room measured in winter is higher than that in summer, which is 1.3~2.9 times. Among them, the concentrations of the main bedroom of one household in winter is higher than Standard value (0.60 mg/m3) of the "Indoor Air Quality Standard" (GB/T 18883-2002), which seriously threatens the health of residents. According to the questionnaire, 72.7% of respondents said they were willing to install fresh air system. So the conclusion is that in colder climates, it would be beneficial to install fresh air systems in healthier buildings in order to ensure comfort and health for residents.