Study Of TVOC In Underground Stores In Chongqing

With the improvement of living standards, the number and variety of indoor air pollutants are increasing. At the same time, the increase of confined degree in buildings lead to further increase in the concentration of air pollutants, which making a gradual deterioration of indoor air quality. Currently, indoor air quality has become the main contradiction and focus of complaints in indoor environment field, all people concern it. So it is important and urgent.However, the indoor air pollution of underground shopping malls always been overlooked. Due to population growth and urbanization, the space on the ground is becaming more crowded. So the underground space exploitation to be more and more important. As one of typical ways of underground space exploiture, underground shopping malls have been rapid development in recent years. However, it can not improve the indoor micro-climate through natural ventilation such as open the doors and windows. It is only use of mechanical ventilation methods, so cause the staff who long-term work in the underground shopping malls have been more and more adverse reactions. Research shows that the the incidence of Sick Building Syndrome in underground shopping malls is much higher than the floor shopping malls. As a result, researchs on indoor air quality of the underground shopping malls are significant, which improving indoor air quality, protecting people's health and promoting the development and utilization of underground space.In this paper, it has analysed the TVOC's polluted status quo of underground shopping malls in Chongqing through experimentation and data processing. It has known the correlation through curve regression analysis between the TVOC concentration and the air temperature and flow in underground shopping malls. From monitoring and analysis of TVOC's background value and sources we know that the contribution of TVOC concentration in underground shopping malls. By continuous monitoring and curve regression analysis we know the relation between TVOC concentration and people flow in underground shopping malls.According to survey results: the air quality as a whole tends to be"middle"level in underground shopping malls of Chongqing, the sick building syndrome have been widespread, the overall assessment average results are 3.22 on Indoor air quality, which is below the middle level that most people have been hard to accept.According to experimental results: It is serious that the pollution of TVOC in Chongqing's underground shopping malls, It is significant linear correlation between the TVOC concentration and the air temperature and flow in underground shopping malls of Chongqing, the main VOC resource of underground shopping malls are goods and decoration in Chongqing. It is a certain degree of correlation between the TVOC concentration and the people flow of underground shopping malls in Chongqing.According to the findings of this paper, we put forward a series of pollution control measures for air pollution of underground shopping malls in Chongqing.