A Study of the Differential Impact of Macro-Urban Development on Residential Indoor Air Pollution

Abstract

The data distribution characteristics of indoor air pollutant concentrations in Beijing, Changchun, Shanghai, Jinan, and Zhengzhou were analyzed by quartile partitioning and combined with the composite indoor air quality index (IAQI). Finally, the indoor air quality evaluation equations were established based on the results. The entropy value method is used to construct a coupled and coordinated urban development model and combined with the Tapio elastic decoupling model to macroscopically analyze the impact of urban development factors on indoor air quality. The study results show that the indoor air pollutant concentration data of the five cities are overall high, with different degrees of deviation from the mean, and the pollutants that contribute the most are TVOC and formaldehyde. In descending order, the average indoor air quality index (IAQI) values from the results are Changchun, Shanghai, Beijing, Jinan, and Zhengzhou; based on the results of the study, the recommended pollutant concentration limits to keep the overall IAQI below the mean are formaldehyde (0.063 mg/m³), benzene (0.011 mg/m³), toluene (0.027 mg/m³), xylene (0.03 mg/m³) and TVOC (0.291 mg/m³); Beijing and Shanghai have a high degree of coupled and coordinated urban development and serious indoor air pollution. Zhengzhou and Jinan showed mainly strong negative decoupling and expansion negative decoupling of real estate construction and economic and urbanization level development during the study years, and the economy and real estate construction were disconnected from the urbanization development, and indoor air pollution was lighter in the two cities. In Changchun, there was a "property boom" in 17-19, and in a cold region, indoor ventilation was poor, and indoor air pollution increased significantly.