南京市居室内SO_2、HCHO和TVOCs污染的研究

Indoor air levels of SO_2、HCHO and TVOCs in dwellings in Nanjing

于2005年夏季(8月)和冬季(12月)在南京市的市区和近郊区各选择了20家具有不同房屋特征的住户,分别对其室内空气中SO2、HCHO和TVOCs的浓度进行了监测.研究结果表明,室内SO2、HCHO和TVOCs在温度高、相对湿度高、空气流通量大的夏季,浓度都会超出标准值,这3种物质的浓度在冬季会有所下降.装饰和装修材料是室内HCHO和TVOCs的主要来源,同时厨房内的烹调活动对室内TVOCs的浓度也有一定的贡献.市区和近郊区室外空气中SO2的浓度都较高,且I/O值≤1,因此,可推断室外空气中的SO2是室内空气中SO2的主要来源.

The concentrations of SO2 , HCHO and TVOCs in 20 households characterized by different dwelling factors in the urban and suburb of Nanjing were measured in the summer （August） and winter （December） of the year 2005. The results indicate that the concentrations of SO2 , HCHO and TVOCs exceed the standard value in summer when temperature is high, relative humidity is high and ventilation is high, and decrease in winter, The decoration materials and constructions are the main sources of indoor HCHO and TVOCs. In addition, cooking in the kitchen is also contributed to indoor TVOCs. The concentration of outdoor SO2 in the urban and suburb is quite high, and the I/O value is not more than 1, so it is expected that the high Concentration of outdoor SO2 is the main source of indoor SO2.