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[目的]探讨不同城市住宅室内空气质量及其影响因素。[方法]通过对湖南省5城市住宅室内二氧化碳、二氧化硫、一氧化碳、PM10、甲醛的检测,采用综合评价方法研究住宅室内空气质量及不同污染物对综合指数的影响程度。[结果]住宅中挥发性有机物甲醛是影响综合指数的主要因素,5城市室内空气质量基本位于未污染范围,其平均综合指数为0.324～0.609,室外空气质量基本属于清洁范围,其平均综合指数为0.321～0.547,空气质量好于室内。[结论]甲醛是影响综合指数的主要因素,也是当前住宅中危害最大的室内污染物。5城市住宅室内空气质量优劣顺序为:衡阳市、株洲市、怀化市、益阳市、长沙市。
[Objective] To study the indoor air quality in different cities and its influencing factors. [Method] The indoor air quality of residential buildings and the effect of different pollutants on the comprehensive index were studied by using the comprehensive evaluation method to detect indoor CO2, sulfur dioxide, carbon monoxide, PM10 and formaldehyde in 5 cities of Hunan Province. [Result] Formaldehyde in residential buildings was the main factor affecting the composite index. The indoor air quality in 5 cities was basically in the uncontaminated area, the average comprehensive index was 0.324 ~ 0.609, and the outdoor air quality belonged to the clean range. The average comprehensive index was 0.321 ~ 0.547, the air quality is better than indoors. [Conclusion] Formaldehyde is the main factor affecting the composite index and also the most harmful indoor pollutant in residential buildings. 5 city residential indoor air quality advantages and disadvantages of order: Hengyang City, Zhuzhou City, Huaihua City, Yiyang City, Changsha City.