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目的 了解贵阳市中年知识分子家庭空气质量相对清洁值。方法 随机抽取贵阳市城中心区（相对污染区）和清洁区部分中年知识分子家庭进行入户监测其居室内ＣＯ、ＣＯ２、可吸入尘、细菌总数等指标的空气质量。结果贵阳市中年知识分子居室内空气质量较差，突出的污染物是ＣＯ；污染区各项指标均大于清洁区（Ｐ＜０．０５）污染区的ＣＯ、细菌总数及清洁区ＣＯ含量大于贵州省卫生防疫站提供的空气质量相对清洁值。结论 居室内空气污染是影响中年知识分子健康的危险因素之一，应该引起足够的重视。
Objective To understand the relative cleanliness of household air quality of middle-aged intellectuals in Guiyang. Methods The air quality of Guiyang downtown area (relative contaminated area) and some middle-aged intellectuals in clean area households were randomly selected to monitor the indoor CO, CO2, respirable dust and total bacterial count. Results The middle-aged intellectuals in Guiyang had poor indoor air quality and the prominent pollutants were CO. The indexes in the contaminated area were all greater than that in the clean area (P <0.05), the total number of bacteria and the CO content in the clean area were greater than Guizhou Province Health and Epidemic Prevention Station provides relatively clean air quality value. Conclusion Indoor air pollution is one of the risk factors affecting the health of middle-aged intellectuals and should be given enough attention.