室内空气可吸入颗粒物粒径的楼层分布初探  

Preliminary Investigation on Distribution Trend of Inhalable Particles in Indoor Air at Different Floors of a Building

作　　者：周晶[1,2] 赵倩[1] 张旭[2] 陈美娟[2] 

机构地区：[1]陕西中医药大学 [2]南京中医药大学

出　　处：《环境卫生学杂志》2017年第5期348-350,共3页JOURNAL OF ENVIRONMENTAL HYGIENE

基　　金：国家自然科学基金(81503374)

摘　　要：目的研究随楼层增高室内空气可吸入颗粒物的粒径分布变化趋势。方法对竣工后使用3—6年的10层以上的宾馆和居民住宅内的室内积尘进行采样,按楼层的递增分组为<10、10~14、15~19、20~29和30以上楼层;用滤膜溶解涂片显微镜计数法测定颗粒物粒径为<1、1、2、5和10μm的分布构成比,做统计学概率分布的偏斜度分析。结果随楼层增高颗粒物分布构成由左偏分布转为右偏分布,粒径变小呈对数趋势r=0.955 7。经相关性t检验差异有统计学意义(P<0.05)。结论随着楼层的增高室内可吸入颗粒物的组成有粒径变小的趋势。室内空气可吸入颗粒物楼层分布趋势的研究,对于人们正确认识可吸入颗粒物的健康风险具有一定的参考意义。Objective To investigate the distribution trend of particle size of inhalable particles in indoor air at different floors of a building. Methods Indoor air samples were collected from hotels and residential buildings having been completed and used for 3-6 years. Samples were grouped by the floor of a building; less than 10,10 ~ 14,15 ~ 19,20 ~ 29 and more than 30 floors; the distribution of particle size, 1,1,2,5 and 10 μm,were measured under microscope,and the constituent ratio was analyzed by the statistical probability distribution of skewness. Results As the increase of the floor of a building,the distribution of particles was changed from a leftskewed distribution to a right-skewed distribution; the particle size became smaller with the increase of the floor height under a logarithm trend（ r = 0. 955 7）. The correlation tested by t test was significant（ P 0. 05）. Conclusions The size of particulate matters in indoor air became smaller as the floor of a building was higher. The research on the distribution of inhalable particles in indoor air at different floor height has certain reference significance to help people correctly recognize and control the health hazards of inhalable particulate matters.

关 键 词：室内空气污染 可吸入颗粒物 粒径构成比 分布趋势 

分 类 号：X513[环境科学与工程—环境工程]