摘要
为了解高层公寓建筑室内外污染状况,对自然通风状态下的西安市某临近道路的学生公寓楼室内外颗粒物浓度进行了同步测试。结果表明:室内外颗粒物污染较严重,其中细颗粒物占可吸入颗粒物的主要部分,且室内外颗粒物浓度变化呈现较好的一致性,室外细颗粒物占可吸入颗粒物比例的波动程度大于室内;沿楼层高度方向颗粒物浓度基本呈双峰分布;在没有明显室内污染源的情况下,PM_(2.5)和PM_(10)的室内外颗粒物浓度比值(I/O)通常小于1,在有明显室内污染源的情况下,PM_(2.5)和PM_(10)的I/大于1;I/O会随着颗粒物粒径减小而逐渐增加;自然通风建筑室内外颗粒物浓度之间存在明显的线性相关性;对于临近道路的建筑,室内PM_(2.5)浓度受室外浓度影响大于PM_(1.0)和PM_(10)。
In order to understand the indoor and outdoor pollution situation of high-rise apartment buildings,the indoor and outdoor particulate matter concentrations of one apartment building nearby the road in Xi＇ an city under natural ventilation were simultaneously tested. The results show that the indoor and outdoor particulate matter pollution is serious and fine particles accounts for the main part of inhalable particles. The changes of indoor and outdoor concentrations present good consistency,the fluctuations of percentage of fine particles in outdoor PM_（10） are greater than indoor,and the particulate matter concentrations along the height direction of the building exhibit bimodal distribution. In the absence of clear indoor pollution sources,the I/O ratio of PM_（2.5）and PM_（10） is usually less than 1,while the I/O ratio of PM_（2.5）and PM_（10） is greater than 1 if there are obvious pollution sources in indoor.The I/O ratio decreases as the size of particles increases. There is a certain linear relationship between the concentrations of indoor and outdoor particles and,for high-rise apartment buildings near the road,the indoor PM2. 5concentration is effected by the outdoor concentration more than PM_（1.0）and PM_（10）.
出处
《环境工程技术学报》
CAS
2016年第3期223-228,共6页
Journal of Environmental Engineering Technology
基金
中国博士后面上项目(20090461287)
