【摘要】 目的 对比分析贵阳市某高校男女学生寝室内PM_2.5浓度及污染特征，了解寝室内PM_2.5污染情况。方法 于2022年11月在贵阳市某高校采用方便抽样与自愿响应抽样的方法，抽取4间男生寝室和4间女生寝室，使用中流量总悬浮颗粒物智能采样器采集和分析寝室内外PM_2.5浓度，同时记录采样现场的温湿度。结果 学生寝室内外PM_2.5浓度M(P₂₅,P75)分别为41.6（32.9,53.9）μg/m³、40.3（33.8,54.9）μg/m³，总体均低于标准限值，但室外浓度整体高于贵阳市同时段PM_2.5的监测水平。男生寝室内PM_2.5浓度M(P₂₅,P75)为46.6（39.4,55.3）μg/m³，女生寝室内PM_2.5浓度为39.2（31.8,46.0）μg/m³，两者差异无统计学意义（U=274.000,P=0.054）。男、女寝室内外PM_2.5浓度比值（I/O比值）分别为1.14（1.02～1.26）、0.87（0.78～0.96），男寝室I/O比值大于女寝室，差异有统计学意义（U=149.000,P<0.001）。男、女寝室内PM_2.5浓度与室外均呈正相关，且女寝室内PM_2.5浓度与室外的相关性较男寝室更高（男寝室r_s=0.775，女寝室r_s=0.882）。男寝室内PM_2.5浓度与室内温度有弱正相关性。结论 贵阳市某高校学生寝室内外PM_2.5浓度总体低于标准限值。男寝室有更多的室内污染源，而女寝室内PM_2.5污染主要来自于室外污染源，建议针对男女寝室PM_2.5污染采取不同的防护措施。更多还原

【Abstract】 Objective To know the pollution characteristics of PM_2.5 in male and female student dormitories in a university in Guiyang,thereby gaining a deeper understanding of the PM_2.5 pollution conditions within these dormitory environments. Methods In November 2022,4 male dormitories and 4 female dormitories were chosen by using convenient sampling and voluntary response sampling methods in a university,Guiyang City. The indoor and outdoor PM_2.5 data were collected and analyzed by using a medium-flow intelligent total suspended particulate matter sampler,and the temperature and humidity at the sampling site were recorded. Results The indoor and outdoor PM_2.5 concentrations in student dormitories were 41.6（32.9,53.9） μg/m³ and 40.3（33.8,54.9） μg/m³,respectively,both remaining below the standard limit. However,the outdoor concentration was generally higher than the PM_2.5levels concurrently monitored in Guiyang. The PM_2.5 concentrations in male and female dormitories were46.6（39.4,55.3） μg/m³ and 39.2（31.8,46.0） μg/m³,respectively. No significant difference was observed between the two groups（P>0.05）. PM_2.5 ratios of indoor and outdoor in male and female student dormitories（expressed as I/O） were 1.14（1.02-1.26） and 0.87（0.78-0.96）,respectively,which indicated I/O in male student dormitories was greater than that of female student dormitories（P<0.001）. Indoor PM_2.5 of male and female student dormitories were positively correlated with those of outdoor PM_2.5（male student dormitories:r_s=0.775,female student dormitories:r_s=0.882）. Indoor PM_2.5 in the male student dormitories had a weak positive correlation with indoor temperature. Conclusion The indoor and outdoor PM_2.5 concentrations in the dormitories of a university in Guiyang were generally below the standard limit. Male dormitories exhibited more indoor sources of PM_2.5,primarily attributable to indoor activities,whereas the PM_2.5 in female dormitories was predominantly influenced by outdoor sources. Targeted protective measures should be implemented in the future to address PM_2.5 pollution more effectively in each type of dormitory.更多还原