大学生公寓内PM2.5暴露水平影响因素分析

发布时间：2018-04-06 05:02

本文选题：环境污染　切入点：因素分析　出处：《中国学校卫生》2017年07期

【摘要】：目的探讨室外环境与室内人员活动/行为对大学生公寓内细颗粒物PM2.5污染的影响,为保护大学生身体健康提供科学依据。方法对北京市大兴区某高校校园9间大学生公寓室内外PM2.5浓度实时连续监测7 d,同时对大学生的时间—行为活动模式进行问卷调查。结果公寓是大学生最主要的室内活动场所,每天在公寓内的时间为13.30h,占55.4%。公寓内PM2.5日均体积质量比范围为39.3~584.1μg/m~3,超标率为66.7%~85.7%;室外PM2.5日均体积质量比范围为76.5~493.2μg/m~3,超标率为100%;室内外日均PM2.5体积质量比I/O比均值为0.84。相关分析结果表明,公寓内PM2.5浓度与室外浓度、室内外温差、室外相对湿度、风速的相关均有统计学意义(r值分别为0.792,-0.535,0.634,-0.547,P值均0.01)。公寓内人员活动/行为影响室内PM2.5浓度和I/O比(P值均0.05)。结论在室外环境条件和室内人员的综合影响下,大学生公寓内PM2.5污染严重。应采取适当措施降低大学生公寓内PM2.5暴露水平。
[Abstract]:Objective to investigate the effects of outdoor environment and indoor activities / behaviors on PM2.5 pollution of fine particles in college students' apartments and to provide scientific basis for the protection of college students' health.Methods the concentration of PM2.5 in and out of 9 college students' apartments in Daxing District of Beijing was monitored continuously for 7 days, and the time-behavioral activity pattern of college students was investigated by questionnaire.Results the apartment was the most important indoor activity place for college students, and the time in the apartment was 13.30 hours per day, accounting for 55.45 hours.The average daily volume / mass ratio of PM2.5 in apartment is 39.3 / 584.1 渭 g / m ~ (3) and the ratio of exceeding the standard is 66.7% and 85.7%; the range of outdoor PM2.5 's daily volume / mass ratio is 76.5N 493.2 渭 g / m ~ (3), the rate of exceeding the standard is 100; the average volume / mass ratio of indoor and outdoor daily PM2.5 is 0.844.The average daily volume / mass ratio of indoor and outdoor PM2.5 is 0.84.The results of correlation analysis showed that the correlation between PM2.5 concentration and outdoor concentration, indoor and outdoor temperature difference, outdoor relative humidity and wind speed was statistically significant (r = 0. 792- 0. 535U, 0. 634U-0. 547p, P = 0. 01).The activity / behavior of the people in the apartment affected the indoor PM2.5 concentration and the I / O ratio (P).Conclusion under the comprehensive influence of outdoor environmental conditions and indoor personnel, PM2.5 pollution in college students' apartments is serious.Appropriate measures should be taken to reduce the level of PM2.5 exposure in college students' apartments.
【作者单位】：北京建筑大学供热供燃气通风及空调工程北京市重点实验室;
【基金】：北京市教委科技计划项目(KM201410016014) 北京建筑大学科学研究基金项目(331613017)
【分类号】：G647.4;R12

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