摘要
基于PM2.5及TVOC对于人体的危害,以探究西藏大学校园内学生所处的环境质量为目的,通过便携式检测仪对宿舍进行PM2.5、TVOC的测定。结果表明,对抽样的学生宿舍24 h检测发现,PM2.5呈现六个高峰,最大质量浓度为457μg·m-3,最小质量浓度为3μg·m-3,平均质量浓度为44.23μg·m-3,空气环境质量等级为良。TVOC浓度均值为0.45 mg·m-3,在规定的安全浓度范围内。抽烟与点藏香的数量与PM2.5、PM10呈正相关关系。宿舍PM2.5浓度的波动范围与抽烟、点藏香有直接的关系。同时,宿舍通风面积为0.3~0.5 m2,PM2.5浓度约50 min才能恢复为日常浓度;通风面积越大,宿舍内PM2.5浓度降低速率越高。因此,倡导无烟宿舍有利于学生们提高学习效率以及睡眠质量。
Based on the harm of PM2.5 and TVOC to human body,in order to explore the environmental quality of students in the campus of Xizang University,the portable detector was used to measure PM2.5 and TVOC in the dormitory.The results showed that six peaks of PM2.5 were detected in the sampled dormitory for 24 hours,with the maximum concentration of 457μg·m-3 and the minimum concentration of 3μg·m-3,and the average annual concentration of 44.23μg·m-3.The air quality level was good.The average TVOC concentration is 0.45,within the prescribed safe concentration range.The number of smoking and burning incense was positively correlated with PM2.5 and PM10.The fluctuation range of PM2.5 concentration in dormitory is directly related to smoking and burning incense.At the same time,the ventilation area of the dormitory is 0.3-0.5 m2,and it takes about 50 minutes for the PM2.5 concentration to return to the daily concentration.The greater the ventilation area,the higher the reduction efficiency of PM2.5 concentration in the dormitory.Therefore,advocating smoke-free dormitory is beneficial to improve studentsstudy efficiency and sleep quality.
作者
隽超
陈志伟
李伟
Juan Chao;Chen Zhiwei;Li Wei(School of Science,Xizang University,Lhasa 850000,China)
出处
《云南化工》
CAS
2021年第5期72-74,共3页
Yunnan Chemical Technology
基金
西藏大学大学生创新项目基金(2019XCX010)
中央支持地方高校改革发展专项资金(藏财预指[2019]01号
[2020]01号)
西藏大学2020年校级“课程思政”教育教学改革示范课程(ZDK2020-12)
作者简介
隽超(1999-),男,本科生,西藏大学理学院,主要从事化学方面研究。
