佳木斯市学校教室PM<sub>2.5</sub>连续监测及学生暴露水平评价

杨文静; 樊琳; 叶丹; 王姣; 张宇晶; 闫旭; 王宇; 包名家; 王林; 王先良

doi:10.16835/j.cnki.1000-9817.2021.09.008

佳木斯市学校教室PM_2.5连续监测及学生暴露水平评价

doi: 10.16835/j.cnki.1000-9817.2021.09.008

杨文静¹,
樊琳¹,
叶丹¹,
王姣¹,
张宇晶¹,
闫旭¹,
王宇²,
包名家³,
王林¹,
王先良^1, ,

1.
中国疾病预防控制中心环境与健康相关产品安全所, 北京 100021
2.
清华大学
3.
佳木斯市疾病预防控制中心

基金项目:

托幼机构和中小学室内空气质量标准研究项目 20181903

北京市自然科学基金项目 8182055

详细信息

作者简介:
杨文静(1984-), 女, 山西大同人, 硕士, 助理研究员, 主要研究方向为环境健康防护

通讯作者:
王先良, E-mail: wangxianliang@nieh.chinacdc.cn

中图分类号: G 478 R 122 R 179
计量
- 文章访问数: 770
- HTML全文浏览量: 355
- PDF下载量: 40
- 被引次数: 0
出版历程
- 收稿日期: 2021-01-04
- 修回日期: 2021-02-14
- 网络出版日期: 2021-09-24
- 刊出日期: 2021-09-24

Continuous monitoring of fine particulate matter in school classrooms and assessment of students' exposure level

1.
National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing(100021), China

摘要

摘要: 目的了解学校室内PM_2.5污染状况和学生暴露水平，为学生健康防护提供基础数据。方法通过在线环境监测仪对佳木斯8所中小学16间自然通风教室的PM_2.5进行为期2个学期的连续监测，同时抓取室外PM_2.5数据进行对比研究，对学生在校期间暴露量进行评价。结果春、秋两学期教室内PM_2.5平均质量浓度分别为(26.93±24.7)和(31.85±30.37) μg/m³，教室内外PM_2.5 I/O值分别为0.92和0.95，存在强相关性。两学期所有教室的全天PM_2.5平均质量浓度为(28.93±26.85)μg/m³，略高于白天学生在校期间的(27.53±26.53)μg/m³，且工作日质量浓度高于周末。随着楼层升高，室内PM_2.5质量浓度逐渐下降。学生在校期间的累积暴露量，春季学期为28.48 μg /m³，秋季学期为31.87 μg /m³。结论教室内PM_2.5随时间、水平空间与垂直空间的变化会有所不同，且室内PM_2.5的污染程度极大依赖于室外污染源；春、秋两学期学生在校期间PM_2.5暴露量有所差异。
- 颗粒物 /
- 空气污染 /
- 室内 /
- 环境监测 /
- 公共卫生
Abstract: Objective To explore the status of PM_2.5 pollution in school classrooms and the student exposure level, and to provide basic data to safeguard the health of students. Methods This study continuously monitored the PM_2.5 levels of 16 naturally ventilated classrooms in eight primary and secondary schools in Jiamusi for one academic year using an online environmental monitoring instrument. At the same time, outdoor PM_2.5 data was captured for comparative research, and student exposure to PM_2.5 during school hours was evaluated. Results The average concentration of PM_2.5 in the classroom in the spring and autumn semesters was (26.93±24.7) and (31.85±30.37)μg/m³, respectively, and the indoor/outdoor ratio (I/O) was 0.92 and 0.95, respectively, which indicated a strong correlation between them. The daily average concentration of all classrooms during both semesters was (28.93±26.85)μg/m³, which was slightly higher than the average concentration of (27.53±26.53)μg/m³ during the daytime when students were in school. In addition, the concentration on workdays was higher than that observed on weekends, and this was termed the "weekend effect". The indoor PM_2.5 concentration was lower on higher floors. The comprehensive exposure concentration of students during school was 28.48 μg/m³ in spring semester and 31.87 μg/m³ in autumn semester. Conclusion PM_2.5 levels in the classrooms varied according to time, the horizontal space, and the vertical space, and the level of indoor PM_2.5 pollution largely depended on outdoor pollution sources. Differences in PM_2.5 exposure were observed between.
- Particulate matter /
- Air pollutuon /
- indoor /
- Environmental monitoring /
- Public health

HTML全文

图 1 不同学校教室春季和秋季学期的白天(8 h) PM_2.5平均质量浓度

Figure 1. Daytime (8 h) PM_2.5 concentrations in different school classrooms in spring and autumn semester

下载: 全尺寸图片幻灯片

图 2 春季学期教室PM_2.5日均质量浓度变化曲线

Figure 2. Variation curve of daily average concentration of PM_2.5 in spring semester

下载: 全尺寸图片幻灯片

图 3 秋季学期教室PM_2.5日均质量浓度变化曲线

Figure 3. Variation curve of daily average concentration of PM_2.5 in autumn semester

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表 1 教室室内全天和白天PM_2.5平均质量浓度比较/(x ±s，μg·m^-3)

Table 1. Average concentration of PM_2.5 in classrooms on weekday and weekend/(x ±s, μg·m^-3)

组别	春季			秋季			总体
组别	工作日	周末	全部	工作日	周末	全部	总体
全天	28.28±25.59	23.57±16.07	26.93±24.70	36.69±37.65	29.79±26.03	31.85±30.37	28.93±26.85
白天	27.90±28.67	22.88±16.09	25.13±22.35	35.60±33.17	28.35±23.89	30.13±28.13	27.53±26.53
Z值	2.37	0.98	2.49	0.95	0.26	1.59	2.79
P值	0.02	0.33	0.01	0.34	0.79	0.11	0.01

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表 2 不同学段学生春秋学期在校期间PM_2.5累积暴露质量浓度比较(x ±s, μg/m³)

Table 2. PM_2.5 comprehensive exposure concentration of students during the spring and autumn semester(x ±s, μg/m³)

学段	春季	秋季	Z值	P值
初中	28.56±25.89	31.00±28.18	-3.63	< 0.01
小学	28.39±35.73	32.74±31.27	-2.25	0.03
合计	28.48±35.77	31.87±31.27	-2.93	< 0.01

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