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

YANG Wenjing; FAN Lin; YE Dan; WANG Jiao; ZHANG Yujing; YAN Xu; WANG Yu; BAO Mingjia; WANG Lin; WANG Xianliang

doi:10.16835/j.cnki.1000-9817.2021.09.008

Volume 42 Issue 9

Sep. 2021

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Article Navigation > CHINESE JOURNAL OF SCHOOL HEALTH > 2021 > 42(9): 1306-1310

YANG Wenjing, FAN Lin, YE Dan, WANG Jiao, ZHANG Yujing, YAN Xu, WANG Yu, BAO Mingjia, WANG Lin, WANG Xianliang. Continuous monitoring of fine particulate matter in school classrooms and assessment of students' exposure level[J]. CHINESE JOURNAL OF SCHOOL HEALTH, 2021, 42(9): 1306-1310. doi: 10.16835/j.cnki.1000-9817.2021.09.008

Citation:

YANG Wenjing, FAN Lin, YE Dan, WANG Jiao, ZHANG Yujing, YAN Xu, WANG Yu, BAO Mingjia, WANG Lin, WANG Xianliang. Continuous monitoring of fine particulate matter in school classrooms and assessment of students' exposure level[J]. CHINESE JOURNAL OF SCHOOL HEALTH, 2021, 42(9): 1306-1310. doi: 10.16835/j.cnki.1000-9817.2021.09.008

Citation:

YANG Wenjing, FAN Lin, YE Dan, WANG Jiao, ZHANG Yujing, YAN Xu, WANG Yu, BAO Mingjia, WANG Lin, WANG Xianliang. Continuous monitoring of fine particulate matter in school classrooms and assessment of students' exposure level[J]. CHINESE JOURNAL OF SCHOOL HEALTH, 2021, 42(9): 1306-1310. doi: 10.16835/j.cnki.1000-9817.2021.09.008

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

doi: 10.16835/j.cnki.1000-9817.2021.09.008

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

Received Date: 2021-01-04
Rev Recd Date: 2021-02-14

Available Online: 2021-09-24

Publish Date: 2021-09-24

Abstract

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

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References

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