评估学校的室内空气质量:室内环境是在高污染期间的避风港吗?
Li Sun1,2,3, Peng Wei4, Dane Westerdahl3
1Jiangsu Provincial Key Laboratory of Environmental Engineering, Jiangsu Provincial Academy of Environmental Science, Nanjing 210036, China.
Toxics
|August 28, 2024
概括
香港学校的室内空气质量往往超过室外污染水平,特别是PM10和NO2. 高二氧化碳表示的通风不良是一个问题,尽管空气过显示了一些好处.
科学领域:
- 环境科学 环境科学
- 公共卫生 公共卫生
- 室内空气质量 室内空气质量
背景情况:
- 城市空气污染对包括学生在内的弱势群体构成风险.
- 评估学校的室内空气质量对于保护儿童健康至关重要.
- 现有的空气质量监测可能无法完全捕捉室内暴露动态.
研究的目的:
- 评估香港学校的室内与室外污染物水平 (NO2,O3,PM2.5,PM10).
- 评估室内污染物度与空气质量健康指数 (AQHI) 之间的关系.
- 为了确定建筑操作和空气过在减轻室内污染暴露方面的有效性.
主要方法:
- 利用低成本的基于传感器的监视器,同时进行室内和室外空气质量测量.
- 收集有关二氧化 (NO2),臭氧 (O3),颗粒物 (PM2.5,PM10) 和二氧化碳 (CO2) 的数据.
- 测量室内污染物水平与室外水平进行比较,并计算室内AQHI值.
主要成果:
- 学校的室内和室外污染物水平通常反映了已建立的监测站模式.
- 室内AQHI水平通常低于室外水平,室内PM10的贡献更大.
- 在一所学校观察到室内NO2升高,CO2水平经常超过指导方针,表明通风不足.
- 空气过降低了室内PM,但水平仍与室外度相当;室内O3始终低于室外.
结论:
- 在现场,基于传感器的监测有效地评估室内和社区对城市空气污染物的暴露.
- 调查结果强调了需要加强建筑通风策略和优化学校空气吸入口的位置.
- 像空气过这样的干预措施显示出潜力,但需要进一步优化,以显著优于室外空气质量.
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