在学校和儿童保育机构使用低成本传感器评估野火烟雾暴露的实用考虑
Orly Stampfer1, Christopher Zuidema2, Ryan W Allen3
1University of Washington Department of Environmental and Occupational Health Sciences, 4225 Roosevelt Way NE, Seattle, WA, 98105, USA. ostamp@uw.edu.
概括
野火烟雾对儿童构成风险. 低成本的传感器可以通过提供实时室内空气质量数据来帮助学校管理细颗粒物 (PM2.5) 暴露,从而更好地做出决策.
科学领域:
- 环境健康 环境健康
- 空气质量监测 空气质量监测
- 公共卫生 公共卫生
背景情况:
- 越来越多的野火频率和强度增加了学校和儿童保育场所的细颗粒物 (PM2.5) 度.
- 低成本的传感器为室内PM2.5水平的详细空间和时间评估提供了一种可行的方法.
研究的目的:
- 优化低成本传感器的使用,以便在野火烟雾事件期间在教育设施中进行知情决策.
- 为了尽量减少儿童接触有害的PM2.5度.
主要方法:
- 华盛顿州四所学校的室内和室外PM2.5度在野火烟雾事件 (2020-2021) 中使用低成本传感器和重力测量样本测量.
- 通过随机抽取5分钟的传感器数据段来创建简短,便携式手持测量的模拟.
主要成果:
- 在学校时间内,在设施内观察到室内PM2.5 (高达49.6μg/m3) 的显著变化.
- 室内/室外PM2.5比率的中位数从0.22到0.91不等,这凸显了综合室内监测的重要性.
- 高时间分辨率数据 (10分钟间隔) 显示出与随后的室内PM2.5有很强的相关性 (R2=0.94),比较长的间隔更有助于立即决策.
结论:
- 有效地管理野火烟雾需要在整个学校设施进行测量,因为度的变化.
- 使用低成本传感器进行频繁,多天的手持测量可以提高室内/室外比率估计的准确性.
- 高分辨率传感器数据对于在野火烟雾事件期间及时做出有关室内活动和空气质量管理的决定至关重要.
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