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Can I read Indoor-Generated PM~2.5~ During COVID-19 Shutdowns Across California: Application of the PurpleAir Indoor–Outdoor Low-Cost Sensor Network on EtoBox?
Indoor-Generated PM~2.5~ During COVID-19 Shutdowns Across California: Application of the PurpleAir Indoor–Outdoor Low-Cost Sensor Network by Amirhosein Mousavi; Jun Wu is a Environmental Science article available to read on EtoBox.
What is Indoor-Generated PM~2.5~ During COVID-19 Shutdowns Across California: Application of the PurpleAir Indoor–Outdoor Low-Cost Sensor Network about?
Although evidences showed an overall reduction in outdoor air pollution levels across the globe due to COVID-19related lockdown, no comprehensive assessment was available for indoor air quality during the period of stay-at-home orders, despite that the residential indoor environment contributes most to personal exposures. We examined temporal and diurnal variations of indoor PM 2.5 based on real-time measurements from 139 indoor-outdoor co-located low-cost PurpleAir sensor sets across California for pre-, during, and post-lockdown periods in 2020 and "business-as-usual" periods in 2019. A two-step method was implemented to systematically control the quality of raw sensor data and calibrate the sensor data against co-located reference instruments. During the lockdown period, 17-24% higher indoor PM 2.5 concentrations were observed in comparison to those in the 2019 business-as-usual period. In residential sites, a clear peak in PM 2.5 concentrations in the afternoon and elevated evening levels toping at roughly 10 μg•m -3 was observed, which reflects enhanced human activity during lunch and dinner time (i.e., cooking) and possibly more cleaning and indoor movement that increase part
Who reads Indoor-Generated PM~2.5~ During COVID-19 Shutdowns Across California: Application of the PurpleAir Indoor–Outdoor Low-Cost Sensor Network?
It is typically read by researchers, students, and practitioners in Environmental Science.
- Author
- Amirhosein Mousavi; Jun Wu
- Publisher
- American Chemical Society (ACS)
- Published
- 2021
- Language
- EN
- Field
- Environmental Science (Physical Sciences)