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Washington University in St. Louis

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Recent Advances In Low-Cost Particulate Matter Sensor: Calibration And Application, Jiayu Li May 2019

Recent Advances In Low-Cost Particulate Matter Sensor: Calibration And Application, Jiayu Li

McKelvey School of Engineering Theses & Dissertations

Particulate matter (PM) has been monitored routinely due to its negative effects on human health and atmospheric visibility. Standard gravimetric measurements and current commercial instruments for field measurements are still expensive and laborious. The high cost of conventional instruments typically limits the number of monitoring sites, which in turn undermines the accuracy of real-time mapping of sources and hotspots of air pollutants with insufficient spatial resolution. The new trends of PM concentration measurement are personalized portable devices for individual customers and networking of large quantity sensors to meet the demand of Big Data. Therefore, low-cost PM sensors have been studied …