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Validation of Low-Cost Sensors in Measuring Real-Time PM10 Concentrations at Two Sites in Delhi National Capital Region.


ABSTRACT: In the present study, we assessed for the first time the performance of our custom-designed low-cost Particulate Matter (PM) monitoring devices (Atmos) in measuring PM10 concentrations. We examined the ambient PM10 levels during an intense measurement campaign at two sites in the Delhi National Capital Region (NCR), India. In this study, we validated the un-calibrated Atmos for measuring ambient PM10 concentrations at highly polluted monitoring sites. PM10 concentration from Atmos, containing laser scattering-based Plantower PM sensor, was comparable with that measured from research-grade scanning mobility particle sizers (SMPS) in combination with optical particle sizers (OPS) and aerodynamic particle sizers (APS). The un-calibrated sensors often provided accurate PM10 measurements, particularly in capturing real-time hourly concentrations variations. Quantile-Quantile plots (QQ-plots) for data collected during the selected deployment period showed positively skewed PM10 datasets. Strong Spearman's rank-order correlations (rs = 0.64-0.83) between the studied instruments indicated the utility of low-cost Plantower PM sensors in measuring PM10 in the real-world context. Additionally, the heat map for weekly datasets demonstrated high R2 values, establishing the efficacy of PM sensor in PM10 measurement in highly polluted environmental conditions.

SUBMITTER: Sahu R 

PROVIDER: S-EPMC7085545 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature

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Validation of Low-Cost Sensors in Measuring Real-Time PM<sub>10</sub> Concentrations at Two Sites in Delhi National Capital Region.

Sahu Ravi R   Dixit Kuldeep Kumar KK   Mishra Suneeti S   Kumar Purushottam P   Shukla Ashutosh Kumar AK   Sutaria Ronak R   Tiwari Shashi S   Tripathi Sachchida Nand SN  

Sensors (Basel, Switzerland) 20200229 5


In the present study, we assessed for the first time the performance of our custom-designed low-cost Particulate Matter (PM) monitoring devices (Atmos) in measuring PM<sub>10</sub> concentrations. We examined the ambient PM<sub>10</sub> levels during an intense measurement campaign at two sites in the Delhi National Capital Region (NCR), India. In this study, we validated the un-calibrated Atmos for measuring ambient PM<sub>10</sub> concentrations at highly polluted monitoring sites. PM<sub>10</  ...[more]

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