An In-Field Assessment of the P.ALP Device in Four Different Real Working Conditions: A Performance Evaluation in...

Area of Science:

• Environmental Science
• Air Quality Monitoring
• Sensor Technology

Background:

• Particulate matter (PM2.5) poses significant health risks.
• Low-cost sensors offer potential for widespread air quality monitoring.
• Assessing the performance of new monitoring devices is crucial.

Purpose of the Study:

• To evaluate the precision and accuracy of the P.ALP prototype for PM2.5 monitoring.
• To assess the P.ALP's performance across diverse microenvironments.
• To determine the suitability of the P.ALP for real-world air quality assessments.

Main Methods:

• Co-location of four P.ALP prototypes with reference instrumentation.
• Data collection over 20 days in office, home, outdoor, and occupational settings.
• Statistical analysis including linear regression and Bland-Altman plots, applying US EPA criteria.

Main Results:

• P.ALP performance varied significantly with microenvironment and PM2.5 concentration.
• Acceptable monitoring of PM2.5 variations was observed, but not at extreme low or high concentrations.
• The device showed potential for customization but requires application-specific calibration factors.

Conclusions:

• The P.ALP prototype demonstrates potential for PM2.5 monitoring but requires careful calibration.
• Environmental conditions and PM2.5 levels impact sensor accuracy.
• Further development and calibration are necessary for reliable field deployment.