The presentation will present the results of a multi-season field evaluation of a low-cost optical particle counting sensor (Purple Air) that reports mass concentration of particulate matter with diameter less than 2.5 microns (PM2.5). We assessed over 12 months of Purple Air PM2.5 data collected in a rural setting in NE Oklahoma within the Quapaw Nation. The Purple Air sensor was collocated with a Federal Equivalent Method (FEM) Beta Attenuation Monitor (BAM model 1022) and a FEM Scattered Light Spectrometry Monitor (Teledyne model T640). The methodologies in our evaluation are broadly applicable to other field studies of low-cost monitors, and may suggest some suitability for use in air quality assessments in a rural setting.
