Table 1.
AQY1 and reference monitor instrumentation, pollutant ranges, and lower detectable limits.
| AQY1 Units’ Instrumentation 1 | Range | Lower Detectable Limit |
|---|---|---|
| PM2.5 (Optical Particle Counter using Laser Scattering)—includes a pump for active sampling | 0–1000 µg/m3 | 1 µg/m3 |
| PM10 (Optical Particle Counter using Laser Scattering)—includes a pump for active sampling | 0–1000 µg/m3 | 1 µg/m3 |
| O3 (Gas Sensitive Semiconductor) | 0–200 ppb | 1 ppb |
| NO2 (NO2 is reported as the difference between the Ox and O3 sensors according to the equation [NO2] = [Ox] − 1.1 × [O3]. The Ox sensor is a Gas Sensitive Electrochemical sensor) |
0–500 ppb | 2 ppb |
| Reference Monitor Instrumentation | Range | Lower Detectable Limit |
| PM2.5 and PM10 (Beta Attenuation Mass Monitor 1020 2)—active sampling | 0–10,000 μg/m3 | Less than 1.0 μg/m3 |
| O3 (API Teledyne T400, UV Absorption O3 Analyzer 3)—active sampling | Min: 0–100 ppb full scale Max: 0–10,000 ppb full scale (selectable, dual-range supported) |
<0.4 ppb |
| NO2 (API Teledyne T200E 4 Chemiluminescence NO/NO2/NOx Analyzer)—active sampling | Min: 0–50 ppb full scale Max: 0–20,000 ppb full scale (selectable, dual-range supported) |
<0.2 ppb |
1 Information extracted from correspondence between the manufacturer and research team member JJ and confirmed via https://dozuki-prod-us-east-1-documents.s3.amazonaws.com/SPAHibXIfEj2AY4H.pdf#pdfjs.action=download (accessed on 29 November 2021); 2 https://metone.com/wp-content/uploads/2020/10/BAM-1020-N.pdf (accessed on 29 November 2021); 3 https://www.teledyne-api.com/products/oxygen-compound-instruments/t400 (accessed on 29 November 2021); 4 https://www.teledyne-api.com/products/nitrogen-compound-instruments/t200 (accessed on 29 January 2022).