Table 3.
Evaluation of mass concentrations reported by the sensors compared with the reference instrument for (A) PM1, (B) PM2.5, (C) PM4mc, and (D) PM10 for occupational concentrations. EPA and NIOSH acceptance criteria: slope = 1.0 ± 0.1; intercept = 0 ± 5 µg/m3 (EPA only); r ≥ 0.97; and bias percentage = ±10% (NIOSH only).
| Instruments | Data Pairs | Slope | Intercept | r | % Bias | % CV |
|---|---|---|---|---|---|---|
| (A) PM1 | ||||||
| Salt | ||||||
| OPC-N3 | 8 | 0.29 | 20.22 | 0.88 | −17.55 | 18.09 |
| SPS30 | 8 | 0.17 | −5.69 | 0.99 | 6.28 | 4.61 |
| AirBeam2 | 8 | 0.52 | −3.63 | 0.99 | −55.40 | 11.09 |
| PMS A003 | 8 | 0.74 | 2.07 | 0.99 | −16.40 | 9.96 |
| ARD | ||||||
| OPC-N3 | 8 | 0.46 | 10.62 | 0.94 | 22.26 | 40.62 |
| SPS30 | 8 | 1.32 | −1.40 | 0.99 | 32.26 | 18.40 |
| AirBeam2 | 8 | 0.27 | 0.37 | 0.99 | −74.71 | 12.46 |
| PMS A003 | 8 | 0.39 | 0.28 | 0.99 | −63.41 | 51.75 |
| PAO-4 Oil | ||||||
| OPC-N3 | 8 | 0.46 | 12.95 | 0.94 | 16.47 | 37.59 |
| SPS30 | 8 | 1.08 | −0.11 | 0.99 | 9.29 | 19.63 |
| AirBeam2 | 8 | 0.29 | 0.88 | 0.99 | −71.61 | 17.81 |
| PMS A003 | 8 | 0.42 | 7.22 | 0.96 | −50.71 | 78.72 |
| (B) PM2.5 | ||||||
| Salt | ||||||
| OPC-N3 | 8 | 0.34 | 10.21 | 0.97 | −52.89 | 20.64 |
| SPS30 | 8 | 1.34 | −11.49 | 0.99 | 13.74 | 6.77 |
| AirBeam2 | 8 | 0.15 | 2.29 | 0.99 | −53.67 | 6.48 |
| PMS A003 | 8 | 0.29 | −2.03 | 0.98 | 29.40 | 6.59 |
| ARD | ||||||
| OPC-N3 | 8 | 0.96 | 14.2 | 0.99 | 6.12 | 35.48 |
| SPS30 | 8 | 0.68 | −9.46 | 0.99 | −36.58 | 18.70 |
| AirBeam2 | 8 | 0.15 | 2.29 | 0.99 | −83.73 | 51.49 |
| PMS A003 | 8 | 0.29 | −2.03 | 0.98 | −74.26 | 47.74 |
| PAO-4 Oil | ||||||
| OPC-N3 | 8 | 0.74 | 2.72 | 0.99 | −24.57 | 44.71 |
| SPS30 | 8 | 0.59 | −11.68 | 0.99 | −48.41 | 19.68 |
| AirBeam2 | 8 | 0.11 | 2.53 | 0.99 | −87.32 | 10.69 |
| PMS A003 | 8 | 0.35 | 12.47 | 0.96 | −65.16 | 71.16 |
| (C) PM4mc | ||||||
| Salt | ||||||
| OPC-N3 | 8 | 0.46 | 9.60 | 0.97 | 38.95 | 20.93 |
| SPS30 | 8 | 1.89 | −10.21 | 0.99 | 63.81 | 7.68 |
| pDR-1500 | 8 | 4.47 | −3.11 | 0.99 | 419.79 | - |
| ARD | ||||||
| OPC-N3 | 8 | 1.03 | 9.05 | 0.99 | 7.44 | 33.44 |
| SPS30 | 8 | 0.61 | −18.24 | 0.99 | −45.16 | 19.23 |
| pDR-1500 | 8 | 1.00 | −28.27 | 0.99 | −8.52 | - |
| PAO-4 Oil | ||||||
| OPC-N3 | 8 | 1.05 | 1.23 | 1.00 | 6.10 | 44.11 |
| SPS30 | 8 | 0.83 | −19.19 | 0.99 | −29.14 | 19.70 |
| pDR-1500 | 8 | 1.71 | −32.83 | 0.99 | 52.08 | - |
| (D) PM10 | ||||||
| Salt | ||||||
| OPC-N3 | 8 | 1.38 | 4.79 | 0.99 | 63.34 | 117.93 |
| SPS30 | 8 | 1.48 | −9.76 | 0.99 | 28.24 | 6.85 |
| AirBeam2 | 8 | 1.15 | −23.22 | 0.99 | −15.12 | 5.79 |
| PMS A003 | 8 | 1.90 | −16.55 | 0.99 | 63.54 | 8.16 |
| ARD | ||||||
| OPC-N3 | 8 | 1.07 | 13.18 | 0.99 | 12.75 | 28.56 |
| SPS30 | 8 | 0.45 | −24.11 | 0.99 | −46.11 | 19.49 |
| AirBeam2 | 8 | 0.10 | −2.01 | 0.99 | −85.84 | 50.14 |
| PMS A003 | 8 | 0.27 | −1.09 | 0.98 | −63.85 | 40.53 |
| PAO-4 Oil | ||||||
| OPC-N3 | 8 | 0.84 | 6.84 | 0.99 | −12.00 | 42.35 |
| SPS30 | 8 | 0.59 | −20.62 | 0.99 | −49.83 | 19.09 |
| AirBeam2 | 8 | 0.23 | −8.62 | 0.99 | −71.26 | 11.95 |
| PMS A003 | 8 | 0.45 | 25.50 | 0.96 | −32.12 | 61.56 |