Table 2.
Summary of the assessed IAQ parameters.
| Parameter (Unities) | Range | Guideline Value |
|---|---|---|
| CO (ppm) | From < DL (1) to 0.68 ppm | 7.03 ppm (5)/3.43 ppm (6) |
| CO2 (ppm) | From 526 ppm to 802 ppm | 700 ppm (7) |
| NO2 (ppm) | From 0.031 ppm to 0.059 ppm | 0.5 ppm (8) |
| VOCs (ppm) | From 0.17 ppm to 3.02 ppm | 1.32 ppm (9) |
| PM10 (mg/m3) | From < DL (2) mg/m3 to 0.005 mg/m3 | 0.05 mg/m3 (5)/0.045 mg/m3 (6) |
| PM2.5 (mg/m3) | From < DL (3) mg/m3 to 0.001 mg/m3 | 0.025 mg/m3 (5)/0.015 mg/m3 (6) |
| HCHO (mg/m3) | From < DL (4) mg/m3 to 1.35 mg/m3 | 0.37 mg/m3 (8) |
| Temperature (°C) | From 19.34 °C to 26.53 °C | From 17 °C to 27 °C (8) |
| Humidity (%) | From 41.69 % to 49.89 % | From 30 % to 70 % (8) |
DL= Detection limit. (1) DL= 0.2 ppm. (2) DL= 0.001 mg/m3. (3) DL= 0.0005 mg/m3. (4) DL= 0.01 ppm. (5) WHO guidelines 2010. (6) WHO guidelines 2021. (7) LIFTEC and CSIC, 2020. (8) INSHT, 2021. (9) German Supreme Health Authorities, 2012.