Table 1.
Comparison between average values of mean levels of air pollutants emitted from burning new moxa wools and alternate old moxa wools.
| Pollutant | Stage | Moxa Wools | Percentage Change a | |
|---|---|---|---|---|
| Fresh | Alternative Old One | |||
| CO2 | Background level | 542 ppm | 560 ppm | ↑41% |
| Moxibustion level | 569 ppm | 598 ppm | ||
| Increase level | 27 ppm | 38 ppm | ||
| CO | Background level | <0.1 ppm | <0.1 ppm | ↓57% |
| Moxibustion level | 2.8 ppm | 1.4 ppm | ||
| Increase level | 2.8 ppm | 1.2 ppm | ||
| HCHO | Background level | 0.025 ppm | 0.022 ppm | ↓75% |
| Moxibustion level | 0.049 ppm | 0.028 ppm | ||
| Increase level | 0.024 ppm | 0.006 ppm | ||
| TVOC | Background level | 0.03 ppm | 0.03 ppm | ↓83% |
| Moxibustion level | 0.27 ppm | 0.07 ppm | ||
| Increase level | 0.24 ppm | 0.04 ppm | ||
| PM2.5 | Background level | 26 μg/m3 | 24 μg/m3 | ↑75% |
| Moxibustion level | 296 μg/m3 | 497 μg/m3 | ||
| Increase level | 270 μg/m3 | 473 μg/m3 | ||
| PM10 | Background level | 147 μg/m3 | 198 μg/m3 | ↑94% |
| Moxibustion level | 409 μg/m3 | 707 μg/m3 | ||
| Increase level | 262 μg/m3 | 509 μg/m3 | ||
a Percentage change = (Increased mean level of test for moxibustion with old moxa wools—increased mean level of test for moxibustion with new moxa wools)/increase level of test for new moxa wools × 100%.