Table 3 Concentration and size of airborne particles released from ultrasonic humidifier for each type of water
From: Effect of aerosol particles generated by ultrasonic humidifiers on the lung in mouse
Used water | Mass concentration (mg/m 3) | Number concentration (#/cm 3) | Peak of size distribution (nm) |
|---|---|---|---|
Tap water | 0.46 ± 0.03 | (5.0 ± 1.1) × 104 | 183 ± 9 |
High-silica water | 0.58 ± 0.04 | (3.6 ± 0.0) × 104 | 180 ± 3 |
CaCl2 (400 mg/L Ca) | 1.66 ± 0.16 | (6.3 ± 0.5) × 104 | >410 |
CaCl2 (200 mg/L Ca) | 1.26 ± 0.19 | (4.2 ± 0.3) × 104 | 356 ± 11 |
CaCl2 (80 mg/L Ca) | 0.46 ± 0.11 | (5.0 ± 0.1) × 104 | 283 ± 9 |
CaCl2 (40 mg/L Ca) | 0.12 ± 0.03 | (4.5 ± 0.0) × 104 | 222 ± 4 |
CaCl2 (10 mg/L Ca) | 0.08 ± 0.01 | (3.4 ± 0.1) × 104 | 123 ± 4 |
CaCl2 (4 mg/L Ca) | 0.02 ± 0.01 | (2.7 ± 0.3) × 104 | 108 ± 2 |
RO water | <0.01 | (4.4 ± 0.6) × 104 | 90 ± 2 |
Ultrapure water | <0.01 | (0.7 ± 0.0) × 104 | Not determined |