Research Article
Dust Particle Size Distributions during Spring in Yinchuan, China
Table 3
PM1, PM2.5, and PM10 dust particles mass concentrations and mass concentration percentages to total mass under different meteorological conditions.
| | Weather type | The maximum wind speed (m/s) | The mass concentration (mg/m3) | The average mass concentration
(mg/m3) | Ratios of the mass concentration
to total concentration (%) | | PM1 | PM2.5 | PM10 | PM1 | PM2.5 | PM10 |
| | Background | 3.3 | 1.1 | 0.15 | 0.5 | 1.08 | 13.6 | 45.5 | 98.2 | | Floating dust | 6.1 | 10.6 | 0.42 | 4.6 | 10.1 | 3.9 | 43.4 | 95.3 | | Blowing sand | 10.8 | 18.4 | 0.59 | 7.83 | 17.2 | 3.2 | 42.6 | 93.5 | | Dust storm | 13.1 | 44.3 | 0.61 | 13.2 | 40.3 | 1.4 | 29.8 | 90.9 |
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