Research Article
Assessment of Population Exposure to Coarse and Fine Particulate Matter in the Urban Areas of Chennai, India
Table 1
WHO IT guidelines for coarse and fine PM.
| | 24-h mean level | PM10 (µg/m3) | PM2.5 (µg/m3) | Basis for the selected level |
| | IT-1 | 150 | 75 | About 5% increase of short-term mortality over AQG | | IT-2 | 100 | 50 | About 2.5% increase of short-term mortality over AQG | | IT-3 | 75 | 37.5 | About 1.2% increase in short-term mortality over AQG | | AQG | 50 | 25 | Based on relation between 24-hour and annual PM levels |
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