Open Access
Table 1
Nigerian air quality standards.
| Pollutants | Time of average | Limit | Health effect when exposed beyond limit |
|---|---|---|---|
| Particulates | Daily average of daily values for 1 hour. | 250 μg/m3
600 μg/m3 |
Breathing/respiratory problems |
| Sulphur oxides (Sulphur dioxide) | Daily average of hourly values 1 hour | 0.01 ppm (26 μg/m3) 0.1 ppm (26 μg/m3 |
Skin and lung disease |
| Carbon monoxide | Daily average of hourly values 8-hourly average | 10 ppm (11.4 μg/m3) 20 ppm (22.8 μg/m3) |
Headache, dizziness, weakness, nausea, vomiting |
| Nitrogen oxides (Nitrogen dioxide) | Daily average of hourly values (range) | 0.04 ppm–0.06 ppm (75.0 μg/m3-113 μg/m3) |
Coughing, wheezing, eye irritation, nose and throat irritation |
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