Table 2.9.
Lead content of particles in exhaust gas of automobile
| μm | Number | Number percentage (%) | Mass percentage (%) |
|---|---|---|---|
| 0–1 | 724 | 72.4 | 6.5 |
| 1–2 | 211 | 21.1 | 26.6 |
| 2–3 | 48 | 4.8 | 30.4 |
| 3–4 | 12 | 1.2 | 22.8 |
| 4–5 | 5 | 0.5 | 13.7 |
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