Occupational exposure and environmental benzene concentrations measured during workshifts of the study subjects
| Benzene (μg/m3, 7 h TWA) | Personal exposure of traffic police (n=139) | Personal exposure of office police (n=63) | Environmental concentrations2-150 |
| Mean (SD) | 9.3 (11.0) | 3.8 (1.5) | 13.1 (3.9) |
| G mean (SD) | 6.8 (2.0) | 3.5 (1.5) | 12.6 (1.3) |
| Range | 1.3–76.7 | 1.1–8.3 | 6.2–24.8 |
↵2-150 Mean of hourly averages measured at four urban monitoring stations for 60 days during 0700–1400.