Personal exposure to benzene of selected population groups and impact of commuting modes in Ho Chi Minh, Vietnam

► Personal exposure to benzene in Ho Chi Minh was ∼18 μg/m3. ► Exposure during commuting was 22-39 μg/m3 for bus and taxi modes. ► Exposure during commuting was 185-240 μg/m3 for motorcycle mode. ► Benzene exposure during commuting time contributes main part of daily exposure. ► Motorcycle-taxi drivers, petrol-filling employees and street vendors are people of high exposure.