- • Interior bus air chemistry can be influenced both by route taken and bus model.
- • Carbon and most metal concentrations are much higher in buses than urban background.
- • Enhanced levels of Cu and Sb are attributed to brake particles entering the bus.
- • Inhalable PM are mostly textile fibres, skin flakes, vehicle exhaust and brake wear.
- • New buses show much higher VOC signature due to off-gassing of interior materials.