Simulated dermal and inhalation exposure scenarios compared with measured BaP inhalation exposure scenario (air concentrations and time-of-shifts) in workers exposed to PAHs in a carbon disk brake production plant (observed data from [3]).

aWorker 7 wore a paper mask; worker 6, 7 and 9 did not wear any respiratory protection equipment; worker 10 wore a cartridge mask.
bWorker 6 not presented in Figure 4.

a) 7号作业人员佩戴了纸质口罩；6号、7号与9号作业人员未佩戴任何呼吸防护装备（respiratory protection equipment）；10号作业人员佩戴了滤盒式口罩（cartridge mask）。
b) 6号作业人员未出现在图4中。