“Exposure assessment of firefighters to smoke when fighting forest fires”
“forest fires, smoke, BTEX, risk perception"
“The smoke generated by forest fires is toxic, containing a large amount of chemical compounds that are harmful to our bodies and can cause acute and chronic effects. Exposure to these compounds can affect the entire community and especially professionals who are on the front lines fighting fires. The study was conducted with firefighters from the Military Fire Department of the Federal District (CBMDF) and forest firefighters from the Brasília Environmental Institute (IBRAM). The objectives were to evaluate the risk perception of this population regarding their occupational activities through a questionnaire, exposure to particulate matter of up to 4 µm (MP04) and up to 10 µm (MP10), using the NIOSH 0600 methods, gases from the BTEX group (benzene, toluene, ethylbenzene and xylene), using the NIOSH 1501 method, formaldehyde and acrolein by the NIOSH 2539 method, using GCMS/MS, polycyclic aromatic hydrocarbons (PAH) and benzene metabolite trans-transmuconic acid in urine. The results show that firefighters and firefighters are exposed to particulate matter MP04 and MP10, benzene and formaldehyde at levels above the occupational exposure limit (OEL) recommended by ACGIH (American Conference of Governmental Industrial Hygienists) in their occupational activities, since these professionals do not use respiratory protection equipment and are subject to long periods of exposure in the exercise of their activities. The levels of acrolein and PAH found are below the ACGIH OEL. Transtransmuconic acid was detected in the urine of firefighters and in some samples the concentrations after exposure to forest fires were higher than before exposure. The conclusion is that firefighters and firefighters in the Federal District are exposed to toxic compounds at levels above those permitted in their activities of fighting forest fires and using respiratory protection equipment and that these professionals are aware of the risk that this exposure can pose to their health"