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Occupational exposure of firefighters in non-fire settings
Publication . Slezakova, Klara; Esteves, Filipa; Vaz, Josiana A.; Alves, Maria José; Madureira, Joana; Costa, Solange; Fernandes, Adília; Teixeira, João Paulo Fernandes; Morais, Simone; Pereira, Maria do Carmo
This work assessed firefighters’ exposure to particulate matter (PM) in non-fire work settings during pre-fire season, as a baseline for the respective occupational exposure characterization. Indoor and outdoor air sampling was conducted for two weeks in pre-fire season of 2021 in seven fire corporations (FC1-FC7) in north of Portugal. PM fractions (PM2.5, PM10) were continuously monitored concurrently in indoors (living rooms, rest areas, truck bays) and outdoors. The results showed low levels of pollution. Indoor PM10 was between 2 and 205 µg m–3 (mean 10 µg m–3); PM2.5 were 2—115 µg m–3 (8.5 µg m–3). Both indoor PM fractions were highly and significantly correlated (rs = 0.959–0.997). PM2.5 accounted for 85% of indoor PM; indoor to outdoor ratios (I/O) of PM2.5 ranged between 1.4 and 3.0, thus emphasizing the contribution of indoor emission sources for fine fraction. Outdoor PM10 were 2–6 times higher than indoors (6–894 µg m–3; mean 21 µg m–3); and 2–9 times higher for PM2.5 (5 – 169 µg m–3; 5 µg m–3).
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