Health Exposure Assessment of Firefighters Caused by PAHs in PM4 and TSP after Firefighting Operations

Among the many different chemicals in the air, polycyclic aromatic hydrocarbons (PAHs) pose a serious threat to human health. Firefighters are exposed to them both during fire suppression and in fire vehicles and fire stations due to inhalation of the fumes from contaminated clothing and personal protective equipment. This study aimed to estimate the exposure and cancer risk caused by suspended particulate matter and PAHs present in these particles. Air samples were collected for 4 months in a garage of the fire station in a small town, located in an urban-rural area. PAH concentrations were measured using the gas chromatography method with mass spectrometry (GC/MS). The concentration of PM4 (particulate matter with a diameter below 4 mu m) and TSP (total suspended particulate) in the fire station garage was 7 and 9 times higher than outside, respectively. The calculated values of health hazard risks associated with the exposure to PAHs in PM4 and TSP are: a toxic equivalent (TEQ) up to 10.36 and 23.3, incremental lifetime cancer risk (ILCR) up to 3.45 and 4.65 and hazard quotient (HQ) up to 0.42 and 0.57, respectively. A significantly increased risk of cancers in the professional group of firefighters was found.