Arı, Akif2021-06-232021-06-2320201309-1042https://doi.org/10.1016/j.apr.2019.10.013https://hdl.handle.net/20.500.12491/10597In this study, a general evaluation of indoor air quality (IAQ) in an office room with intense printing activity was investigated. Instantaneous peaks of PM2.5 and O-3 were observed when the printer was working, and the concentrations were decreased significantly on idle times. Size distribution of PM showed a remarkable contribution of quasi-ultrafine mode particles to the total aerosol mass. Polycyclic aromatic hydrocarbons (PAHs) and elemental carbon (EC) occupied an insignificant percent of the aerosol mass, while organic carbon (OC) together with elements were noted to be significant. Carcinogenic and non-carcinogenic health risks due to the PM exposure were evaluated by using size-dependent deposition fractions in the respiratory tract. Hazard index (HI) was calculated as 5.5 x 10(-5) for the PAHs and 2.2 x 10(-1) for heavy metal exposure as the sum of inhalation, ingestion and dermal exposures. Cancer risk (CR) values were obtained to be 6.3 x 10(-7) and 6.4 x 10(-6) for the inhalation of PAHs and heavy metals, respectively. As a result of the higher concentration of the VOCs, total CR higher than 1.3 x 10(-5) was estimated, while total hazard quotient (HQ) value was noticed to be 9.9 x 10(-2) in the office.eninfo:eu-repo/semantics/closedAccessPrinter EmissionsHealth Risk AssessmentPM Size DistributionIndoor Air QualityLung DepositionArticle10.1016/j.apr.2019.10.0131122692822-s2.0-85074427839Q1385174WOS:000507504300005Q2