2017
No
https://www.tandfonline.com/doi/full/10.1080/15287394.2017.1286931
Slezakova, Klara
Europe
Opinion
Elementary (K-5)
Indoor concentrations at PS and ES were significantly different, with total
levels (ΣPAHs) 0.721–15.9 ng/m3 at PS1–PS2 and 5.03–23.6 ng/m3 at ES1–ES5. The corresponding outdoor concentrations were, respectively, 1.22–32.7 ng/m3 and 2.6–31.5 ng/m3. Polycyclic aromatic hydrocarbons with 2–3 aromatic rings were predominantly emitted by indoor sources, while compounds with 4–6 aromatic rings were mainly generated by infiltration of ambient PAH pollution to indoors. Excess lifetime risks of lung cancer exceeded the World Health Organization (WHO) designated guideline of 10–5 in both types of schools (15–42-fold at PS; 15–52-fold at ES). However, total (sum of indoor and outdoor exposure) incremental lifetime cancer risks (ILCR) were below the USEPA level of 10–6 at all studied institutions and thus considered negligible. Finally, ILCR due to
indoor exposure represented 60–75% and 70–85% of the total ILCR at PS and ES,
levels (ΣPAHs) 0.721–15.9 ng/m3 at PS1–PS2 and 5.03–23.6 ng/m3 at ES1–ES5. The corresponding outdoor concentrations were, respectively, 1.22–32.7 ng/m3 and 2.6–31.5 ng/m3. Polycyclic aromatic hydrocarbons with 2–3 aromatic rings were predominantly emitted by indoor sources, while compounds with 4–6 aromatic rings were mainly generated by infiltration of ambient PAH pollution to indoors. Excess lifetime risks of lung cancer exceeded the World Health Organization (WHO) designated guideline of 10–5 in both types of schools (15–42-fold at PS; 15–52-fold at ES). However, total (sum of indoor and outdoor exposure) incremental lifetime cancer risks (ILCR) were below the USEPA level of 10–6 at all studied institutions and thus considered negligible. Finally, ILCR due to
indoor exposure represented 60–75% and 70–85% of the total ILCR at PS and ES,