Naslov
CARCINOGENIC ORGANIC CONTENT OF PARTICULATE MATTER AT URBAN LOCATIONS WITH DIFFERENT POLLUTION SOURCES

Autori
Pehnec, Gordana ; Jakovljević, Ivana ; Godec, Ranka ; Žero, Sabina ; Huremović, Jana ; Džepina, Katja

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, ostalo

Izvornik
18th World Clean Air Congress 2019 / Incecik, Selahattin ; Toros, Huseyin ; Topcu, Sema ; Ozturk, Busra ; Duzgun, Cansu ; Kursun, Ilayda - Istanbul : TUNCAP and IUAPPA, 2019, 10-10

Skup
18th World Clean Air Congress (WCAC 2019)

Mjesto i datum
Istanbul, Turska, 23.09.2019. - 27.09.2019

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
benzo(a)pyrene ; PM10 ; polycyclic aromatic hydrocarbons ; total carcinogenic potency

Sažetak
Chemical composition of airborne particulate matter is of considerable importance regarding public health. Polycyclic aromatic hydrocarbons (PAH) are compounds known for their adverse effects on human health. Many of them are proven carcinogens, especially those with 5 and 6 aromatic rings which in ambient air are usually bounded to particulate matter. Benzo(a)pyrene (BaP) is often measured as their representative. Sarajevo (~450 000 inhabitants), the capital of Bosnia and Herzegovina, is one of the European cities with the poorest air quality. As a consequence of topography, meteorological conditions and extensive use of fossil fuels, daily PM10 mass concentrations during winter exceed 400 µg/m3. Measurements of PAH are not part of routine monitoring and only limited data are available from previous studies. The capital of Croatia, Zagreb (~800 000 inhabitants), is located approximately 300 km north-west from Sarajevo. PAH mass concentrations in Zagreb have been measured continuously since 1994 within local and national air quality monitoring networks. During winter 2017/2018, the SAFICA project (Sarajevo Canton Winter Field Campaign 2018) was carried out in order to characterise the organic and inorganic pollutants in the city of Sarajevo and its surroundings. This paper presents results of PAH measurements at one urban location in Sarajevo. 24-hour samples of PM10 particle fraction were collected during heating season, from 10 December 2017 to 26 February 2018. The analysis of PAH was performed using high performance liquid chromatography with a fluorescence detector. PAH mass concentrations in Sarajevo were compared with the results obtained in Zagreb during the same period. Average BaP concentrations in Sarajevo and Zagreb were 6.925 ng/m3 and 3.109 ng/m3, respectively. The contribution of BaP to the sum of PAH mass concentrations was similar at both locations (~ 11 %). However, much higher contributions of fluoranthene and pyrene were obtained in Sarajevo. Contributions of individual PAH and their diagnostic ratios indicated combustion of gasoline and diesel as a potential source of PAH (traffic) at both locations, as well as combustion of other liquid fossil fuels (petroleum, crude oil). Wood burning was occasionally indicated as a source in Zagreb, while in Sarajevo the contribution of coal combustion was evident. The total carcinogenic potency of PAH was estimated by calculating BaP equivalent concentrations using toxic equivalence factors from the literature and it was 10.052 ng/m3 and 4.506 ng/m3 in Sarajevo and Zagreb, respectively. BaP had the highest contribution to the total carcinogenic potency at both locations (69 and 67 %), followed by benzo(b)fluoranthene, dibenzo(a, h)anthracene and indeno(1, 2, 3-cd)pyrene.

Izvorni jezik
Engleski

Znanstvena područja
Javno zdravstvo i zdravstvena zaštita

POVEZANOST RADA