ORIGINAL RESEARCH
Polycyclic Aromatic Hydrocarbons in Soils
in Industrial Areas: Concentration and Risks
to Human Health
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1
Pan-European University “Apeiron”, Pere Krece 13, Banja Luka, Republic of Srpska, Bosnia & Hercegovina
2
PSRI Institute for Protection and Ecology of the Republic of Srpska, Vidovdanska 43,
Banja Luka, Republic of Srpska, Bosnia and Herzegovina
3
Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad-38040, Pakistan
Submission date: 2021-02-16
Final revision date: 2021-05-13
Acceptance date: 2021-05-19
Online publication date: 2021-11-24
Publication date: 2022-01-28
Corresponding author
Predrag Ilić
PSRI Institute for Protection and Ecology of the Republic of Srpska, Banja Luka, Vidovdanska 43, 78000, Banja Luka, Bosnia and Herzegovina
Pol. J. Environ. Stud. 2022;31(1):595-608
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ABSTRACT
Soil samples were collected in an industrial area (Banja Luka, Bosnia and Herzegovina) and
analyzed the concentration of 16 polycyclic aromatic hydrocarbons (PAHs). The total concentration of
16 PAHs in surface soil varied within the range of 0.599-2.848 mg/kg and in deeper layer soil samples
0.041-0.320 mg/kg. Two basic sources of PAHs at this location are: pyrogenic and petrogenic sources.
Benzo(a)pyrene toxic equivalency factors (TEFs) were used to calculate BaPeq in order to evaluate
carcinogenic risk of soil contamination with PAHs. The total BaPeq of seven carcinogenic PAHs in
surface soil and deeper soil layer were in the range 23.270-368.63 μg/kg (mean of 151.223 μg/kg), and
15.71-80.24 μg/kg, (mean of 48.08 μg/kg), respectively. These indicated that PAHs in this industrial soil
presented relatively high toxicity potential. This study identifies the concentration and estimation of the
potential cancer risk caused by contact with soils for adults, adolescents and children. In accordance
with the estimated values of incremental life cancer risks (ILCRs), the cancer risk resulting from contact
with the contaminated surface soil should be considered high (total ILCR>10-3). The results suggest that
current PAHs concentration highly carcinogenic and may hold a serious health risk for local residents
and employees.