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DOI: 10.5593/SGEM2016/HB14/S01.007

ASSESSMENT OF CARCINOGENIC RISK FROM SOIL POLLUTION BASED ON POLICYCLYC AROMATIC HYDROCARBONS

M. A. Stoian, D. M. Cocarta, A. Badea
Friday 11 November 2016

References: 16th International Multidisciplinary Scientific GeoConference SGEM 2016, SGEM Vienna GREEN Extended Scientific Sessions, www.sgemviennagreen.org, SGEM2016 Conference Proceedings, ISBN 978-619-7105-80-3 / ISSN 1314-2704, 2 - 5 November, 2016, Book 1 Vol. 4, 49-56pp, DOI: 10.5593/SGEM2016/HB14/S01.007

ABSTRACT

At global level, there are numerous events that generate soil contamination with different petroleum products. The causes of this kind of contamination are numerous and can occur since oil extraction, to transportation or use of products obtained from processing crude oil. Soil contamination with petroleum products requires investigation with regard to multiple types of contaminants such as those known to have important negative influence on human health (PCBs, PAHs, heavy metals and others). The present work is focused on oil polluted soils; particularly, it was realized the assessment of soil contamination level with Polycyclic Aromatic Hydrocarbons (PAHs) and effects on human health (carcinogenic risk). Soil samples were collected from a bioremediation platform where contaminated soil from oil drilling and production activities was deposited. The concentrations of PAHs were measured. Chemical analysis showed a concentration of total PAHs in the soil sample representative for the entire field equal with 26 mg/kgs.u.. The identified concentration was over the threshold established by the national regulation (less sensitive use – alert level). As consequence, the carcinogenic risk for humans was assessed. The obtained results revealed that exposure to soil pollution with PAHs induce a carcinogenic risk of 2.09 x 10-3. This value is with three order of magnitude higher that the acceptable risk suggested by World Health Organization (10-6). In this way, it was evaluated how human exposure to environmental carcinogenic polycyclic aromatic hydrocarbons from soil contaminated with oil could have a negative influence on human health even if PAHs concentration in soil was not so higher. Therefore, the contaminated soil was proposed for remediation.

Keywords: risk assessment, soil pollution, oil pollution, polycyclic aromatic hydrocarbons

PAPER DOI: 10.5593/SGEM2016/HB14/S01.007, ASSESSMENT OF CARCINOGENIC RISK FROM SOIL POLLUTION BASED ON POLICYCLYC AROMATIC HYDROCARBONS

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