Document Type : Research Paper
Authors
1
PhD. Candidate, Dept. of the Environment, College of Basic Sciences, Hamedan Branch, Islamic Azad University, Hamedan, Iran
2
Associate Professor, Dept. of the Environment, College of Basic Sciences, Hamedan Branch, Islamic Azad University, Hamedan
3
Associate Professor, Dept. of the Environment, College of Basic Sciences, Hamedan Branch, Islamic Azad University, Hamedan, Iran
4
Associate Professor, Dept. of the Environment, College of Basic Sciences, Hamedan Branch, Islamic Azad University, Hamedan, IranHamedan, Iran
5
Assistant Professor, Dept. of the Environment, College of Basic Sciences, Hamedan Branch, Islamic Azad University, Hamedan, Iran
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous pollutants with teratogenic, mutagenic and carcinogenic potential, which can pose potential risks to the environment and human health. Therefore, this study was conducted todetect and assess the potential ecological risk of PAHs in surface soils in the vicinity of Arad-Kouh Processing and Disposal Complex, Tehran, Iran, in 2020. In so doing, 30 surface soil samples were collected from 10 sampling sites adjacent to the Arad-Kouh complex. After extraction of analytes, the gas chromatography/mass spectrometry (GC–MS) method was used for determination of 16 PAHs in the samples. The results showed that the total concentrations of 16 PAHs (∑16PAHs) ranged from 863 to 1384 µg/kg with an average of 1123 µg/kg. Moreover, Chy and B(ghi)P showed no potential ecological risk, while other PAHs had a moderate potential ecological risk. Also, as computed values of RQ∑PAHs(MPCs for all the sampling sites were lower than 800, the total ecological risk of PAHs in surface soil samples of the study area was classified in the moderate-risk2 category. Based on the results, although the mean concentrations of B(a)A and B(ghi)p < /span> were higher than MPC established by Iranian Department of Environment, the mean concentrations of all of the 16 PAHs were lower than MPC established by MHWS. Overall, since PAHs have adverse effects on human health, detection and determination of concentration, source identification, and also periodical monitoring of these compounds in the environment is recommended in order to safeguard human health maintenance.
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