Assessment of ecological risk and identification sources of polycyclic aromatic hydrocarbons at coastal sediments: A case study in Bushehr Province, Iran

Publish Year: 1400
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:

JR_EHEM-8-4_002

تاریخ نمایه سازی: 28 آذر 1400

Abstract:

Background: Polycyclic aromatic hydrocarbons (PAHs) are stable and highly toxic environmental pollutants, which are produced mainly through combustion processes. The present study aimed to identify and determine PAHs compounds and their ecotoxicological effects in surface sediments of ۲۰ stations in Bushehr province (Assaluyeh, Kangan, Khark, Emam Hasan, and Bushehr areas). Methods: All sediment samples (۰-۵ cm) were collected from ۲۰ sites of Persian Gulf costs (Bushehr province, Iran). The concentration of PAHs was determined by HPLC. Then, in order to identify the sources of PAHs, ƩLPAHs/ƩHPAHs, IP/ (IP+BP), PH/AN, and AN/(PH+AN) ratios were obtained. Sediment quality guidelines (SQGs) and sediment quality criteria (SQC) were used to measure the PAHs ecotoxicological effects in sediments. Results: Based on PAHs isomeric ratios, the contaminants of sediments originated from pyrogenic resources. ƩPAHs values (ng/g dw) in sediment samples ranged from ND to ۴۹۱۸۰. The toxic equivalent concentration (TEQ car) of PAHs raged from ND-۷۹۹۹ ngTEQ/g. Based on SQGs and SQC, the concentrations of ƩPAHs compounds in ۱۰% and ۶% of the sampling stations exceeded effects range median (ERM) and frequent effect level (FEL), respectively, indicating negative ecological risk effects. Conclusion: Sampling stations sediments must be routinely checked for PAHs because may lead to a negative effect on the marine ecosystem, organisms, and humans.

Authors

Ghafour Nourian

Department of Environment, Bushehr Branch, Islamic Azad University, Bushehr, Iran

Neamat Jaafarzadeh Haghighi Fard

Corresponding author: Invited advisor, Department of Environment, Bushehr Branch, Islamic Azad University, Bushehr, Iran

Abdul Rahim Pazira

Department of Environment, Bushehr Branch, Islamic Azad University, Bushehr, Iran

Esmaeil Kohgardi

Department of Environment, Bushehr Branch, Islamic Azad University, Bushehr, Iran

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