Journal of Wetland Ecobiology
Volume 16, Issue 2 (Summer 2024)
2024, 16(2): 46-55 |
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Tayebi M, Mohammadi Rouzbahani M, Cheraghi M, Dashti S, Behbash R. Investigation of the accumulation of heavy metals and polycyclic aromatic hydrocarbons in tissues of the Cerylerudis as an indicator of environmental pollution in the operational area ofAghajari Oil and Gas Exploitation Company. Wetland Ecobiology 2024; 16 (2) : 5
URL: http://jweb.ahvaz.iau.ir/article-1-1124-en.html
URL: http://jweb.ahvaz.iau.ir/article-1-1124-en.html
Department of Environment, Ahv.C., Islamic Azad University, Ahvaz, Iran & Department of Environment, Ahv.C., Islamic Azad University, Ahvaz, Iran
Abstract: (236 Views)
Oil-related processes, from extraction to consumption, are inevitably associated with the release of environmental pollutants, including heavy metals and polycyclic aromatic hydrocarbons (PAHs). This study aimed to investigate the accumulation of heavy metals and PAHs in the liver, kidney, tail feathers, and gizzard of Ceryle rudis as an indicator aquatic bird in the operational area of Aghajari Oil and Gas Company in 2023. Heavy metal concentrations were measured using a PerkinElmer NexION 300X induction plasma device, and polycyclic aromatic compounds were measured using an Agilent 7890A/5975C gas chromatography-mass spectrometry (GC-MS) device. The results indicated that the highest concentrations of Cd, Pb, Ni, Cr, and Hg were detected in the liver, with values of 0.61±0.05, 2.06±0.12, 2.28±0.18, 3.10±0.25 and 0.24±0.02 mg kg-1 dry weight, respectively. The kidney was the second organ with significant accumulation, whereas the levels in the gizzard were negligible and below the detection limit. In contrast, lead accumulation was highest in the tail feathers (52.10±1.50 mg kg-1), indicating the role of feathers in excreting certain pollutants. The analysis of PAHs revealed that the liver and kidney contained the highest concentrations, with total PAH levels of 42.5 and 21 ng g-1 dry weight, respectively. Tail feathers and gizzard contained minimal amounts. High molecular weight PAHs, including benzo[a]pyrene (15.6± 0.9 ng g-1), benzo[a]fluoranthene (13.2±0.8 ng g-1), chrysene (14.7±0.9 ng g-1), and dibenzo[a,h]anthracene (18.4±1.0 ng g-1), exhibited the greatest accumulation in the liver and kidney, whereas low molecular weight PAHs such as naphthalene (5.2±0.3 ng g-1), acenaphthylene (3.8±0.2 ng g-1), and acenaphthene (4.1±0.3 ng/g) were detected at lower levels. These findings highlight the potential of Ceryle rudis as a bioindicator for monitoring environmental contamination by heavy metals and PAHs in oil-producing regions. The findings of this study indicate that the eelpout can be used as an effective bioindicator for heavy metals and aromatic compounds in aquatic environments.
Article number: 5
Keywords: Heavy metals, polycyclic aromatic hydrocarbons (PAHs), Ceryle rudis, Bioindicator, Environmental pollution.
Type of Study: Research |
Subject:
Special
Received: 2026/01/1 | Accepted: 2026/01/16 | Published: 2026/01/16
Received: 2026/01/1 | Accepted: 2026/01/16 | Published: 2026/01/16
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