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Assessment and Measurement of Lead and Nickel Heavy Metal Pollution in the Coastal Sediments of Bandar Abbas
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Maryam Rezaei   , Naser Koosej |
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Abstract: (309 Views) |
Introduction: Heavy metals, comprising both essential and non-essential elements, are of significant concern in ecotoxicology due to their high persistence and potential toxicity to living organisms. This study aims to measure the concentrations of lead (Pb) and nickel (Ni) in the sediments of three coastal areas South Golshahr, PoshtShahr, and South Naiband located in the Persian Gulf.
Materials & Methods: The study was conducted during the summer and winter of 2025. A total of 30 sediment samples were collected across the three study sites. The concentrations of Pb and Ni were determined using a High-Resolution Continuum Source Atomic Absorption Spectrometer (Model: Contr AA 700).
Results: The findings revealed that the mean concentrations of the studied elements in the PoshtShahr area were significantly higher than those in South Naiband and South Golshahr. This elevated concentration is attributed to intensive fishing activities, direct petroleum waste leakage, and low water currents within the jetty boundaries. Furthermore, seasonal analysis indicated that Pb and Ni levels were significantly higher in summer compared to winter. This phenomenon stems from increased evaporation rates, reduced dilution effects from rainfall, and intensified maintenance and refueling activities during the warm season. Although current concentrations remain below international standards and global sediment reference values, the hydrodynamic characteristics of the region play a crucial role in controlling these pollutants.
Conclusion: Statistical analysis confirmed a significant seasonal difference in the mean concentrations of Pb and Ni (p<0.05), with higher levels recorded during the summer across all sites. The primary drivers for this trend include high seawater evaporation rates and increased maritime operational activities. While sediment metal levels are currently lower than global averages, integrated urban wastewater management and rigorous monitoring of maritime activities are essential to prevent critical accumulation in the future. |
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| Keywords: Lead, Nickel, Marine Sediments, Persian Gulf |
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Full-Text [PDF 866 kb]
(106 Downloads)
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Type of Study: Research |
Subject:
Special
Received: 2026/06/5 | Accepted: 2026/05/31 | Published: 2026/09/7
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