Polychlorinated biphenyls hot and cold seasons distribution in see water,sediment, and fish samples in the Khour-e-Mousa (Mah-Shahr), Iran |
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Authors: | Jalal Hassan Parisa NejatKhah Manavi Elmira Darabi |
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Affiliation: | 1. Department of Toxicology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran;2. Department of Marine Biology, Faculty of Marine Science and Technology, Islamic Azad University, North Tehran Branch, Tehran, Iran |
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Abstract: | The concentrations of polychlorinated biphenyls (PCBs) were assessed at four sites in Khour-e-Mousa (Mah-Shahr), Iran. Sea water, sediment and fish (cynoglossus bilineatus) samples were taken at each site and were analysed for PCB levels. To investigate the possible source of PCBs found in fish samples, sediments and waters were collected from four sites (D1, D2, D3, and D4) and studied. The relationship between PCB concentrations in sediment, water and fish is discussed. The results indicate that PCBs are detected in all fish samples and its concentration range from 3.2 to 102.7 μg kg?1 dry weight and 5.4–149.7 μg kg?1 dry weight in cold and warm seasons, respectively. The D2 and D4 sites were found to have the highest and lowest levels of PCB concentrations, respectively. Total congener PCB (CB, 28, 52, 44, 101, 149, 118, 153, 138, and 180) concentrations at the sediment samples for D1, D2, D3, and D4 sites ranged from 1.6 to 30.9 μg kg?1 dry weight and 2.3–47.1 μg kg?1 dry weight in cold and warm seasons, respectively. The total PCB concentrations for D2 site were found to be significantly higher than other three sites. Total water congener PCB (CB, 28, 52, 44, 101, 149, 118, 153, 138, and 180) concentrations ranged from 0.01 to 0.25 μg L?1 and 0.02–0.39 μg L?1 in cold and warm seasons, respectively. |
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