Geochemical and geo-statistical assessment of selected heavy metals in the surface sediments of the Gorgan Bay,Iran |
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| Institution: | 1. Department of Basic Sciences, Faculty of Veterinary Medicine, Science and Research Branch, Islamic Azad university, Tehran, Iran;2. Department of Basic Sciences, Faculty of Veterinary Medicine, University of Tehran, Iran;3. Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran;1. Iranian National Institute for Oceanography and Atmospheric Science (INIOAS), No. 3, Etemadzadeh St., Fatemi Ave., 1411813389 Tehran, Islamic Republic of Iran;2. Department of Chemistry, Faculty of Science, University of Zanjan, Postal Code 45371-38791 Zanjan, Iran;3. Department of Marine Science and Technology, Science and Research Branch, Islamic Azad University, Tehran, Iran;4. Department of Fisheries, Faculty of Animal Science and Fisheries, Sari Agricultural Sciences and Natural Resources University, Km 9 Darya Boulevard, P.O. Box, 578, Sari, Iran;5. Novin Shimyar Chemical Laboratory, P.O. Box 14589-3699, Tehran, Iran;6. Agricultural Planning, Economic and Rural Development Research Institute, Tehran, Iran;1. Department of Animal Biology, Faculty of Biological Science, Kharazmi University, Tehran, Iran;2. Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran;3. Neurophysiology Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran;4. Department of Physiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran;5. Neuroscience Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran |
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| Abstract: | We investigated heavy metal concentrations of zinc (Zn), copper (Cu), chromium (Cr), and lead (Pb), their spatial distribution and enrichment factor index in surface sediments of the Gorgan Bay. Sediment Quality Guidelines were also applied to assess adverse biological effects of these metals. Heavy metals were determined by inductively coupled plasma-mass spectroscopy (ICP-MS). The results indicated mean concentrations (ppm) of heavy metals were (mean ± S.D.) Pb: 11.5 ± 4.88, Cu: 18 ± 8.83, Zn: 42 ± 22.15 and Cr: 32 ± 15.19. Based on Enrichment index, the Gorgan Bay is a low-enriched to non-enriched bay. Heavy metal contents were lower than the standard limits of PEL, ERL, and ERM that reveal no threatening influence of the metals in the Bay. |
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