Heavy metals contamination in water and three species of most consumed fish sampled from Caspian Sea, 2011
- 373 Downloads
The present study is an attempt to evaluate the heavy metal contamination in the marine environment of the Caspian Sea of Iran. The concentrations of zinc, chromium, cadmium, and lead were measured in water and dorsal muscle of fish sampled from 10 selected stations along Gorgan coast using atomic absorption spectrophotometry during summer of 2011. The average concentrations of lead in water and fish samples (115.29 ± 14.78 and 113.23 ± 27.01 μg/L) were significantly higher than that of cadmium and chromium (P < 0.05). The highest heavy metals content was observed in Cyprinus carpio samples. The heavy metals concentrations in the samples were within the acceptable recommended standards. But, elevating levels of heavy metals in water and fish made a serious concern about ecosystem and food chain contamination. It is recommended that protective authorities should carry out a continual assessment on the levels of pollutants in the sea.
KeywordsHeavy metal Contamination Fish Water Caspian Sea
The valuable help of Research commission of Iran Organization of Environment in preparation of this manuscript is gratefully acknowledged.
- ASTM (1990). Guide for collection, storage, characterization and manipulation of sediments for toxicological testing: American Society for testing materials PH USAC, 1–971Google Scholar
- Biney, C. A. (1991). The distribution of terrace heavy metals in the kpong Headpond and lower Volta River Ghana. In N. K. K. Shastree (Ed.), Perspectives in aquatic entomology. Delhi: Marendre Publishing House.Google Scholar
- Saad, M. A. H., Amuzu, A. T., Biney, C., Calamar, D., Imerbore, A. M., & Naeve Ochumba, P. B. O. (1994). Domestic and industrial organic loads. In the review of pollution in the African aquatic environment. CIFA Technical, 25, 23–31.Google Scholar
- Tariq, J., Jafar, M., Ashraf, M., & Moazzam, M. (1993). Heavy metal concentrations in fish, shrimp, seaweed, sediment and water from the Arabian Sea, Pakistan. Marine Pollution Bulletin, 26, 644–647.Google Scholar
- WHO (1999). Food safety issues associated with products from aquaculture. Report of a Joint FAO/NACA/WHO Study Group. World Health Organization Technical Report Series 883, i-vii, 1–55Google Scholar