Paper Details

Heavy metals concentration in oyster Crassostrea sp. HZ, sediment and sea water, Musa estuary

Sima Sarmadian1, Alireza Safahieh, Hossein Zolgharnein, Bita Archangi, Mahmood HashemiTabar

DOI: https://dx.doi.org/10.12692/ijb/4.2.198-204

Int. J. Biosci. 4(2), 198-204. January, 2014. (PDF)

Abstract:

Heavy metals are permanent pollutants that are able to accumulate in the tissues of marine organisms. Toxicity and bioaccumulation of heavy metals in aquatic organisms have been considered as a critical problem. New species oyster Crassostrea sp.HZ, that live near petrochemical complex in the Musa estuary, especially may be exposed to considerable amounts of heavy metals from surrounded environment. The primary goal of this study investigates the concentration of Cd, Cu, Zn and Pb in recently reported oyster Crassostrea sp.HZ and its habitat in Musa estuary. Oyster, sediment and sea water samples were obtained from six selected stations. The soft tissue of oysters was separated. All of the samples were acid digested and their heavy metals level were analyzed using atomic absorption spectrometer. The concentration of Cd, Cu, Zn and Pb in soft tissues ranged 12.21-17.5, 207.2-403.52, 90.43-104.12 and 0.07-0.95 (µg/g), respectively. The concentrations of the same metals in sediment were 0.15-0.85, 1.99-141.42, 60.42-122.1 and 2- 7.2 (µg/g) respectively. The concentrations of heavy metal in sea water was ND- 0.7, ND-3.1, 9.12- 23.03 and 0.15-2.27 (µg/g), respectively. The result showed that the level of heavy metals in soft tissue of C. sp.HZ was higher than general standard.