Journal Article•
Heavy metals concentration in oyster Crassostrea sp. HZ, sediment and sea water, Musa estuary
TL;DR: Safahieh et al. as mentioned in this paper investigated the concentration of Cd, Cu, Zn and Pb in recently reported oyster Crassostrea sp.HZ and its habitat in Musa estuary.
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. * Corresponding Author: A. Safahieh a.safahieh@kmsu.ac.ir
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Dissertation•
01 Jan 2018
TL;DR: In this paper, the spatial and temporal variation in surface water and sediment quality, parameters were evaluated from the three sites Chicalim Bay (CB), Nerul Creek (NC), and Chapora Bay (ChB) along the Goa coast, which has major oyster beds.
Abstract: To better understand the spatial and temporal variation in surface water and sediment quality, parameters were evaluated from the three sites Chicalim Bay (CB), Nerul Creek (NC), and Chapora Bay (ChB) along the Goa coast, which has major oyster beds. Multivariate analysis such as cluster analysis (CA), Box–Whisker plot (Box plot), and principle component analysis (PCA) revealed that nitrate (NO3–N), nitrite (NO2–N), phosphate (PO4–P), particulate organic carbon (POC), total suspended solids (TSS), dissolved oxygen (DO), and phaeopigments are the responsible parameters for spatio-temporal variability among the studied sites. Results showed an elevated level of ecotoxicological hazard at CB while moderate toxicological risks were observed for organisms at NC. In contrast, ChB was considerably pristine compared with other two sampling sites. Results of present study showed marked dominance of nutrients, phaeopigments, POC, and TSS at CB and NC. The increased levels of these parameters are attributed to the anthropogenic activities which may cause potential risk to humans via consumption of oysters. Therefore, we suggest monitoring heavy metal concentrations in tissue of commercially important oyster species, and their ambient environment (water and sediment) from these estuaries is necessary to create a comprehensive pollution database.
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Cites background from "Heavy metals concentration in oyste..."
...Biomonitoring studies conducted on other oyster species elsewhere also observed the high concentration of Cd in their tissue (Presley et al., 1990; De Mora et al., 2004; Apeti et al., 2009; Heidari et al., 2013; Sarmadian et al., 2014)....
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References
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896 citations
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