Heavy metal depuration in flat tree oysters Isognomon alatus under field and laboratory conditions

Saed, Katayon and Ismail, Ahmad and Omar, Hishamuddin and Kusnan, Misri (2004) Heavy metal depuration in flat tree oysters Isognomon alatus under field and laboratory conditions. Toxicological & Environmental Chemistry, 86 (3). pp. 171-177. ISSN 0277-2248

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Official URL: http://dx.doi.org/10.1080/02772240400007039


Oysters Isognomon alatus containing high concentrations of Zn, Cu, Pb and Cd were collected from the Sepang Besar River, and transferred to the Sepang Kecil River where the native oysters contain low metal concentrations. Concentrations of heavy metals in oysters were measured monthly over six months. The concentrations of all metals decreased significantly (p < 0.05) for Cd 87%, Pb 83%, Cu 78%, and Zn 59%. In addition, metal depuration in oysters was investigated under laboratory conditions. Oysters were exposed to 100 μg g-1 of metals for two weeks followed by one week of depuration. Our studies suggest that metals in oysters tend to be lost in the order, Cd > Pb > Cu > Zn. A comparison between laboratory and field data showed that depuration of metals under the laboratory conditions is significantly faster than in the field.

Item Type:Article
Keyword:Depuration; Heavy metals; Malaysia; Oysters; Pig farm effluent
Subject:Heavy metals - Bioaccumulation - Malaysia - Selangor
Subject:Oysters - Contamination - Malaysia - Selangor
Subject:Oysters - Effect of heavy metals on - Malaysia - Selangor
Faculty or Institute:Faculty of Engineering
Publisher:Taylor & Francis
DOI Number:10.1080/02772240400007039
ID Code:18581
Deposited By: Azwana Abdul Rahman
Deposited On:30 Nov 2011 05:19
Last Modified:30 Nov 2011 05:19

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