The status of heavy metal levels in a Ramsar site,Kuala Gula bird sanctuary: the impact of the anthropogenic inputs |
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Authors: | RM Lomoljo CK Yap Abdul A Rahim Ismail |
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Institution: | Faculty of Science, Department of Biology , Universiti Putra Malaysia (UPM) , 43400 Serdang, Selangor, Malaysia |
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Abstract: | Distributions of Cd, Cu, Pb, and Zn in the surface sediments from two sites of the Kuala Gula Bird Sanctuary, Malaysia were monitored for a period of 6 months from October 2006 to March 2007. In December 2006, the concentration of Zn in one location was significantly (p?0.05) higher (3.9?±?1.3?mg?kg?1) than the other metals at both sites, but in the oxidizable organic fraction it was highest at both sites during October; with mean concentrations of 18?mg?kg?1 at both locations. In the acid-reducible fraction, high concentrations of Pb (2.3?mg?kg?1) were detected at station 2 in February 2007, being highest among all four metals at both stations. The acid-reducible fraction found in Pb ranged from 0.10% to 3.1% in both stations. Percentages ranging from 51% to 96% were observed for all four metals in the resistant fraction throughout the sampling period. These results indicate low contributions from anthropogenic sources. The findings constitute a baseline data archive for future reference. |
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Keywords: | geochemical fractionionation metals intertidal mudflat sediments Ramsar site Kuala Gula |
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