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Chemistry and Ecology
Year: 2008  |  Volume: 24  |  Issue: 6  |  Page No.: 437 - 447

Geochemistry of heavy metals in the surficial sediments of mangroves of the south west coast of India

P. R. Sarika and N. Chandramohanakumar    

Abstract: The distribution and speciation of Fe, Mn and Cu in six geographically different mangroves of the south west coast of India have been examined. The metal concentrations in sediments ranged from 0.53-95.44 mg/g for iron, 12.16-325.98 μg/g for manganese and 0.13-243.32 μg/g for copper. The metal levels in sediments were comparable with those from similar aquatic systems. Speciation of metals in sediments and principal component analysis (PCA) of the speciation data indicates that ultimate storage of iron is in the inorganic pyrite form. Manganese and copper exhibit temporary storage by associations with organic matter.

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