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    Heavy metal studies of core sediments, Ashtamudi estuary, Southern Kerala, India.

    Access Status
    Fulltext not available
    Authors
    Nagendra, R.
    Ramasamy, Nagarajan
    Prakash, T.
    Tiju, V.
    Date
    2017
    Type
    Journal Article
    
    Metadata
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    Citation
    Nagendra, R. and Ramasamy, N. and Prakash, T. and Tiju, V. 2017. Heavy metal studies of core sediments, Ashtamudi estuary, Southern Kerala, India.. Journal of The Indian Association of Sedimentologists. 34 (1&2): pp. 127-139.
    Source Title
    Journal of The Indian Association of Sedimentologists
    Additional URLs
    http://www.indiansedimentologists.com/
    ISSN
    0970-3268
    School
    Curtin Malaysia
    URI
    http://hdl.handle.net/20.500.11937/57830
    Collection
    • Curtin Research Publications
    Abstract

    The investigation carried out on metals concentration in Ashtamudi estuarine core sediments reveals that, the pollution load index values in core 1 (AS 05) at mouth of estuary ranging from 1.56 to 1.95 with an average value of 1.72 and in core 3 (AS 17) at southern Kayal from 1.62 to 2.07; with an average 1.92 and in core 2 (AS 16) at central Kayal it ranged from 1.91 to 3.07 with higher average value of 2.33, which indicates that core 2 sediments are highly contaminated compare to that the core sediments core 1 and 3. The average enrichment factors of Cr 4.31; 3.47; 4.21 in core1, 2 and 3 respectively, Ni, 3.92; 3.49; 3.42 in core 1, 2 and 3 respectively and Cu 3.23 in core 2 are >2, suggesting contamination of these metals in the Ashtamudi estuary sediments. The adverse effect of the metals in the core sediments indicates that Ni concentration is recorded higher than the ERM values in all the three core sediments, Cu concentrations in core 2 and Cr concentrations in core 3, are potentially of concern, as they are between ERL and ERM with an effect of 93%, 87% and 83% respectively. Cu in core 1 and 3, Cr in 1 and 3 and Zn in core 2 and 3 concentration are recorded lower than the ERL value, whereas Pb concentration in core 1 shows that 13% of samples are recorded lower than the effects range.

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