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    Characterisation of arsenic contamination in groundwater by statistical methods

    Access Status
    Fulltext not available
    Authors
    Anwar, Faisal
    Kawonine, N.
    Date
    2012
    Collection
    • Curtin Research Publications
    Type
    Journal Article
    Metadata
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    Abstract

    Statistical investigation on groundwater arsenic concentration data of southwest Bangladesh was performed. Two data sets of 1998-99 and 2002-03 were selected for this analysis. Summary statistics of the data shows that the mean concentration exceeds the Bangladesh limit (0.05mg/l) in all areas. Normality of arsenic concentration data was checked by frequency histogram, skewness coefficient and chi-square goodness-of-fit test and found that the arsenic contamination is not normally distributed. The data were checked for spatial distribution by plotting contour maps and it shows substantial spatial variation. Temporal variability was tested by students t-test and found that the area closer to the confluence of Ganges-Meghna-Jamuna river showing significant temporal variation. Vertical variability of arsenic contamination shows that more than 80-90% of the shallow aquifer (<150m) are contaminated with arsenic (>0.05mg/l). Though deep aquifer (>150m) is still considered as arsenic free but 1-3% of deep tubewells water was also found contaminated with arsenic.

    Citation
    Anwar, F. and Kawonine, N. 2012. Characterisation of arsenic contamination in groundwater by statistical methods. International Journal of Global Environmental Issues. 12 (2-4): pp. 302-317.
    Source Title
    International Journal of Global Environmental Issues
    URI
    http://hdl.handle.net/20.500.11937/49326
    Additional URLs
    http://www.inderscience.com/ijgenvi
    Department
    Department of Civil Engineering

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    • Characterisation of arsenic contamination in groundwater by statistical methods
      Anwar, Faisal; Kawonine, N. (2012)
      Statistical investigation on groundwater arsenic concentration data of southwest Bangladesh was performed. Two data sets of 1998-99 and 2002-03 were selected for this analysis. Summary statistics of the data shows that ...
    • Characterisation of arsenic contamination in groundwater by statistical methods
      Anwar, Faisal; Kawonine, N. (2012)
      Statistical investigation on groundwater arsenic concentration data of southwest Bangladesh was performed. Two data sets of 1998-99 and 2002-03 were selected for this analysis. Summary statistics of the data shows that ...
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