Temporal and seasonal variability of arsenic in drinking water wells in Matlab, southeastern Bangladesh: A preliminary evaluation on the basis of a 4 year study

  • Bhattacharya P
  • Hossain M
  • Rahman S
 et al. 
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Temporal and seasonal variability of As concentrations in groundwater were evaluated in As-affected areas of Matlab, southeastern Bangladesh. Groundwater samples from 61 randomly selected tubewells were analyzed for As concentrations over a period of three years and four months (from July 2002 to November 2005) and monitored seasonally (three times a year). The mean As concentrations in the sampled tubewells decreased from 153 to 123 μg/L during July 2002 to November 2005. Such changes were pronounced in tubewells with As concentration >50 μg/L than those with As concentrations 40 m) wells. However, to adequately evaluate temporal and seasonal variability of As concentration, it is imperative to monitor As concentrations in tubewells over a longer period of time. Such long-term monitoring will provide important information for the assessment of human health risk and the sustainability of safe drinking water supplies.

Author-supplied keywords

  • Arsenic
  • Bangladesh
  • Matlab
  • groundwater
  • temporal variation

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  • Prosun Bhattacharya

  • Mohammed Hossain

  • Shamsun Naima Rahman

  • Clare Robinson

  • Bibhash Nath

  • Marina Rahman

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