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Analysis of Mn and As Concentrations in Deep Groundwater Tubewells of Araihazar, Bangladesh

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Groundwater levels of both As and Mn are much higher in Bangladesh than standards set by the World Health Organization (WHO). Literature about Bangladesh's geology indicates arsenic concentration decreases with well depth in some areas. In mid-May 2007, two new community wells were reinstalled in areas where previously installed wells had become contaminated for reasons yet to be determined. Sediment samples collected during drilling were tested with field kits for As and Mn levels. Sediment levels of As and Mn may predict the concentration in actual drinking water. The field tests were then replicated in the laboratory. Samples were then run through an ICP mass spectrometer to obtain more exact results. The project's ultimate goal is to determine if a relationship between As, Mn, and/or depth exists in the specified aquifers of Bangladesh and to determine if a safe well depth can be determined through the use of field methods.
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Keywords: Arsenic contamination; Bangladesh; Manganese contamination; drinking water; groundwater

Document Type: Research Article

Publication date: 2009-01-01

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