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Cited by 159 publications
(70 citation statements)
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“…The widespread existence of oxidized sediments at depth would enhance the success of all deep-pumping strategies because of the capacity to remove dissolved arsenic. Geochemical modeling of groundwater (23) Oxidized sediment is brown or orange, contrasting with younger gray sediment, so local drillers could identify the arsenicimmobilizing sediments by color (24), and set screens tens of meters below the gray-orange interface to take advantage of this natural filter when installing deep wells.…”
Section: Discussionmentioning
confidence: 99%
“…The widespread existence of oxidized sediments at depth would enhance the success of all deep-pumping strategies because of the capacity to remove dissolved arsenic. Geochemical modeling of groundwater (23) Oxidized sediment is brown or orange, contrasting with younger gray sediment, so local drillers could identify the arsenicimmobilizing sediments by color (24), and set screens tens of meters below the gray-orange interface to take advantage of this natural filter when installing deep wells.…”
Section: Discussionmentioning
confidence: 99%
“…At present, 37 areas of these six districts near the Ganges River are highly affected, and more than 800,000 people from 312 villages use As-contaminated water for drinking; approximately 175,000 of them have developed arsenical skin lesions [141,142]. Groundwater is used extensively for drinking in Bangladesh, and about 6 million to 11 million tube wells currently are in use, about a quarter of which have As at concentrations exceeding the national drinking water standard (50 μg/ L) [143]. Recent reports estimate that as many as 35 million people are drinking As-contaminated groundwater in Bangladesh.…”
Section: Bangladesh and West Bengal (India)mentioning
confidence: 99%
“…Recent reports estimate that as many as 35 million people are drinking As-contaminated groundwater in Bangladesh. Southeast Bangladesh is recognized as the region most affected; here, the sediments are of the Holocene age and As concentrations in groundwater frequently exceed 200 μg/L [143]. In Bangladesh, As is predominantly of natural origin, and problems may arise with even minute quantities.…”
Section: Bangladesh and West Bengal (India)mentioning
confidence: 99%
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