Variation of arsenic in shallow aquifers of the Bengal Basin : Controlling geochemical processes

• The natural occurrence of high dissolved Arsenic (As) in groundwater is quiet common and has been reported from almost entire globe. Nevertheless the scale of problem is most severe in several countries of South and South East Asia, notably in BDP (Bengal Delta Plain). Different As release mechanism has been put forward to explain As enrichment in groundwater. The groundwater As distribution and their relationship with land-use pattern suggest that As release is influenced by local conditions (e.g. sanitation, presence of surface water, agricultural practice). High rate of groundwater withdrawl can accelerate As mobilization by enhancing the transport of degradable organic matter with recharge water from the surface.

Ämnesord

NATURVETENSKAP  -- Geovetenskap och miljövetenskap (hsv//swe)

NATURAL SCIENCES  -- Earth and Related Environmental Sciences (hsv//eng)

Nyckelord

Aquifers

Arsenic

Groundwater

Groundwater resources

Hydrogeology

Land use

Surface waters

Sustainable development

Agricultural practices

Bengal delta plains

Geochemical process

Groundwater as

Land use pattern

Local conditions

Release mechanism

Shallow aquifers

Recharging (underground waters)

Publikations- och innehållstyp

ref (ämneskategori)

kon (ämneskategori)