Groundwater Arsenic in the Bengal Delta Plain: Geochemical and Geomorphological Perspectives
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- 作者：D. Chatterjee ; debashis.chatterjee.ku@gmail.com ; A. Kundu ; D. Saha ; S. Barman ; U. Mandal
- 关键词：Groundwater ; Arsenic ; Heterogeneity ; Land use pattern ; (Hydro)chemistry
- 刊名：Procedia Earth and Planetary Science
- 出版年：2017
- 出版时间：2017
- 年：2017
- 卷：17
- 期：Complete
- 页码：622-625
- 全文大小：224 K
- 卷排序：17
文摘
The presence of arsenic (As) in groundwater is a wide-spread problem in south-east Asia, especially West Bengal (India) and Bangladesh. Water quality and chemistry of the groundwater have been investigated by a systematic screening operation of tube wells in a locality in West Bengal (India). Groundwater is predominantly of Ca-HCO3− type and is occasionally enriched with Na and Cl− in shallow wells (15-20 m) which may be an indicator of local pollution source. The groundwater As distribution and their relationship with land-use characteristics suggest that As release is also influenced by local land use conditions (e.g., sanitation, surface water bodies and agricultural practices). The interconnectivity of these land use conditions with the aquifer underneath often facilitates As release creating heterogeneity in their distribution.