Hydrogeochemical characteristics of the aquifers with variable arsenic concentrations

B. Nath, J. S. Jean, D. Stüben, D. Chatterjee, S. B. Mallik

研究成果: Conference contribution

摘要

Arsenic (As) concentrations in groundwater range between >0.1 and 476μl -1, with localized high concentrations in abandoned meander/channel deposits. The groundwater flow lines tend to be deflected away from the high As aquifer. This indicates both low permeability and low recharge rates, as well as an abundance of fine-grained sediments associated with high As areas. These factors allow for high groundwater residence time for sediment-water interaction to occur, thus facilitating the release of As from meander/channel deposits. Borehole lithology analysis confirms our assumption, where finer-sediments are associated with the high As concentrations. Moreover, the presence of silt/clay intercalations within the sandy aquifer at the sites showing high As seems to influence As mobility.

原文English
主出版物標題Water-Rock Interaction - Proceedings of the 12th International Symposium on Water-Rock Interaction, WRI-12
頁面1097-1100
頁數4
出版狀態Published - 2007
事件12th International Symposium on Water-Rock Interaction, WRI-12 - Kunming, China
持續時間: 2007 7月 312007 8月 4

出版系列

名字Water-Rock Interaction - Proceedings of the 12th International Symposium on Water-Rock Interaction, WRI-12
2

Other

Other12th International Symposium on Water-Rock Interaction, WRI-12
國家/地區China
城市Kunming
期間07-07-3107-08-04

All Science Journal Classification (ASJC) codes

  • 地球化學與岩石學
  • 水科學與技術

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