Indigenous Bacteria-Mediated Release and Transformation of As in Aquifer Sediment from the Hetao Basin, Inner Mongolia

• 责任者：Guo Huaming (School of Water Resources and Environment ; China University of Geosciences ; Beijing 100083 ; China) ; Tang Xiaohui
• 刊名：Geoscience
• 出版年：2009
• 卷期：23(1)
• 关键词：沉积物 ; sediments ; 砷 ; arsenic ; 地下水 ; groundwater ; 内蒙古 ; Inner Mongolia
• 页码：p.86-93
• 图表：9 illus., 1 table, 31 refs.
• 分类号：1800
• issnNo：ISSN1000-8527
• isbnNo：CN11-2035/P

Mechanisms of As enrichment have received much attention at both scientific and governmental levels. Intact sediments and indigenous bacteria were sampled from high As aquifer of the Hetao Basin, Inner Mongolia. Bacteria leaching experiments were conducted by using deionized water and two artificial water solutions in different nutrient conditions (including 2% glucose as carbon source and glucose-free). The results show that glucose has stimulated indigenous bacteria activities, which has resulted in a continuous decrease in suspension pH and a distinct increase in As concentration of glucose-amended suspensions.