Alexander van Geen, Habibul Ahsan, A. Horneman, Ratan Dhar et al.
OBJECTIVE: To survey tube wells and households in Araihazar upazila, Bangladesh, to set the stage for a long-term epidemiological study of the consequences of chronic arsenic exposure. METHODS: Water samples and household data were collected over a period of 4 months in 2000 from 4997 contiguous tub...
W. G. Burgess, M. A. Hoque, Holly A. Michael, Clifford I. Voss et al.
Yan Zheng, Alexander van Geen, M. Stute, Ratan Dhar et al.
Natalie Mladenov, Yan Zheng, Bailey Simone, Theresa M. Bilinski et al.
In some high arsenic (As) groundwater systems, correlations are observed between dissolved organic matter (DOM) and As concentrations, but in other systems, such relationships are absent. The role of labile DOM as the main driver of microbial reductive dissolution is not sufficient to explain the va...
Mattias von Brömssen, Md. Jakariya, Prosun Bhattacharya, Kazi Matin Ahmed et al.
Groundwater with high concentration of geogenic arsenic (As) occurs extensively in the Holocene alluvial aquifers of Bangladesh. Local drillers in Matlab Upazilla are constructing deeper tubewells than in the recent past, primarily because of low concentrations of dissolved Fe and As. Locally a thic...
M. Stute, Yan Zheng, Peter Schlösser, A. Horneman et al.
The elevated arsenic (As) content of groundwater from wells across Bangladesh and several other South Asian countries is estimated to slowly poison at least 100 million people. The heterogeneous distribution of dissolved arsenic in the subsurface complicates understanding of its release from the sed...
H.C. Bonsor, Alan MacDonald, Kazi Matin Ahmed, W. G. Burgess et al.
The Indo-Gangetic aquifer is one of the world's most important transboundary water resources, and the most heavily exploited aquifer in the world. To better understand the aquifer system, typologies have been characterized for the aquifer, which integrate existing datasets across the Indo-Gangetic c...
Alexander van Geen, Yan Zheng, S. L. Goodbred, A. Horneman et al.
Whereas serious health consequences of widespread consumption of groundwater elevated in As have been documented in several South Asian countries, the mechanisms responsible for As mobilization in reducing aquifers remain poorly understood. We document here a previously unrecognized and consistent r...
Abhijit Mukherjee, Mattias von Brömssen, Bridget R. Scanlon, Prosun Bhattacharya et al.
Although arsenic (As) contamination of groundwater in the Bengal Basin has received wide attention over the past decade, comparative studies of hydrogeochemistry in geologically different sub-basins within the basin have been lacking. Groundwater samples were collected from sub-basins in the western...
Mahmudul Hasan, Kazi Matin Ahmed, Ondra Šráček, Prosun Bhattacharya et al.
Alexander van Geen, Zhongqi Cheng, Ashraf Ali Seddique, M. A. Hoque et al.
A comparison of field and laboratory measurements of arsenic in groundwater of Araihazar, Bangladesh, indicates that the most widely used field kit correctly determined the status of 88% of 799 wells relative to the local standard of 50 microg/L As. Additional tests showthatthe inconsistencies, main...
Andrew S. Ferguson, Alice C. Layton, Brian J. Mailloux, Patricia J. Culligan et al.
Groundwater is routinely analyzed for fecal indicators but direct comparisons of fecal indicators to the presence of bacterial and viral pathogens are rare. This study was conducted in rural Bangladesh where the human population density is high, sanitation is poor, and groundwater pumped from shallo...
Madhumita Chakraborty, Abhijit Mukherjee, Kazi Matin Ahmed
K. A. Radloff, Yan Zheng, Holly A. Michael, M. Stute et al.
Drinking shallow groundwater with naturally elevated concentrations of arsenic is causing widespread disease in many parts of South and Southeast Asia. In the Bengal Basin, growing reliance on deep (>150 m) groundwater has lowered exposure. In the most affected districts of Bangladesh, shallow groun...
Prosun Bhattacharya, Alan H. Welch, Kazi Matin Ahmed, Gunnar Jacks et al.