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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemistry
Statistical modeling of global geogenic fluoride contamination in groundwaters
Environmental Science and Technology, Volume 42, No. 10, Year 2008
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Description
The use of groundwater with high fluoride concentrations poses a health threat to millions of people around the world. This study aims at providing a global overview of potentially fluoride-rich groundwaters by modeling fluoride concentration. A large database of worldwide fluoride concentrations as well as available information on related environmental factors such as soil properties, geological settings, and climatic and topographical information on a global scale have all been used in the model. The modeling approach combines geochemical knowledge with statistical methods to devise a rule-based statistical procedure, which divides the world into 8 different "process regions". For each region a separate predictive model was constructed. The end result is a global probability map of fluoride concentration in the groundwater. Comparisons of the modeled and measured data indicate that 60-70% of the fluoride variation could be explained by the models in six process regions, while in two process regions only 30% of the variation in the measured data was explained. Furthermore, the global probability map corresponded well with fluorotic areas described in the international literature. Although the probability map should not replace fluoride testing, it can give a first indication of possible contamination and thus may support the planning process of new drinking water projects. © 2008 American Chemical Society.
Authors & Co-Authors
Amini, Manouchehr
Switzerland, Dubendorf
Eawag - Swiss Federal Institute of Aquatic Science and Technology
Mueller, Kim
Switzerland, Dubendorf
Eawag - Swiss Federal Institute of Aquatic Science and Technology
Abbaspour, Karim C.
Switzerland, Dubendorf
Eawag - Swiss Federal Institute of Aquatic Science and Technology
Rosenberg, Thomas
Switzerland, Dubendorf
Eawag - Swiss Federal Institute of Aquatic Science and Technology
Afyuni, Majid
Iran, Isfahan
Isfahan University of Technology
Møller, Klaus N.
Denmark, Lyngby
Cowi A/s
Sarr, Mamadou
Senegal, Dakar
Service de Gestion et de Planification Des Resources en Ean (sgpre)
Johnson, Catherine Annette
Switzerland, Dubendorf
Eawag - Swiss Federal Institute of Aquatic Science and Technology
Statistics
Citations: 422
Authors: 8
Affiliations: 4
Identifiers
Doi:
10.1021/es071958y
ISSN:
0013936X
Research Areas
Environmental