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Deutscher Akademischer Austauschdienst, DAAD
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RDF description of Evaluation of hydrochemical changes due to intensive aquifer exploitation: Case studies from Mexico - http://orbis.uaslp.mx/vivo/individual/scopus3156
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The impact of intensive aquifer exploitation has been observed in numerous places around the world. Mexico is a representative example of this problem. In 2010, 101 out of the 653 aquifers recognized in the country, showed negative social, economic, and environmental effects related to intensive exploitation. The environmental effects include, among others, groundwater level decline, subsidence, attenuation, and drying up of springs, decreased river flow, and deterioration of water quality. This study aimed at determining the hydrochemical changes produced by intensive aquifer exploitation and highlighting water quality modifications, taking as example the Valle de Toluca, Salamanca, and San Luis Potosi aquifers in Mexico%27s highlands. There, elements such as fluoride, arsenic, iron, and manganese have been detected, resulting from the introduction of older groundwater with longer residence times and distinctive chemical composition (regional flows). High concentrations of other elements such as chloride, sulfate, nitrate, and vanadium, as well as pathogens, all related to anthropogenic pollution sources (wastewater infiltration, irrigation return flow, and atmospheric pollutants, among others) were also observed. Some of these elements (nitrate, fluoride, arsenic, iron, and manganese) have shown concentrations above Mexican and World Health Organization drinking water standards. © Springer Science Business Media B.V. 2011.
Aquifer contamination; As; F. Mexico; Intensive exploitation Anthropogenic pollution; Aquifer contamination; Aquifer exploitation; Atmospheric pollutants; Chemical compositions; Drinking water standards; Drying-up; High concentration; Hydrochemical changes; Intensive exploitation; Irrigation return flows; Me-xico; Residence time; River flow; World Health Organization; Aquifers; Arsenic; Atmospheric movements; Chlorine compounds; Groundwater resources; Hydrochemistry; Hydrogeology; Manganese; Pollution; Vanadium; Water quality; Water supply; Groundwater pollution; arsenic; chloride; drinking water; fluoride; ground water; iron; manganese; nitrate; sulfate; vanadium; anthropogenic source; aquifer pollution; arsenic; concentration (composition); environmental effect; exploitation; fluoride; groundwater pollution; hydrochemistry; iron; manganese; nitrate; pollutant source; subsidence; water quality; air pollution; alkalinity; aquifer; article; chemical analysis; chemical composition; climate change; electric conductivity; environmental exposure; geochemistry; geology; hydraulic conductivity; hydrolysis; Mexico; porosity; precipitation; water contamination; Drinking Water; Environmental Monitoring; Fluorides; Groundwater; Mexico; Nitrates; Water Cycle; Water Pollutants, Chemical; Water Pollution, Chemical; Water Quality; Water Supply; Guanajuato; Mexico [Mexico (NTN)]; Mexico [North America]; Salamanca [Guanajuato]; San Luis Potosi; Toluca Valley; Toluca
The impact of intensive aquifer exploitation has been observed in numerous places around the world. Mexico is a representative example of this problem. In 2010, 101 out of the 653 aquifers recognized in the country, showed negative social, economic, and environmental effects related to intensive exploitation. The environmental effects include, among others, groundwater level decline, subsidence, attenuation, and drying up of springs, decreased river flow, and deterioration of water quality. This study aimed at determining the hydrochemical changes produced by intensive aquifer exploitation and highlighting water quality modifications, taking as example the Valle de Toluca, Salamanca, and San Luis Potosi aquifers in Mexico's highlands. There, elements such as fluoride, arsenic, iron, and manganese have been detected, resulting from the introduction of older groundwater with longer residence times and distinctive chemical composition (regional flows). High concentrations of other elements such as chloride, sulfate, nitrate, and vanadium, as well as pathogens, all related to anthropogenic pollution sources (wastewater infiltration, irrigation return flow, and atmospheric pollutants, among others) were also observed. Some of these elements (nitrate, fluoride, arsenic, iron, and manganese) have shown concentrations above Mexican and World Health Organization drinking water standards. © Springer Science%2bBusiness Media B.V. 2011.
Evaluation of hydrochemical changes due to intensive aquifer exploitation: Case studies from Mexico