| arsenic and fluoride in the groundwater of mexico. | concentrations of arsenic and fluoride above mexican drinking water standards have been detected in aquifers of various areas of mexico. this contamination has been found to be mainly caused by natural sources. however, the specific processes releasing these toxic elements into groundwater have been determined in a few zones only. many studies, focused on arsenic-related health effects, have been performed at comarca lagunera in northern méxico. high concentrations of fluoride in water were also ... | 2008 | 18335171 |