首页|Geochemical and Hydrogeochemical Processes Determining Arsenic Presence in Rocks and Groundwater in the Southeastern Portion of El Bajío Guanajuatense,Guanajuato,Mexico
Geochemical and Hydrogeochemical Processes Determining Arsenic Presence in Rocks and Groundwater in the Southeastern Portion of El Bajío Guanajuatense,Guanajuato,Mexico
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
万方数据
Several aquifers located in North-Central Mexico have natural arsenic(As)concentra-tions higher than those allowed by national and international regulations;these aquifers are usually lo-cated in fractured volcanic environments that interact with sedimentary basins and have a carbonate basement.In this study,an evaluation of As in volcanic and sedimentary rocks collected at 13 sampling sites along the Sierra de Codornices(Guanajuato State,Central Mexico)was carried out.These geolog-ic materials are representative of the dominant hydrogeologic environment.The As content is dissemi-nated in volcanic rocks and the highest contents were obtained in felsic rocks;this information served to identify the hydrogeochemical processes related to the mobilization and transport of arsenic in the aquifer.The mobilization of As is a product of the dissolution of volcanic glass,a process involved in the alkaline desorption that occurs on As-containing mineral surfaces and possibly by the dissolution/desorption of Fe minerals and some clays,all these processes may be accelerated by the geothermal characteristics of the groundwater in the study area.
NETL
NSTL
万方数据
