Phytoavailability of antimony and heavy metals in arid regions: The case of the Wadley Sb district (San Luis, Potosi, Mexico)
Por:
Levresse G., Lopez G., Tritlla J., López E.C., Chavez A.C., Salvador E.M., Soler A., Corbella M., Sandoval, LGH, Corona-Esquivel R.
Publicada:
15 jun 2012
Resumen:
This paper presents original results on the Sb and heavy metals contents in sediments and waste tailings, plants and water from the giant Wadley antimony mine district (San Luis Potosi State, Mexico). The dominant antimony phases in mining wastes are stibiconite, montroydite and minor hermimorphite. The waste tailings contain high concentrations of metals and metalloids (antimony, iron, zinc, arsenic, copper, and mercury). Manganese, copper, zinc, and antimony contents exceed the quality guidelines values for groundwater, plants and for waste tailings. Results indicate that peak accumulation is seasonal due to the concentration by high metabolism plants as Solanaceae Nicotiana. The metal phytoavailability in waste tailings is highly dependant on the metal speciation, its capability to be transported in water and, more particularly, the plant metabolism efficiency. (C) 2012 Elsevier B.V. All rights reserved.
Filiaciones:
Levresse G.:
Geofluidos, Ctr Geociencias, Santiago De Queretaro 76230, Queretaro, Mexico
Lopez G.:
Geofluidos, Ctr Geociencias, Santiago De Queretaro 76230, Queretaro, Mexico
Tritlla J.:
Geofluidos, Ctr Geociencias, Santiago De Queretaro 76230, Queretaro, Mexico
López E.C.:
Departament de Geologia, Facultat de Ciències, Universitat Autònoma de Barcelona, Spain
Chavez A.C.:
Geofluidos, Ctr Geociencias, Santiago De Queretaro 76230, Queretaro, Mexico
Salvador E.M.:
Geofluidos, Ctr Geociencias, Santiago De Queretaro 76230, Queretaro, Mexico
Soler A.:
Departament de Cristal.lografia, Mineralogia i Dipòsits Minerals, Facultat de Geologia, Universitat de Barcelona (UB), Martí i Franquès s/n, 08028 Barcelona, Spain
Corbella M.:
Departament de Geologia, Facultat de Ciències, Universitat Autònoma de Barcelona, Spain
Corona-Esquivel R.:
Univ Nacl Autonoma Mexico, Inst Geol, Mexico City 04510, DF, Mexico
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