Soil clay components and trace metal stabilization
Por:
Martha Daniela, Bobadilla Ballesteros, Sanchez Xochitl, Tapia, Beatriz Marcela, Millan Malo, Romero Elizabeth, Fuentes, Norma Eugenia, Garcia Calderon, Patricia Eugenia, Altuzar Coello
Publicada:
1 ene 2018
Resumen:
Soils from a toposequence were investigated in order to illustrate their functionality to stabilize heavy metals into their clay-mineral components in samples from weakly developed technogenic soils (located near a mine dumps) in transects from the lower part and their dissipation to the middle and upper steep-slope. To date the impact of layer alumino-silicates in Teclnosols from these regions have not been smdied in detail. The aim of the present research was to examine the influence of clay minerals in soil profiles and their relationship between stabilization and storage of Zn. Cd. Pb. As and Cu in the mining area that were extracted and casting of sphalerite in Xichú. Guanajuato. México. Clay fractions were obtained from each soil horizon and analyzed using X-ray Diffractometiy and Thennogravimetric analysis and Inductived coupled plasm. The profiles analyzed were previously identified as Technosol and Cambisol[3], results of their clay mineralogy indicate the presence of high calcite content in the upper part, and prevalence of Illite-Chlorite intergrades in the middle and lower part. Influence of the mine dumps is located in the topsoil of the lower part, decreasing from Zn>As>Pb>Cu>Cd. but mainly in the subsurface from 2-20 cm Zn>As>Pb>Cu-Cd of the total trace elements. © 2018, Centro de Ciencias de la Atmosfera, UNAM. All rights reserved.
Filiaciones:
UMDI J, Fac Ciencias, Juriquilla, Queretaro, Mexico
Ctr Fis Aplicada & Tecnol Avanzada, Juriquilla, Queretaro, Mexico
Univ Nacl Autonoma Mexico, Inst Energias Renovables, Mexico City, DF, Mexico
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