文章基本信息

标题：INFLUENCIA DE LOS MINERALES DE LOS JALES EN LA BIOACCESIBILIDAD DE ARSÉNICO, PLOMO, ZINC Y CADMIO EN EL DISTRITO MINERO ZIMAPÁN, MÉXICO
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作者：Raúl MORENO TOVAR ; Jesús TÉLLEZ HERNÁNDEZ ; Marcos G. MONROY FERNÁNDEZ 等
期刊名称：Revista Internacional de Contaminación Ambiental
印刷版ISSN：0188-4999
出版年度：2012
卷号：28
期号：3
页码：203-218
语种：Spanish
出版社：Centro de Ciencias de la Atmósfera
摘要：The state of Hidalgo has been, through centuries, an important producer of gold, silver, lead, zinc and copper in Mexico, thanks to the exploitation of metallic resources of deposits of the skarn type, generating a great volume of residues (tailings) deposited in dams for over 450 years, which have not been rehabilitated or restored. The tailings present variable and complex mineralogy constituted by calcosilicates, sulfides and sulfosalts. Also, the concentrations of As, Sb, Se, Zn, Cu, Pb, Cd, Bi and Mn, are notable, considered potentially toxic elements (PTE). The mineralogic characterization by polarized optical microscope (POM), scanning electronic microscope (SEM) and microprobe (Mp), allowed determination of the primary and secondary mineralogy of the tailings. Additionally, the formation of ferric hidroxides and sulfates as products of the preferential alteration of pyrrhotite was identified, as well as ferric arsenates (scorodite and symplesite) as a result of border alterations of arsenopyrite. The bioaccessible content of arsenic, lead, cadmium and zinc was quantified using the PBET (Physiologically Based Extraction Test) method, for the gastric (pH 1.3) and intestinal (pH 7.0) phases. The bioaccessibility and percentage of bioaccessibility of arsenic and lead is highest in the gastric phase, while zinc and cadmium are variable in both phases.
其他摘要：The state of Hidalgo has been, through centuries, an important producer of gold, silver, lead, zinc and copper in Mexico, thanks to the exploitation of metallic resources of deposits of the skarn type, generating a great volume of residues (tailings) deposited in dams for over 450 years, which have not been rehabilitated or restored. The tailings present variable and complex mineralogy constituted by calcosilicates, sulfides and sulfosalts. Also, the concentrations of As, Sb, Se, Zn, Cu, Pb, Cd, Bi and Mn, are notable, considered potentially toxic elements (PTE). The mineralogic characterization by polarized optical microscope (POM), scanning electronic microscope (SEM) and microprobe (Mp), allowed determination of the primary and secondary mineralogy of the tailings. Additionally, the formation of ferric hidroxides and sulfates as products of the preferential alteration of pyrrhotite was identified, as well as ferric arsenates (scorodite and symplesite) as a result of border alterations of arsenopyrite. The bioaccessible content of arsenic, lead, cadmium and zinc was quantified using the PBET (Physiologically Based Extraction Test) method, for the gastric (pH 1.3) and intestinal (pH 7.0) phases. The bioaccessibility and percentage of bioaccessibility of arsenic and lead is highest in the gastric phase, while zinc and cadmium are variable in both phases.
关键词：tailing dams;mineralogy;bioaccessibility;mineralogic characterization;gastric;intestinal;presa de jales;mineralogía;bioaccesibilidad;caracterización mineralógica;gástrica;intestinal
其他关键词：tailing dams; mineralogy; bioaccessibility; mineralogic characterization; gastric; intestinal