Environmental behavior of arsenic in a mining zone: Zimapan, Mexico

被引：0

作者：

Armienta, M. A. ^{[1
]}

Rodriguez, R. ^{[1
]}

Cruz, O. ^{[1
]}

Aguayo, A. ^{[1
]}

Ceniceros, N. ^{[1
]}

Villasenor, G. ^{[1
]}

Ongley, L. K. ^{[1
]}

Mango, H. ^{[1
]}

机构：

[1] Univ Nacl Autonoma Mexico, Inst Geofis, Mexico City, DF, Mexico

来源：

NATURAL ARSENIC IN GROUNDWATER: OCCURRENCE, REMEDIATION AND MANAGEMENT | 2005年

关键词：

D O I：

暂无

中图分类号：

TV21 [水资源调查与水利规划];

学科分类号：

081501 ;

摘要：

The distribution and fate of arsenic in various environmental reservoirs have been studied in Zimapan, Mexico. Natural arsenic in groundwater is released by oxidation and dissolution of arsenic-bearing minerals. Mining wastes (tailings and smelter particulates) pollute some of the shallow wells. Tailings contain high concentration of As. However, As mobility is limited by oxidation-reduction, sorption, and formation of secondary minerals. Sequential extraction showed that As is mainly retained in the residual and Fe/Al oxyhydroxides fractions. Arsenic occurs also in beudantite and K-jarosite. High arsenic concentrations are found in soils and river sediments near tailings, slag piles and mineralized areas. Due to the semi-arid climate, few crops are grown in this area. Nevertheless, wild flora has grown on tailing and slag piles, and As-rich soils. Arsenic is absorbed from these As-rich substrates and translocated to the stem, leaves, flowers and fruits. The concentrations and fate of arsenic varies depending on the arsenic source.

引用

页码：125 / 130

页数：6

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