Arsenic in Soils Affected by Mining: Microscopic Studies vs. Sequential Chemical Extraction

International Journal of Environmental Research and Public Health
Jessica Álvarez-QuintanaAlmudena Ordóñez

Abstract

Soil samples from three inactive mines, corresponding to different Arsenic-bearing mineralization types, were collected and studied. The aim was to determine the influence of mine wastes mineralogy/geochemistry and texture in As mobility and to compare results from sequential chemical extraction and microscopic techniques (optical and electron) at a grain scale. Arsenic in soils is found mainly associated to the residual fraction, indicating that mechanical As dispersion is mainly responsible for As soil pollution. The use of objective microscopic techniques (i.e., Scanning Electron Microscopy-Energy Dispersive Spectroscopy -SEM-EDS-, High Resolution Transmission Electron Microscopy -HR-TEM) has pointed out that the selected sequential extraction method overestimates the role of Mn amorphous oxy-hydroxides and organic matter in As retention while underestimating the mechanism of As adsorption onto clay particle surfaces.

References

Dec 19, 2007·The Analyst·Jeffrey R Bacon, Christine M Davidson
Aug 12, 2009·Environment International·Petr Drahota, Michal Filippi
Apr 24, 2010·International Journal of Analytical Chemistry·Amanda Jo Zimmerman, David C Weindorf
Jun 19, 2012·The Science of the Total Environment·Raquel LariosIsabel Rucandio
Jan 15, 2013·Journal of Hazardous Materials·Ankan Basu, Madeline E Schreiber
Feb 23, 2013·Journal of Hazardous Materials·R ToujaguezL R G Guilherme
Jul 9, 2013·Analytica Chimica Acta·Muhammad Babar JavedTariq Siddique
Aug 31, 2017·International Journal of Environmental Research and Public Health·Thinh Nguyen VanKiyoshi Kurosawa

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BETA
electron microscopy
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