Reciprocal influence of arsenic and iron on the long-term immobilization of arsenic in contaminated soils

The main aim of this work was to evaluate the fate of arsenic associated with iron minerals in contaminated soils. The ageing behavior of synthetic arsenic-bearing poorly crystalline minerals - ferrihydrite and schwertmannite - was studied. Arsenic showed a passivation effect on poorly crystalline m...

Full description

Saved in:
Bibliographic Details
Published inEnvironmental Arsenic in a Changing World pp. 467 - 469
Main Authors Sun, Y., Antelo, J., Lezama-Pacheco, J., Fiol, S., Fendorf, S., Kumpiene, J.
Format Book Chapter
LanguageEnglish
Published CRC Press 2019
Edition1
Subjects
Inductively Coupled Plasma Mass Spectrometry
AMD System
Monomethylarsonic Acid
Hydride Generation Atomic Fluorescence Spectroscopy
Batch Adsorption Experiments
Arsenate Adsorption Capacity
XAS
Stanford Synchrotron Radiation Lightsource
SLAC National Laboratory Accelerator
Dimethylarsinic Acid
Yangtze River
Iron Molar Ratio
DSC Curve
Yangtze
AS3MT
Fe Oxide Particles
Muffle Oven
Synthetic Ferrihydrite
XAS Spectrum
SEM
Synthetic Iron Oxides
Edge EXAFS
Ars Operon
Online AccessGet full text

Cover

More Information
Summary:The main aim of this work was to evaluate the fate of arsenic associated with iron minerals in contaminated soils. The ageing behavior of synthetic arsenic-bearing poorly crystalline minerals - ferrihydrite and schwertmannite - was studied. Arsenic showed a passivation effect on poorly crystalline minerals, delaying their transformation towards more crystalline iron oxides. These results agreed well with studies performed on contaminated soils and sediments. These results are relevant in order to understand the long-term mobility of arsenic in contaminated soils and sediments. Iron oxides sequesters arsenic efficiently and, reciprocally, arsenic stabilize the mineral, delaying its transformation towards more crystalline phases.
ISBN:1138486094
9781138486096
DOI:10.1201/9781351046633-184