ABSTRACT
Soil is a main component of the environment and the base of human activities such as agriculture, construction, and so forth. A soil can be described as an open, multicomponent chemical system that contains solid, liquid, and gaseous phases in«uenced by living organisms (Thornton 1983). Soils can be contaminated with heavy metals derived from various arti’cial sources (Adriano 1986). Especially, inorganic contaminants, such as heavy metals and metalloid, have attracted interest from many researchers due to their
CONTENTS
Introduction ......................................................................................................... 451 Arsenic in Mining Area Soils ............................................................................. 452
Arsenic in Environment ................................................................................ 452 Geochemical Characteristics of Arsenic ...................................................... 455
Stabilization of Arsenic....................................................................................... 457 General Principle and Mechanisms of Stabilization ................................. 457 Stabilizing Agent ............................................................................................ 457
Cement ........................................................................................................ 457 Pozzolans .................................................................................................... 458 Lime ............................................................................................................. 458
Leaching Test ................................................................................................... 458 Arsenic Stabilization ...................................................................................... 459
Cement/Lime/Fly Ash ............................................................................. 459 Iron (hydr)oxides .......................................................................................460
Field Application of the Stabilization ...............................................................465 Stabilization of Arsenic in Mine Tailings ....................................................465 Stabilization of Arsenic in Soil ...................................................................... 467
Summary .............................................................................................................. 469 References ............................................................................................................. 470
