Advances in Earth Science
Yitong Yin,Ximing Luo. Interactions Between Stabilized Arsenic by Fe-based Media and Soil Microbes in the Rhizosphere[J]. Advances in Earth Science, 2020, 35(10): 1052-1063.
Assessment of the stability of stabilized arsenic in soils in revegetated areas after in-situ restoration has been regarded as a key component in environmental risk assessment， while the interaction between stabilized arsenic by Fe-based media and soil microbes in the rhizosphere is also critical for environmental risk assessment. According to the relevant research progress in the last five years， the paper elucidated three key aspects of this problem： Arsenic-contaminated soil remediation with iron containing media， structural characterization of microbial communities in arsenic-contaminated soil， and the arsenic-releasing process that involves the participation of rhizosphere microorganisms on the Fe-based media. This review finds that Fe-based media is an essential material for stabilizing arsenic in soil， but its impact is strongly affected by circumstance change and microbial action. After arsenic stabilization， microbial communities in the soil would be changed by Fe-based reagents， then the further evolution of microbial community structure will occur during continuing revegetation because of rhizosphere effect， and finally new microbial communities will form. In this process， the interface reaction between rhizosphere microbes and iron containing media with arsenic is an important factor affecting the stability of arsenic in soils. Therefore， it is of great significance to understand this interaction in the future. Furthermore，the reaction between rhizosphere microorganisms in revegetated areas and the stability of stabilized arsenic was also discussed. The purpose of this paper was to provide more information for the mobility of arsenic in the complex soil environment.