Research and prospect of arsenic source and its regulation in arable land soil.

Arsenic hazard is severe serious to environment and human health. In recent years,arsenic is paid high concern as a toxic metallic element. This paper summarized the latest research results at home and abroad,deemed that there existed an obvious tendency of arsenic accumulation in arable land in China. The paper also analyzed the natural and anthropogenic sources of arsenic. Meanwhile,this paper systemetically introduced the related control measures adopted at present including the physics,chemistry,biology,and agronomy methods,from the angle of removing arsenic from arable land and reducing its effectiveness. Furthermore,this paper prospected the future research direction and hotspots.