Arsenic is a white metalloid solid element widely distributed in the nature and present at an average concentration of 2 mg/kg. To form organic and inorganic compounds, arsenic can combine with other elements. Compare with organic arsenic compounds, Inorganic arsenic compounds are thought to be more toxic. Arsenic occurs in crystalline, powder, amorphous or vitreous forms in all rock, soil, water and air. Industrial processes such as smelting, mining, and coal-fired power plants all contribute to the presence of arsenic in air, water and…