Pay Attention to the Heavy Metals Research of Environment in Arid Regions of Northwest China, and Central Asia

Heavy metals are an important class of pollutants which can produce considerable harm to the environment when they are above certain concentration [1]. In these days, heavy metals pollution are detected in the rivers, lakes, soils and atmosphere environment of the world, where have relatively much more man-made pollutions, such as mining area, factory parks, busy ports and gulfs, and sewage irrigation regions, etc. The research contents referred the total amount, the chemical forms and the biotoxicity of heavy metals of the environment [2].