The Lhasa River is the largest and most important tributary of the Brahmaputra River on the Tibetan Plateau,which is the main source of drinking water,agricultural irrigation,and industrial water for
Thallium, a highly toxic pollutant, has greater toxicity to mammals than common heavy metals such as lead,cadmium. Manganese dioxides (MnO2) are among important absorbents in the removal of heavy meta