Advance in research on the occurrence and transformation of arsenic in the freshwater lake ecosystem

Abstract

Arsenic (As) , which ranks 20th in abundance in the earth忆s crust, is a ubiquitous and toxic element in the environment. The impact of As pollution on ecosystem and human health has become one of the major environmental concerns in the world. Large amount of As from both geogenic and anthropogenic sources have entered into the waters such as groundwater, rivers and lakes, resulting in adverse effects on human health. This paper reviews the literature regarding