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众所周知，环境砷污染是一个严重的公共卫生问题，特别是低浓度长期砷暴露引起的慢性地方性砷中毒（Ｅｎｄｅｍｉｃａｒｓｅｎｉｓｍ，简称地砷病）在许多国家均有发生。我国是世界上地砷病大国，除著名的台西南乌脚病流行区外，新疆、贵州、内蒙及山西等地也相继出现世界上
It is well-known that environmental pollution of arsenic is a serious public health problem. In particular, chronic endemic arsenism (Endemicarsense) caused by low concentrations of long-term arsenic exposure occurs in many countries. China is the world’s arsenic-bearing large country, except for the well-known epidemic area of foot-cold southern Taiwan, Xinjiang, Guizhou, Inner Mongolia and Shanxi have also appeared in the world