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砷广泛分布于自然界,主要经水进入到人类生活的环境中。在台湾省西南部海岸一带,已发现含砷浓度较高的自流井水造成了皮肤癌和黑脚病流行。1985年,又发现该地区居民患脏器癌症的死亡率极高,而且死亡率的增高与饮用含高浓度砷的自流井水有明显关系。台湾大学医学院的研究人员,根据1973～1986年对899811人一年的观察结果,分析了黑脚病地方性流行区居民的癌症死亡率。他们按饮水中的含砷量,将被调查居民分成砷含量<0.30、0.30～0.59和≥0.60
Arsenic is widely distributed in nature, mainly through the water into the environment of human life. In the coastal area of the southwestern coast of Taiwan Province, it has been found that artesian well water with high arsenic concentration causes skin cancer and dysentery epidemics. In 1985, the residents of the region were also found to have a very high mortality rate of organ cancer, and the increased mortality rate was clearly related to drinking artesian water containing high concentrations of arsenic. Researchers at National Taiwan University School of Medicine analyzed the cancer death rates among residents of endemic endemic toparkfoot on the basis of one year’s observation of 899,811 people from 1973 to 1986. According to their drinking arsenic content, they will be surveyed residents into arsenic content <0.30,0.30 ~ 0.59 and ≥ 0.60