北京市地方性砷中毒分布调查

Study on endemic arsenism distribution in Beijing

目的 了解北京地区是否存在地方性砷中毒 ,以及历史曾有高砷报道的顺义区地方性砷中毒现状。方法 在全市 10个远郊区县进行饮用水井水砷含量的调查 ,并在历史高砷地区进行砷中毒情况调查。结果 北京市 10个远郊区县除顺义外 ,水砷含量均小于 0 0 5mg/L。全市的超标率为 1 6 2 %。顺义地区的水砷含量超标率为 8 0 6 % ,最高浓度为 0 14 3mg/L。未发现砷中毒患者。结论 北京市未发现饮水型砷中毒病区和砷中毒患者 ,但仍有潜在型病区存在。

Objective To determine whether there are endemic arsenism in Beijing and to study the prevalence of historic high-level endemic arsenism in Shunyi. Methods To investigate the concentration of arsenic in drinking water and well water in ten rural counties of Beijing and perform investigations on the distribution of drink-water type endemic arsenism in historically high-level arsenism area. Results Except for Shunyi,the concentration of arsenic in water is below 0.05?mg/L in the rural areas of Beijing.The rate that the content of arsenic in water is higher than given standards in Shunyi.The rate above standands is 8.06%,while the highest concentration is 0.143?mg/L.Arsenism patients are not found. Conclusion Drinking-water type endemic arsenism area and arsenism patients are not found in Beijing,but there are latent endemic areas in Beijing.