摘要目的 调查湖北省洪湖市高砷水源分布情况,为地方性砷中毒(简称地砷病)的防治工作提供依据.方法 2006-2007年,以仙桃市沙湖镇附近的乡(镇、管理区)为重点,即在东荆河流域、内荆河流域、长江流域共22个乡(镇、管理区),68个自然村进行筛查.每个自然村按水井数的10%抽取水样,每年抽取1000份水样.使用水砷快速检测试剂盒进行半定量检测,对≥0.03 mg/L的水样用国标法进行复核,同时选择超标水井数和超标值较高的村(队)进行病情调查.结果 2006-2007年共筛查了68个自然村2000份水样,共有48个自然村401份水样超标,超标率为20.05%(401/2000),水砷最高为0.71 mg/L.高砷水源多分布于东荆河流域与内荆河流域,但病情调查未发现地砷病病人.结论 高砷水源主要分布于东荆河流域与内荆河流域,建议相关部门切实做好改水工作,使高砷区的居民吃上安全水.

abstractsObjective To investigate the distribution of high-arsenic drinking water in Honghu city of Hubei province in order to provide a scientific basis for prevention and control of endemic arsenic disease.Methods Investigations were made in 22 townships(towns,districts),68 natural villages of the drainage areas of the Dongjing River,the Neijing River and the Yangtse River in 2006 and 2007,with the townships(towns,districts)around Shahu town in Xiantao city as the focal point.1000 water samples were drawn each year,which was 10% of all the wells in every natural village.Using sampling investigation,water arsenic Was determined by half-quantitative fast reagent kit.All samples of water with arsenic exceeding the standard(≥0.03 mg/L)were re-determined according to state standard.Surveys on the disease was carried out in the villages(brigades)where arsenic exceeded the standard.Results A total of 2000 samples were surveyed from 68 natural villages,of which there were 401 samples from 48 villages exceeding the standard in a rate of 20.05%(401/2000).The highest arsenic content Was 0.71 mg/L.The high arsenic water sources were distributed mainy in the drainage areas of the Dongjing River and the Neijing River,but no patients with endemic arsenic disease were found.Conclusions The high arsenic water sources are distributed mainly in the drainage areas of the Dongjing River and the Neijing River.It is suggested that the interrelated government departments should take precise measures to impmve the quality of drinking water and ensure safe water to the residents in high arsenic areas.