摘要
目的调查河北省居民饮用水高碘水源地理分布，划定河北省高碘区域。方法在河北省11个市的173个县（市、区）中，以乡（镇）为单位，按东、西、南、北、中5个方位选取5个村，当每个村的水源数量超过5个时，再按东、西、南、北、中各采1份水样；当水源数量少于5个时，采集全部水样；如遇集中供水，每村仅采1份水样。水碘测定采用砷铈接触法。结果全省共调查了2049个乡（镇），检测水样19352份，查出高碘乡172个。水碘范围为0．1～2840．4μg／L，其中水碘中位数〈150．0μg/L的水样为18358份，占94．86％；150．0．〈300．0μg／L的水样为565份，占2．92％；≥300．0μg／L的水样为429份，占2．22％。水碘中位数150．0～〈300．0μg／L的乡（镇）110个，≥300．0μg／L的乡（镇）62个。高碘乡分布在河北省6个市的33个县中。涉及人口5854960人。沧州市高碘水源大多为深井水，井深与水碘量呈正相关（r=0．430，P〈0．01）。邯郸、邢台、衡水市多为浅井水，井深与水碘无相关性（r值分别为-0．060、-0．119、-0．121，P〉0．05）。结论河北省6个市有高碘水源，主要集中于邯郸、邢台、衡水和沧州市。高碘水源所在地均处于地势低平地区。水源全部是地下水．高碘乡（镇）多数呈片状，少数以点状分布。
Objective To investigate the geographical distribution of excessive iodine in drinking water and to demarcate the excessive iodine regions in Hebei Province. Methods In 173 counties of Hebei Province, town was surveyed as an elementary unit. Five villages were sampled according to the direction of east, west, south, north, center in every town. If the water sources were more than 5 in a village, water was sampled according to the direction of east, west, south, north, center, respectively; If the water sources were less than 5 in a village, all were sampled; If the village used water of cental supply, only one sample was collected. Arsenic-cerium catalysis was used to determine the iodine concentration of drinking water. Results Two thousands and forty-nine towns were investigated and 19 352 water samples were determined in Hebei Province. One hundred and seventy- two towns were confirmed to be excessive iodine areas, where the range of water iodine was 0.1 - 2840.4 μg/L. The water sample with 18 358 had a water iodine median less than 150.0 μg/L. The areas with water iodine median less than 150.0 μg/L, in between 150.0 μg/L and less than 300.0 μg/L, and equal to or more than 300.0 μg/L accounted for 94.86% ,2.92% and 2.22%, respectively. There were 110 towns with water iodine median being between 150.0 μg/L and less than 300.0 μg/L and 62 towns with water iodine median equal to or more than 300 μg/L. Excessive iodine towns distributed in 33 counties of 6 cities involving 5 854 960 residents in Hebei Province. Most of the water sources with excessive iodine Cangzhou were deep wells and there was a positive correlation between well depth and water iodine concentration （r = 0.430, P 〈 0.01 ）, while they were shallow wells in Handan, Xingtai, Hengshui, and no correlation was found between well depth and water iodine concentration（r = - 0.060, - 0.119, - 0.121, P 〉 0.05）. Conclusions Six cities have excessive iodine water resources in Hebei Province, mostly in Handan, Xingtai, Hengshui and Cangzhou Cities, which all are low-lying land. The water with excessive iodine is hypogene, and the towns with excessive iodine water distributein patchy or spot pattern.
出处
《中国地方病学杂志》
CAS
CSCD
北大核心
2008年第5期538-540,共3页
Chinese Jouranl of Endemiology
基金
河北省卫生厅资助项目（04143）
关键词
饮水
碘
地理分布
Drinking water
Iodine
Geographical distribution
