摘要
目的了解山东省西北地区水源性高碘地区分布和居民食用盐现状,为调整碘盐供应区域提供决策依据。方法采用横断面调查方法,在每个被调查县(市、区)乡镇按照东、西、南、北、中5个不同方位各抽取5个村庄,每个村庄采集饮用水样2份检测饮水含碘量,采集5户居民家中食用盐样检测盐碘,调查饮水类型及水井深度。结果共调查了3个市的21个县(市、区)的279个乡镇,共采集检测居民饮水样本2852份,水碘中位数为125.40μg/L(0.50～1820.03μg/L);居民户碘盐覆盖率为95.1%;在279个乡镇中有121个是高碘地区(病区),受累人口516.69万。其水碘中位数为235.86μg/L(150.05～1820.03μg/L),碘盐覆盖率96.0%。高碘地区全部处于黄河以北黄河冲积平原,呈片状分布,与河南、河北的高碘地区相连成片。西南部地区的高碘水几乎都是浅层,西北部的高碘水则以深层居多。高碘水的含碘量与水井深度呈正相关。结论鲁西北黄河冲积平原存在既有浅井高碘水又有深井高碘水的独特现象,有121个高碘地区,碘盐覆盖率96.0%。这些地区应停供碘盐,开展健康教育、水碘和碘盐监测工作。
Objective To investigate the present conditions of iodine excess areas and edible salt at household levels in northwest Shandong,which will provide the evidence for adjusting iodized salt supply in these areas. Methods Using cross section method, an epidemiological survey was carried out in 21 counties in directions of east, west, south, north and center of every township. 2 samples of drinking water from each village were tested for their water iodine contents as well as the data regarding to the type and the depth of the wells. 5 samples of edible salt were collected in each village for quantitative analysis. Results For 2 858 samples of water surveyed among 279 townships in 21 counties, a median of iodine 125.40 μg/L （0.50 - 1 820.03μg/L）and a rate of iodized salt coverage of 95.1% were detected. Nearly 5.166 9 million people were at risk of excessive iodine in 121 townships of 19 counties where iodine concentration was over 150μg/L in drinking water with a median of 235.86μg/L （150.05 - 1820.03 μg/L）. There were 121 iodine excess areas in 279 townships. The rate of iodized salt was 96.0%. All the excessive iodine excess areas located in alluvial plain north of Yellow river, which mainly connected with same iodine excess areas in Henan,Hebei provinces. Water of high content iodine existed in shallow depth in the northeast area, while it did in deep depth in the southeast area. There was a positive relationship between content of high iodine water and its depth of well. Conclusions There are distinctive features of iodine excess for both shallow well and deep well. 121 iodine excess areas exist in the regions. It＇s suggested that iodized salt intervention should be stopped in the areas and the health education project be started and iodized salt or water iodine in the region be surveyed.
出处
《中国地方病学杂志》
CAS
CSCD
北大核心
2005年第5期543-546,共4页
Chinese Jouranl of Endemiology
基金
国家自然科学基金重点项目(30230330)
国际控制碘缺乏病理事会(ICCIDD)
卫生部疾控司资助项目(2003)
关键词
水碘
过量
分布
碘盐
Water iodine
Excess
Distribution
Iodized salt
