摘要
目的掌握甘肃省集中式供水水源碘含量的范围和分布，为制订适合的防控措施提供依据。方法在全省87个县（市、区）采集所有不同水源的集中式供水工程出厂水2份，采用硫酸铈催化分光光度法（国家碘缺乏病参照实验室推荐方法）进行水碘含量测定。分析不同水源类型、不同井深水碘含量之间的关系。结果共采集1563份集中式供水工程水样，水碘中位数为6．38μg／L，范围为0．00～182．10IXg／L，水碘含量〈10、10～〈50、50～〈100、100～〈150和≥150μg／L的比例分别为62．0％（969／1563）、30．1％（471／1563）、6．9％（108／1563）、0．5％（7／1563）和0．5％（8／1563）；地面水和地下水分别占26．7％（418／1563）和73．3％（1145／1563），水碘中位数分别为4．42、8．10μg／L，地面水水碘明显低于地下水（Z=-10．089，P〈0．01）；地面水中江河、湖泊、水库和其他水源的比例分别为55．7％（233／418）、7．7％（32／418）、21．5％（90／418）和15．1％（63／418），水碘中位数分别为2．52、31．10、6．65和5．40斗g／L，不同水源来源地面水碘含量比较差异有统计学意义（Х^2=179．976，P〈0．01）。地下水深井、浅井和泉水分别占55．5％（635／l145），41．3％（473／1145）和3．2％（37／1145），水碘中位数分别为17．90、3．66和4．18μg／L，不同水源来源地下水水碘含量比较差异有统计学意义（Х^2=357．346，P〈0．01），不同井深水碘含量比较差异有统计学意义（x。=288．959，P〈0．01），水碘含量与井深呈正相关（r=0．364，P〈0．01）。结论甘肃省水源类型较多，地面水水碘含量普遍低，地下水中深井水水碘含量相对高，局部地区存在高碘深井水，建议将水碘纳入人群碘营养评估指标。
Objective To investigate the scope and distribution of water iodine in centralized water supply projects, and provide a basis for taking appropriate control measures in Gansu Province. Methods Collected 2 copies of water samples of all the different water supply of centralized water supply project water in the province＇s 87 counties （cities, districts）, the source water iodine of all centralized water supply projects was tested by the method of cerium sulfate catalytic spectrophotometry. The relationship between different water types and different iodine levels in deep well water were analyzed. Results Of the total 1 563 centralized water supply projects, the median of water iodine was 6.38 ~Lg/L, the range was 0.00 - 182.10 I.Lg/L, the rates were 62.0% （969/1 563）, 30.1% （471/1 563）, 6.9% （108/1 563）, 0.5% （7/1 563） and 0.5% （8/1 563） in water iodine level of 〈 10, 10 - 〈 50, 50 - 〈 100, 100 - 〈 150 and ~〉 150 Ixg/L. The surface water was 26.7% （418/1 563）, the median of water iodine was 4.42 p.g/L, the groundwater was 73.3%（1 145/1 563）, the median of water iodine was 8.10 p,g/L, the iodine content of surface water was lower than that of the groundwater （Z = - 10.089, P 〈 0.01）; in surface water, the rate of river, lake, reservoir and other water source was 55.7% （233/418）, 7.7% （32/418）, 21.5% （90/418） and 15.1% （63/418）, and the median was 2.52, 31.10, 6.65 and 5.40μg/L, the iodine content between surface water and water sources of different water sources was significant different （Х^2 = 179.976, P 〈 0.01）; in the groundwater, the rate of deep well, shallow well and spring was 55.5% （635/1 145）, 41.3% （473/1 145） and 3.2% （37/1 145）, and the median was 17.90, 3.66 and 4.18 μg/l the iodine content in groundwater from different sources was significant different （Х^2= 357.346, P 〈 0.01）. Iodine content of different well depth was significantly different （Х^2 = 288.959,P 〈 0.01）, there was a positive correlation between iodine content and well depth （r = 0.364,P 〈 0.01） . Conclusions Iodine content of the surface water is generally lower in many water types in Gansu, iodine content is higher in deep well, and there is high iodine deep welt water in local areas. It is recommended that water iodine be included in the population iodine nutrition assessment index.
出处
《中华地方病学杂志》
CSCD
北大核心
2017年第10期754-757,共4页
Chinese Journal of Endemiology
关键词
碘
集中供水
数据收集
Iodine
Centralized water supply
Data collection
