论文部分内容阅读
目的了解河北省易县不同水源饮用水水碘含量,为碘缺乏病防治提供科学依据。方法按《河北省居民生活饮用水水碘分布调查方案》对不同水源饮用水水碘含量开展调查。以行政村为单位,对集中供水的村,每个调查村随机抽取并采集1份末梢水。对分散式供水的村,如水源少于5个的村,全部采样检测;如水源多于5个的村,按东、西、南、北、中5个方位随机抽取5户居民饮用水水样。水碘检测采用碘的砷铈催化分光光度测定法。结果检测家用井水水样742份,水碘含量为(2.26±1.48)μg/L;检测自来水水样228份,水碘含量为(2.40±1.53)μg/L;检测山泉水水样54份,水碘含量为(0.93±0.61)μg/L。不同水源水碘含量比较,差异有统计学意义(F=23.11,P<0.01)。自来水与家用井水水碘含量比较,差异无统计学意义(q=1.79,P>0.05)。山泉水与家用井水和自来水水碘含量分别比较,山泉水低于家用井水和自来水(q=9.14、9.41,均P<0.01)。结论易县不同水源水碘含量均很低,由于山泉水水碘含量最低,所以今后碘缺乏病干预的重点应是山区。
Objective To understand the water iodine content of drinking water in different sources in Yixian County, Hebei Province, and to provide a scientific basis for the prevention and treatment of iodine deficiency disorders. Methods The water iodine content of drinking water in different water sources was investigated according to “Investigation Plan of Water Iodine Distribution in Drinking Water of Hebei Province”. In the administrative village as a unit, a centralized water supply village, each survey village randomly selected and collected a peripheral water. For villages with decentralized water supply, such as villages with less than 5 water sources, all samples should be sampled and tested. For villages with more than 5 water sources, 5 households of drinking water were randomly selected according to east, west, south, north and south directions kind. Determination of iodine in water by iodine by catalytic spectrophotometry with arsenic and. Results A total of 742 well water samples were collected and the water iodine content was (2.26 ± 1.48) μg / L. A total of 228 tap water samples were collected, and the water iodine content was (2.40 ± 1.53) μg / L. , Water iodine content (0.93 ± 0.61) μg / L. The difference of iodine content in different water sources was statistically significant (F = 23.11, P <0.01). Tap water and household water water iodine content, the difference was not statistically significant (q = 1.79, P> 0.05). Mountain spring water and household well water and tap water iodine content were compared, spring water is lower than domestic well water and tap water (q = 9.14,9.41, both P <0.01). Conclusion The iodine content of different source water in Yixian County is very low. Due to the lowest iodine content in spring water and water, the focus of future iodine deficiency disorders intervention should be mountainous areas.