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目的了解易县不同区域居民饮用水水碘含量,为因地制宜防治碘缺乏病提供资料。方法按《河北省居民生活饮用水水碘分布调查方案》在全县山地、丘陵和平原开展调查,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,全部采样检测,如水源多于5个,按东、西、南、北、中5个方位随机抽取5户居民饮用水水样。水碘检测采用水中碘的砷铈催化分光光度法测定。结果山地检测水样490份,居民饮用水水碘含量为(1.92±1.24)μg/L;丘陵检测水样505份,水碘含量为(2.45±1.60)μg/L;平原检测水样29份,水碘含量为(3.53±1.97)μg/L,山地、丘陵、平原水碘含量比较,差异有统计学意义(P<0.01)。结论易县山地、丘陵及平原居民饮用水水碘含量均很低,均存在缺碘,今后仍应重视碘缺乏病防治工作,干预的重点依次是山地、丘陵、平原。
Objective To understand the drinking water iodine content of residents in different regions of Yi County and provide information for preventing and treating iodine deficiency disorders according to local conditions. Methods According to “Investigation Plan of Water and Water Iodine Distribution in Hebei Province for Drinking Water”, a survey was conducted on the mountainous, hilly and plain areas of the whole county. A sampling of 1 peripheral water For villages with decentralized water supply, if there are less than 5 water sources, all sampling and testing are conducted. For example, if there are more than 5 water sources, 5 household drinking water samples are randomly taken from 5 orientations: East, West, South, North and North. Determination of iodine in water by means of arsenic and cerium catalytic spectrophotometry. Results In the mountainous area, 490 samples of water samples were collected, and the iodine content in drinking water of residents was (1.92 ± 1.24) μg / L. There were 505 water samples in hills and 2.45 ± 1.60 μg / , Water iodine (3.53 ± 1.97) μg / L, and there was significant difference in iodine content in mountain, hills and plain water (P <0.01). Conclusion The iodine content of drinking water in mountainous areas, hills and plains of Yixian County is very low, both of which have iodine deficiency. In the future, attention should be paid to the prevention and control of iodine deficiency disorders. The key points of the intervention are mountain, hills and plains.