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目的了解易县居民饮用水中碘、氟和砷含量,为地方病防治提供依据。方法按《河北省居民生活饮用水水碘、水氟、水砷分布调查方案》开展调查,调查范围为全县27个乡镇,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。水中碘检测采用碘的砷铈催化分光光度法测定(WS/T107-2006),水中氟和砷检测采用生活饮用水标准检验方法(GB/T 5750.5-2006)测定。结果全县共检测水样1 024份,居民饮用水中碘含量为(2.22±1.49)μg/L,氟含量为(0.26±0.12)mg/L,砷含量为(0.002±0.001)mg/L。结论易县为碘缺乏地区,不容易出现地方性氟中毒流行,不会出现地方性砷中毒病区,今后地方病防治工作重点仍是碘缺乏病。
Objective To understand the contents of iodine, fluorine and arsenic in drinking water of Yixian residents and provide basis for prevention and control of endemic diseases. Methods According to Survey Plan of Water Iodine, Water Fluoride and Water Arsenic in Drinking Water of Hebei Province, the investigation scope was 27 villages and towns in the whole county, taking the administrative village as a unit, Extract and collect 1 part of peripheral water. For decentralized water supply villages, such as villages with less than 5 water sources, all samples are tested. For instance, villages with more than 5 water sources will randomly select 5 drinking water samples from residents according to the five directions of east, west, south, north and south. Determination of iodine in water by arsenic and cerium catalytic spectrophotometry (WS / T107-2006), fluorine and arsenic in water by the standard test method for drinking water (GB / T 5750.5-2006) determination. Results A total of 1 024 samples were tested in the county. The iodine content in drinking water was (2.22 ± 1.49) μg / L, the fluoride content was (0.26 ± 0.12) mg / L and the arsenic content was (0.002 ± 0.001) mg / L . Conclusion Yixian is an iodine deficient area, endemic fluorosis is not prone to epidemics, and endemic arsenism is not seen in endemic areas. In the future, the focus of prevention and treatment of endemic diseases is still iodine deficiency.