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目的了解茂名市茂南区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依据。方法在全区的冲积平原和台地开展调查,据台地和河流的走向、地理位置等情况决定调查村,集中供水村随机抽取采集1份末梢水;分散式供水村按东、西、南、北、中随机抽取5户居民较多的饮用井水样,同时调查供水类型,记录水井的使用时间和井深。结果共调查饮用水220份,水碘中位数22.58μg/L,水碘含量<10μg/L占26.8%,10~100μg/L占52.7%,>100μg/L占20.5%。>100μg/L的均来自冲积平原的分散式水样(井水);冲积平原水碘含量分布较散,高碘低碘并存。水碘含量与井深呈负相关,与水井使用时间无相关性。结论茂南区东北部台地区域饮用水水碘含量普遍偏低,西北部冲积平原区域水碘含量总体较高。
Objective To understand the water iodine content of drinking water in different areas of Maonan Maoming, so as to provide the basis for the prevention and treatment of iodine deficiency disorders according to local conditions. Methods The survey was conducted on alluvial plain and platform in the whole region. According to the direction and geographical position of the platform and river, the investigation village was determined. A total of 1 peripheral water was collected randomly from the centralized water supply villages. The distributed water supply villages were divided into east, west, south and north , Randomly selected five drinking water samples of residents with more residents, while investigating the type of water supply, record the use of wells and well depth. Results A total of 220 drinking water samples were collected. The median of water iodine was 22.58μg / L. The water iodine content was less than 10μg / L, accounting for 26.8%, 10-100μg / L accounting for 52.7% and> 100μg / L accounting for 20.5%. > 100μg / L distributed water sample (well water), all from the alluvial plain. The iodine content in the alluvial plain water was more dispersed and iodine and iodine coexisted. Water iodine content and well depth was negatively correlated with the use of water wells no correlation. Conclusion The iodine content of drinking water in the northeast of Maonan district is generally low, and the iodine content in the alluvial plain in the northwestern region is generally high.