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目的掌握广西外环境水碘分布状况,建立该地区水碘数据库。方法每个县区随机选择5个乡镇,每个乡镇随机选择4个行政村,每个行政村随机选择1个自然村作为监测点。分散式供水按“东西南北中”5个方位,各采集1份居民饮用水水样;集中式供水则选择2户,各采集1份末梢水水样。在全区109个县区的2 115个乡镇7 735个行政村14 187个自然村共采集26 704份水样,采用水碘检测试剂盒测定水碘浓度。结果水碘中位数为2.20μg/L,平均值为6.47μg/L。其中,水碘<10μg/L的水样占86.28%,10~150μg/L的占13.59%,>150μg/L的占0.13%。结论广西绝大部分区域属于缺碘地区,缺碘地区严重程度从西北向东南随地势倾斜稍有改善,未发现高碘地区。
Objective To understand the distribution of water iodine in Guangxi’s outer environment and to establish a database of water iodine in the area. Methods Five counties and towns were randomly selected in each county, four administrative villages were randomly selected in each township, and one natural village was randomly chosen as the monitoring point in each administrative village. Decentralized water press “East, West, North, South” in five directions, each collecting a sample of residents drinking water; centralized water is selected 2 households, each collecting 1 peripheral water samples. A total of 26,704 water samples were collected from 14,187 natural villages in 2,117 villages, 7,735 administrative villages in 109 districts and counties. Water iodine concentration was determined using the water iodine detection kit. Results The median water iodine was 2.20 μg / L with an average of 6.47 μg / L. Among them, water samples with water iodine <10μg / L accounted for 86.28%, 13.59% with 10-150μg / L and 0.13% with> 150μg / L. Conclusion Most areas in Guangxi belong to iodine deficiency areas. The severity of iodine deficiency areas slightly improved from northwest to southeast with the topography, and no high iodine areas were found.