摘要
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 explore the iodine distribution in water in Guangxi,and provide basis for establishment of the database of water iodine. Methods The sampling sites were selected randomly in sequence of corporated village, incorporated village,township and county, according to the ratios of 1 ∶1, 4∶1 and 5∶1 respectively.In each surveyed corporated village,water samples for decentralized water supply system were collected from the east, west, south, north and central of village, for centralized water supply system collected from two families. A total of 26 704 water samples were collected from 14 187 corporated villages, 7 735 incorporated villages, 2 115 townships and 109 counties, for determination of iodine by water iodine detection kit. Results The iodine level in drinking water was 2.20 μg/L for median, and 6.47 μg/L for mean. The proportions of water samples with iodine level of 〈10 μg/L, 10~150 μg/L and 〉150 μg/L among total samples were 86.28%, 13.59% and0.13% respectively. Conclusion Most areas in Guangxi belong to the iodine deficiency areas. The iodine deficiency slightly improves from the northwest to the southeast of Guangxi. No high iodine area was found.
出处
《环境与健康杂志》
CAS
北大核心
2017年第7期612-614,共3页
Journal of Environment and Health
基金
2011-2014年中央补助广西公共卫生专项资金地方病防治项目
关键词
饮用水
水碘
缺碘地区
Drinking water
Iodine
Iodine deficiency areas
