Spatial distribution and temporal variation of high fluoride contents in groundwater and prevalence of fluorosis in humans in Yuanmou County, Southwest China
Spatial distribution and temporal variation of high fluoride contents in groundwater and prevalence of fluorosis in humans in Yuanmou County, Southwest China
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DOI：
10.1016/j.jhazmat.2012.07.042
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发表时间：
2012-10-15
影响因子：
13.6
通讯作者：
Xu, Jianchu
中科院分区：
文献类型：
--
作者：
Chen, Huafang;Yan, Mei;Xu, Jianchu
1984年、2006年和2007年对元牟县所有村庄进行了连续调查，发现地下水氟化物含量超过1.0 mg/L的村庄有40个，并有相关的人氟中毒病例。利用这些调查数据和地理信息系统（GIS）技术，绘制了高氟化物水平和氟中毒病例图。结果表明，高氟浓度和氟中毒热点地区主要集中在元谋县中部的低地地区。高氟化物的空间分布主要由地质、干旱气候和地形决定。由于地方政府支持的一项低氟饮用水供应计划，牙齿和骨骼氟化症大幅减少。儿童氟牙症患病率由1984年的43.26%下降到2006年的21.97%，骨氟病由1984年的327例下降到2006年的148例。尽管氟中毒病例有所减少，但新地区氟中毒的出现表明，需要对受影响地区的饮用水进行持续监测，并提高公众认识。(C) 2012 Elsevier B.V.版权所有
Successive surveys conducted in 1984, 2006 and 2007, of all villages in Yuanmou County, China, highlighted 40 villages with groundwater fluoride levels higher than 1.0 mg/L and related cases of human fluorosis. Using the data from these surveys and by employing geographic information system (GIS) techniques, high fluoride levels and fluorosis cases were mapped. The results show high fluoride concentrations and fluorosis hotspots were found to be predominately located in the lowlands of central Yuanmou County. Spatial distribution of high fluoride levels was found to be primarily determined by geology, arid climate, and topography. Both dental and skeletal fluorosis had dramatically decreased due to a program of low-fluoride drinking water supply supported by local governments. The prevalence of dental fluorosis in children had dropped from 43.26% in 1984 to 21.97% in 2006, and the number of skeletal fluorosis cases had decreased from 327 in 1984 to 148 in 2006, respectively. Despite a decline in fluorosis cases, the emergence of fluorosis in new areas indicates the need for both continuous monitoring of drinking water in affected areas and increased public awareness. (C) 2012 Elsevier B.V. All rights reserved.