《Environmental Monitoring and Assessment》杂志刊登“巴西东北部地方性氟中毒区域地下水水质评价”

作者：Consuelo Fernanda Macedo de Souza, José Ferreira Lima Jr, Maria Soraya Pereira Franco Adriano, Fabíola Galbiatti de Carvalho, Franklin Delano Soares Forte, Rosimere de Farias Oliveira, Alexandre Pessoa Silva, Fábio Correia Sampaio

刊物：《Environmental Monitoring and Assessment》，2013年6月，卷185，第6期，4735－4743页

关键词：氟化物；钙；龋齿；氟中毒；水质

摘要：本研究的目的是根据选定地区地下水水质的钙/氟的浓度比，评估荒漠化地区的龋齿和氟中毒的风险。选取位于巴西热带半干旱地区的里约热内卢作为研究区域，共收集了111份水样，氟浓度从0.11mg/L到9.33mg/L不等。其中，有30%的样品的氟浓度在1.5mg/L以上，64%的样品氟浓度高于理想上限0.7mg/L。钙的平均浓度为47.6 mg/L，其中14.4%的样品浓度符合世界卫生组织的标准。水中钙/氟的比例显示，只有12%的样品能够预防龋齿和氟斑牙的发生。氟的分布情况表明，大约2465人可能会受氟斑牙的困扰，而1057人可能会得氟骨症。由此可以得出结论，氟是一个非常有用的饮用水水质指标，但氟浓度仅能表明氟中毒的高风险区，而钙/氟的分布图可以反映发生龋齿的地区分布情况。这种方法有助于当地卫生部门确定龋齿或氟斑牙的频发地区范围。

Assessment of groundwater quality in a region of endemic fluorosis in the northeast of Brazil

Authors: Consuelo Fernanda Macedo de Souza, José Ferreira Lima Jr, Maria Soraya Pereira Franco Adriano, Fabíola Galbiatti de Carvalho, Franklin Delano Soares Forte, Rosimere de Farias Oliveira, Alexandre Pessoa Silva, Fábio Correia Sampaio

Journal: Environmental Monitoring and Assessment, June 2013, Volume 185, Issue 6, Pages 4735-4743

Key word: Fluoride; Calcium; Dental caries; Fluorosis; Water quality

Abstract: The aim of this study was to estimate the risk for caries and fluorosis in a desertification area, applying the calcium/fluoride concentration ratio of underground water and the quality of water in a selected geographical region. This study was performed in the municipality of São João do Rio do Peixe, located in the tropical semiarid lands of Brazil. A total of 111 groundwater samples were collected. Fluoride concentration varied from 0.11 to 9.33 mg/L. Thirty percent of all samples analyzed showed values above 1.5 mg/L, while 64 % were above the ideal limit of 0.7 mg/L. Mean calcium concentration was 47.6 mg/L, and 14.4 % of all samples presented values above the WHO acceptable limits. The proportional value of calcium/fluoride in water showed that only 12 % of the samples were suitable for dental caries prevention with minimal risk for dental fluorosis. Mapping of the fluoride distribution indicated that approximately 2,465 people could be affected by dental fluorosis and 1,057 people might be affected by skeletal fluorosis. It can be concluded that, in addition to fluoride, many water parameters were not suitable for the drinking water. Mapping out calcium/fluoride ratio may indicate areas of water suitability for caries control, whereas the fluoride concentration solely can indicate the areas with the risk for fluorosis. This approach can be relevant for health authorities for identifying communities where dental caries or dental fluorosis is prevalent.

原文链接：http://link.springer.com/article/10.1007/s10661-012-2900-x