加纳Gonja西部地区地下水中的氟化物及其影响

E. Arhin, M. Affam
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引用次数: 6

摘要

地下水中的氟化物含量可能导致氟牙釉质中毒或龋齿,这取决于它们在饮用时的浓度。研究表明,估计60%的氟化物摄入是通过饮用水(Selwitz等人,2007年)。对Gonja西部地区钻孔的地下水进行了氟化物分析。使用世界卫生组织(WHO)的(0.5-1)标准。以5 mg/l)为基准,结果显示浓度偏离世界卫生组织标准。在社区钻探的测试钻孔显示地下水中的氟化物含量分为三大类:<0.5mg/l(不足),0.5-1.5 mg/l(足够)和1.5 - 4.8mg/l(过量)。总体上,各区氟化物分布在0.1 ~ 4.8 mg/l之间。再次对氟化物浓度进行空间分析,预测氟中毒和龋齿疾病易发地区。结果表明,西部地区的大部分社区总体浓度较低,东部地区的社区浓度较高。对地下水中氟化物浓度的重新评价产生了西贡佳区地球化学地图集,根据允许的水平显示了氟化物浓度过高、充足和不足以及潜在的氟中毒或龋齿地区。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Fluoride in groundwater and its implications in west Gonja District of Ghana
Fluoride levels in groundwater may cause either enamel fluorosis or dental caries depending on their concentrations when consumed. Research has shown that an estimated 60 % of the total intake of fluoride is through drinking water (Selwitz et al, 2007). Boreholes sunk in the West Gonja district had their groundwater analyzed for fluoride. Using World Health Organisation (WHO) standard of (0.5-1. 5 mg/l) as basis, result revealed that concentration deviates from standard set by WHO. Test boreholes drilled in the communities showed three broad categorisations of fluoride levels in the groundwater as; <0.5mg/l (inadequate), 0.5-1.5 mg/l (adequate) and 1.5 – 4.8mg/l (excessive). Generally, the distribution in the district varied between 0.1 to 4.8 mg/l The concentration of fluoride was again spatially analysed to predict areas prone to fluorosis and dental caries diseases. The findings showed that most communities in the district within the western portion had generally low concentrations while those towards the east had elevated levels. The reappraisal of fluoride concentrations in groundwater resulted in the creation of geochemical atlas map of West Gonja District that showed the excessive, adequate and deficient concentrations of fluoride and potential fluorosis or dental caries localities based on the permissible levels.
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