大连市浅层地下水中氟的空间分布及其特征分析

摘要

氟作为人体内必不可少的一种化学元素,其在自然生态环境中广泛存在.文章通过对辽宁省大连市某研究区浅层地下水中的氟离子空间变异性及分布特征进行分析,结果表明,该地区浅层地下水中氟离子含量严重超标.经测定,氟离子含量超标率高达8.5%,且浅层地下水中的氟离子分布呈现出一定的变异性特征.这种变异性主要由研究区大尺度空间这一因素导致,但影响程度不明显,少部分研究区域的氟离子含量及浓度超过国家技术检测标准.因此,该研究区需针对氟浓度严重超标的高氟区进行合理控制.%Fluorine exists widely in natural ecological environment as a kind of chemical element necessary to the human body.The paper analyzed the special variability and distribution characteristics of fluorinion in shallow groundwater of the study area of Dalian City in Liaoning Province,the results show that the contents of fluorinion in shallow groundwater exceeded seriously the limits of the area.The over limit rate of fluorinion has been 8.5% by measuring and a certain of variability has been appeared in distribution of fluorinion in shallow groundwater.This kind of variability was caused mainly by large scale space in study area,however,the effected degree was not obvious,the contents and concentration of fluorinion have exceeded the technological detection standard in a part of study area.Therefore,the study area should be reasonably controlled for the high fluoride concentration of fluoride concentration.