内蒙古托克托县地区浅层地下水氟化物与土壤水溶性氟的相关性研究

干旱区研究 ›› 2019, Vol. 36 ›› Issue (6): 1351-1358.

内蒙古托克托县地区浅层地下水氟化物与土壤水溶性氟的相关性研究

李政葵¹，董少刚¹，张涛²，王超¹，刘晓波¹

1. 内蒙古大学生态与环境学院，内蒙古呼和浩特 010021； 2. 呼和浩特市环境科学研究所，内蒙古呼和浩特 010010

收稿日期:2019-01-15 修回日期:2019-03-07 出版日期:2019-11-15 发布日期:2019-11-15
通讯作者: 董少刚
作者简介:李政葵（1991-），男，硕士，主要从事地下水污染与防治方向研究，E-mail:sniclee@foxmail.com
基金资助:
国家自然科学基金（41562020，41702250，41002129）；内蒙古自治区自然科学基金（2018MS04004）；内蒙古自治区研究生科研创新项目（10000-16010109-29）资助

Correlation between Fluoride in Shallow Groundwater and Water-Soluble Fluoride in Soil in Togtoh County, Inner Mongolia

LI Zheng-kui¹, DONG Shao-gang¹, ZHANG Tao², WANG Chao¹, LIU Xiao-bo¹

1. College of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China;
2. Hohhot Institute of Environmental Science, Hohhot 010010, Inner Mongolia, China

Received:2019-01-15 Revised:2019-03-07 Online:2019-11-15 Published:2019-11-15

摘要/Abstract

摘要：

以内蒙古托克托县地区为研究对象，通过系统采集浅层地下水和土壤样品，分析研究区浅层地下水和土壤中氟化物的赋存分布规律及其相关性。结果表明：托克托县地区浅层地下水氟的最低浓度为0.15 mg·L^-1，最高浓度为7.00 mg·L^-1，平均值为2.10 mg·L^-1。研究区的绝大部分地区浅层地下水中氟含量大于1.00 mg·L^-1，已不宜作为生活饮用水源。整体表现为东南部湖积台地地下水氟含量要高于西北部冲湖积平原地区。在低TH（总硬度）、偏碱性的浅层地下水环境中，Ca²⁺的活度会降低，有利于F^-在地下水中的富集。浅层地下水中氟与土壤水溶性氟的空间浓度分布特征具有较高的相似性，湖积台地及蛮汉山前地带沉积的富氟矿物，是本区土壤和浅层地下水中氟化物的主要来源。

关键词: 地下水, 氟化物, 赋存规律, 土壤可溶性氟, 托克托县, 内蒙古

Abstract:

The shallow groundwater and soil samples were collected from Togtoh County of Inner Mongolia to analyze the distribution and correlation of fluoride in shallow groundwater and soil there. The results showed that the minimum and maximum values of fluoride concentration in shallow groundwater in the study area were 0.15 mg·L^-1 and 7.00 mg·L^-1 respectively, and the average value was 2.10 mg·L^-1. Most values of the fluorine concentration in shallow groundwater were higher than 1.00 mg·L^-1, and the shallow groundwater in most regions in the county was not suitable as the source of drinking water. Holistically, the concentration of fluoride in shallow groundwater in the lacustrine platform in the southeast was higher than that in the alluvial plain in the northwest. The activity of Ca²⁺ in the shallow groundwater environment with low TH(total hardness) value and alkalescence could decrease and be conducive to the enrichment of F^- in shallow groundwater. The spatial distribution of fluoride in shallow groundwater was quite similar to that of water-soluble fluorine in soil. A large amount of fluorine-rich minerals deposited in the lacustrine platform and the piedmont of the Manhan Mountain were the important sources of fluoride in soil and shallow groundwater in this area.

Key words: groundwater; fluoride, occurrence regularity, water-soluble fluorine, Togtoh County, Inner Mongolia

李政葵, 董少刚, 张涛, 王超, 刘晓波. 内蒙古托克托县地区浅层地下水氟化物与土壤水溶性氟的相关性研究[J]. 干旱区研究, 2019, 36(6): 1351-1358.

LI Zheng-kui, DONG Shao-gang, ZHANG Tao, WANG Chao, LIU Xiao-bo. Correlation between Fluoride in Shallow Groundwater and Water-Soluble Fluoride in Soil in Togtoh County, Inner Mongolia[J]. Arid Zone Research, 2019, 36(6): 1351-1358.

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