|Table of Contents|

Evolution Feature and Gensis of Fluoride Groundwater in Shallow Aquifer from North China Plain(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2012年第04期
Page:
57-67
Research Field:
水资源与环境
Publishing date:

Info

Title:
Evolution Feature and Gensis of Fluoride Groundwater in Shallow Aquifer from North China Plain
Author(s):
XING Li-na1; 2;  GUO Hua-ming1; 2;  WEI Liang2;  ZHAN Yan-hong1; 2;  HOU Chun-tang3;  LI Rui-min4;  WANG Yi4
1. State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Beijing 100083, China; 2. School of Water Resources and Environment, China University of Geosciences,Beijing 100083, China; 3. Institute of Geo-mechanics, Chinese Academy of Geological Sciences, Beijing 100037, China; 4. China Institute of Geo-environment Monitoring, Beijing 100081, China
Keywords:
groundwater;  fluoride;  hydrogeochemistry;  spacial distribution;  evolution feature;  hydrochemical characteristic;  gensis;  North China Plain
PACS:
P641.3
DOI:
-
Abstract:
Fluoride groundwater in shallow aquifer from North China Plain was taken as the object of study. Based on historic data, field hydrogeological investigation and groundwater sample analysis, spatial distributions of F- concentrations at the historical stage(1980-1985)and the present stage(2005-2010)were compared, and spatial distribution, evolution feature and gensis of fluoride groundwater in shallow aquifer from North China Plain were discussed by means of hydrogeochemical plot, statistic analysis and geochemical modeling. The results showed that compared with the historical stage, the area of groundwater with high F- concentration at the present stage significantly increased; North China Plain could be divided into alluvial-pluvial fans in the piedmont area(recharge area, Zone Ⅰ), alluvial-lacustrine plain in the central area(slow runoff area, Zone Ⅱ)and alluvial-marine plain in the coastal area(discharge area, Zone Ⅲ); F- concentration of groundwater in shallow aquifer increased from Zone Ⅰ to Zone Ⅱ, and then declined from Zone Ⅱ to Zone Ⅲ; hydrochemical types of groundwater with high F- concentration were relatively complex, soda alkaline water enriched in HCO-3 and Na+ was conducive to F- enrichment, but Ca2+ and Mg2+ inhibited F- enrichment; gensis of groundwater with high F- concentration was closely related to the aquifer condition and F- transportation; F- concentrations of groundwater were mainly controlled by fluorite dissolution and F- desorption in Zone Ⅰ, by evaporation-concentration, fluorite dissolution, calcite-dolomite precipitation and F- desorption in Zone Ⅱ, and by calcite-dolomite precipitation, F- desorption and cation exchange sorption in Zone Ⅲ.

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Last Update: 2012-12-20