التفاصيل البيبلوغرافية
| العنوان: |
Fluoride-leaching simulation of aquifer sediment and its influence on groundwater fluoride levels along coastal plains. |
| المؤلفون: |
Jia, C. P., Chen, Q., An, M. G., Zhi, C. L., Lou, S. W., Zhang, P. P., Li, Q. C., Zhang, Y. M., Han, S. Y., Zheng, H. T. |
| المصدر: |
Water Supply; 4/1/2022, Vol. 22 Issue 4, p4133-4141, 9p |
| مصطلحات موضوعية: |
COASTAL plains, WATER table, AQUIFERS, SEDIMENTS, SALTWATER encroachment, FLUOROSIS |
| مصطلحات جغرافية: |
SHANDONG Sheng (China), CHINA |
| مستخلص: |
Seawater intrusion and drinking-water fluorosis are frequently documented along coastal plains. Groundwater is characterized by high OH-, Naþ, total dissolved solids, and low Ca2+ because of seawater intrusion, and such conditions favor sediment fluoride-leaching and fluorosis. But the geological process of seawater intrusion has not been noticed when high-fluoride groundwater along coastal areas is discussed. The groundwater and sediments in a typical seawater intrusion and fluorosis area are gained, and fluoride-leaching simulation experiments are performed. Sediment fluoride levels are equal to or lower than average sediment fluoride levels in China and Shandong province, but strong fluoride-leaching in aquifers is observed. Compared with the supplied water from the non-intruded neighboring area, the local groundwater has higher fluoride levels, together with higher pH, total dissolved solids, HCO3-, Cl-, Br-, SO42-, Na+, K+, and low Ca2+ because of seawater intrusion. Aquifer sediment fluoride-leaching ability increases with an increase in seawater (brine water) mixing ratios, and NaCl or NaHCO3 levels, but with a decrease in CaCl2 levels. This directly confirms that seawater (brine water) intrusion promotes sediment fluoride-leaching, and the high pH, Na+, HCO3-, and low Ca2+ levels caused by seawater intrusion are responsible for the high-fluoride groundwater along coastal plains. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
