Sulphation of Topsoil in Hehua Village, Zhijin County, Guizhou Province

Abstract:

The endemic fluorosis in western Guizhou Province,southwest China was confirmed to be collected with high-content fluorine in topsoil (clay for coal-burning) of Hehua Village, Zhijin County,Guizhou Province ,which was considered to be closely associated with the long-term occurrence of endemic fluorosis. The new discovery in this article confirms that the mean value of apparent acidity of topsoil (pH_a) in this village is 4.92;The measured average value of total sulfate radical was 4465μg/g. In addition, the apparent acidity and the content of total sulfate were positively correlated (correlation coefficient:0.7920).The result shows that the topsoil in this village is acidic and may belong to sulphation.

• Periodical: Applied Mechanics and Materials (Volume 700)
• Pages: 360-363
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.700.360
• Online since: December 2014
• Authors: Xiu Ping Hong*, Jiang Wei Bai, Hong Jie Wang
• Keywords: Acidity, Endemic Fluorosis, Hehua Village, Sulphation, Topsoil

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