%0 Journal Article %A Chavoshi, E. %A Afyuni, M. %A Hajabbasi, M. A. %T Simulation of Fluoride Transport in a Calcareous Soil Using HYDRUS-1D %J Journal of Water and Soil Science %V 19 %N 72 %U http://jstnar.iut.ac.ir/article-1-3075-en.html %R 10.18869/acadpub.jstnar.19.72.18 %D 2015 %K Fluoride, model, HYDRUS-1D, calcareous soil., %X Transport of fluoride and consumption of groundwater with excess fluoride concentrations poses a health threat to millions of people around the world. The objective of this study was to simulate transport of fluoride (F) using HYDRUS-1D model. The study was conducted in lysimeters at Lavark research station site in Isfahan. The treatments consisted of two concentrations of F (157 and 315 mg kg-1). The duration of the study was 125 days. Some of soil physical and chemical properties, soluble F and total F concentration were determined during the study. The results showed the transport of F in calcareous soil profiles. This may be due to the high pH and desorption of F ion as a result of repulsion by the more negatively charged soil surfaces. The highest concentration of total F and water soluble F were observed in the 10 cm surface soil layer. The concentration of F decreased with increased soil depth. The correlation coefficient was significant between the water soluble fluoride and the total fluoride (1% level). Also, the difference between the observed t- value and a critical value on the t distribution is statistically insignificant. It showed that the model simulated successfully water soluble F concentration in the soil profile. %> http://jstnar.iut.ac.ir/article-1-3075-en.pdf %P 205-216 %& 205 %! %9 Research %L A-10-1-132 %+ 1. Dept. of Soil Sci., Collage of Agric., Isfahan (Khorasgan) Branch, Islamic Azad Univ., Isfahan, Iran. %G eng %@ 2476-3594 %[ 2015