Vol. 6, Issue 4 (2018)
Sorption of fluoride in some soils of varying phosphate status of West Bengal and Meghalaya
Author(s): Ambika Prasad Mishra, Swarbinay Mahanta, Purbasha Priyadarshini Padhi and Himadri Saha
Abstract: An investigation was carried out to generate information whether long term application of phosphate, often phosphate rocks, helps accommodation of fluoride in soils. Also a comparison was made between sorption-desorption of fluoride and phosphate. There was no evidence of build-up of soluble fluoride in soil. When phosphate status of the soil was low, fluoride showed sorption-desorption hysteresis. That is the desorption curve differed from the sorption curve. When the phosphate status of the soil was higher, this was not the case. It was speculated that the fluoride ion, being smaller, might have been able to penetrate pores blocked by previous reaction with phosphate, but this did not happen probably because of increased negative charge of the surface caused by the previous application of phosphate and this appeared to be more important cause of the decreased penetration than physical blocking of pores.
Pages: 3352-3358 | 732 Views 87 Downloads
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How to cite this article:
Ambika Prasad Mishra, Swarbinay Mahanta, Purbasha Priyadarshini Padhi, Himadri Saha. Sorption of fluoride in some soils of varying phosphate status of West Bengal and Meghalaya. Int J Chem Stud 2018;6(4):3352-3358.
