What is the most reliable method to determine gypsum content in soil samples?The method and reference?

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Jamal Elfaki

http://www.fao.org/docrep/t0323e/t0323e07.htm

Dilip Kumar Pal

Please refer to any Book on Soil Chemical Analysis. You may look in to the book of M.L.Jackson of 1973.

https://www.researchgate.net/publication/236941838_Refinement_of_the_Differential_Water_Loss_Method_for_Gypsum_Determination_in_Soils

Abdalla Elhagwa

please let me check since there are many methods for different types of soils.

Hussein Elarabi

Please read " Comparision of Different Methods of Gypsum Determination in Selected Soils from Isfahan

N. Yaghmaeian Mahabadi * , J. Givi "