Abstract
The features and advantages of chromatographic methods for investigating the complex water vapour sorption and desorption processes of soluble salts and mineral fertilizers were examined. Adsorption and absorption stages of the process were found, the sorption isotherms and chemisorption contributions were defined, the formation of a saturated solution film on the salt surface was demonstrated and the water desorption kinetics were studied. A chromatographic method for determining fertilizer moisture and hygroscopicity as quality characteristics was developed.
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