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The possibility of cesium content evaluation by the particle induced X-ray emission method from X-ray emission L-shell at sorption from water solutions has been investigated. Consideration has been given to the processes of dynamic cesium sorption by zeolites from water solutions. The technique has been developed for preparing targets analyzable in the proton beam of energy up to 2.0 MeV. The relationship has been determined between the cesium content and the intensity of X-ray emission L-shell.

The comparison of sorption capacity of clinoptilolite and synthetic zeolites (zeolite NaX and zeolite NaA) in relation to the cesium in dynamic conditions was conducted. Dynamic conditions include multiple circulation of cesium containing solution through the sorbent layer. The mathematical modeling of sorption isotherms using the Langmuir equation, the Chebyshev criterion, and the least-squares method was conducted. Correlation of actual and model results indicates that the considered models adequately reflect sorption processes occurring in zeolites. The results of the study make it possible to use the considered models for predicting the behavior of zeolites in relation to cesium.

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