Cesium sorption on tonalite and mica gneiss

摘要

Different approaches for measuring the interaction between radionuclides and rock matrix are needed to test the compatibility of transport models and retardation experiments. In this work sorption of cesium (~(134)Cs) was studied on unaltered mical gneiss, and on unaltered, moderately altered and strongly altered tonalie. The crushed rock samples were sieved into seven fractions from 0.1 mm to 3.15 mm. The mass distribution ratio valuse for each fraction was determined using the static batch method. Cesium sorption onto different minerals was demonstrated using digital image analysis in order to interpret thin section autoradiographs. The autoradiographic method based on irradiation-induced luminescence properties in feldspars was applied in order to estimate the alteration of tonalites.