Otto Fabritius, Xiaodong Li, Tatiana Sorokina, Anna-Maria Jakobsson, Tiina Sojakka, Marja Siitari-Kauppi
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Radium and barium sorption and precipitation on crystalline rock; experimental results and modeling development
The sorption and precipitation of Ra and Ba on crystalline rock was studied with batch sorption and precipitation experiments, and geochemical modeling. Following the precipitation experiments, (Ba,Ra)SO4 experimental partition coefficient (λ) and RaSO4(s) solubility constant values were obtained. It was observed that especially in groundwaters of low overall salinity, and/or of high SO4 and Ba content, Ra is strongly removed from the solution to both coprecipitation and sorption. A new geochemical model was developed which successfully interprets the experimental results. The precipitates of BaSO4(s) were directly observed with the rock minerals with a SEM/EDX analysis.
期刊介绍：
An international periodical publishing original papers, letters, review papers and short communications on nuclear chemistry. The subjects covered include: Nuclear chemistry, Radiochemistry, Radiation chemistry, Radiobiological chemistry, Environmental radiochemistry, Production and control of radioisotopes and labelled compounds, Nuclear power plant chemistry, Nuclear fuel chemistry, Radioanalytical chemistry, Radiation detection and measurement, Nuclear instrumentation and automation, etc.
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