caa a22 4500 469112409 CHVBK 20180323133114.0 cr unu---uuuuu 170328e19920801xx s 000 0 eng 10.1007/BF02040498 doi (NATIONALLICENCE)springer-10.1007/BF02040498 Studies on leaching behaviour of sodium borosilicate glasses by neutron activation: Effects of groundwater composition, pH, surface area to volume ratio, and temperature [Elektronische Daten] [D. Moir, A. Chatt] Static leaching experiments have been conducted to evaluate the durability of sodium borosilicate glass as the host matrix for immobilized high-level radioactive wastes. Simulated granitic groundawater, synthetic Grande Ronde basaltic groundwater and distilled deionized water have been used. The results indicated a strong influence of the leachant composition through both its pH and nature as well as concentrations of the ions present on the leach rate. The roles of silicon, boron and a few other elements on leaching have been examined. Three surface area to volume ratios (SA/V) and two temperatures were investigated. Total mass loss and normalized elemental mass loss results showed that the rate of release decreased with increased SA/V ratio in the three leachants at both temperatures. The rate of leaching at 90 °C was 5-30 times higher than that at 40 °C. Activation energies for the glass at three SA/V ratios have been calculated. Akadémiai Kiadó, 1992 Moir D. Trace Analysis Research Centre, Department of Chemistry, Dalhousie University, B3H 4J3, Halifax, Nova Scotia, (Canada) aut Chatt A. Trace Analysis Research Centre, Department of Chemistry, Dalhousie University, B3H 4J3, Halifax, Nova Scotia, (Canada) aut Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 161/2(1992-08-01), 503-526 0236-5731 161:2<503 1992 161 10967 https://doi.org/10.1007/BF02040498 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02040498 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Moir D. Trace Analysis Research Centre, Department of Chemistry, Dalhousie University, B3H 4J3, Halifax, Nova Scotia, (Canada) aut NATIONALLICENCE 700 1- Chatt A. Trace Analysis Research Centre, Department of Chemistry, Dalhousie University, B3H 4J3, Halifax, Nova Scotia, (Canada) aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 161/2(1992-08-01), 503-526 0236-5731 161:2<503 1992 161 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer