摘要
用批式实验法研究了低氧和大气条件下99TcO4 - 在磁黄铁矿上的吸附行为 ,并用稀硫酸解吸法对吸附机理进行了探讨。研究结果表明 ,吸附过程为氧化还原吸附 ;在低氧和大气条件下 ,磁黄铁矿对TcO4 - 均具有较强的吸附能力 ;低氧条件下 ,磁黄铁矿对TcO4 -
The sportion behaviors of technetium on pyrrhotine are studied with batch experiment and dilute sulfuric acid is used to dissolve the technetium adsorbed on pyrrhotine.Sorption and desorption experiment are performed under aerobic and anaerobic conditions (inert gas box).The results show that a significant sorption of technetium on pyrrhotine is found under aerobic and anaerobic conditions,and the sorption on the mineral is supposed to be due to the reduction of TcO 4 - to insoluble TcO 2· n H 2O.Desorption process of the sorbed technetium into dilute sulfuric acid is found to be different under aerobic and anaerobic conditions.On addition of H 2O 2 to the leach solution a sudden increase of the technetium concentration is observed.
出处
《核化学与放射化学》
CAS
CSCD
北大核心
2001年第2期72-78,共7页
Journal of Nuclear and Radiochemistry
