Optimization of automated sequential anion-exchange separation of ultra-trace elements

Miyamoto, Yutaka   ; Yasuda, Kenichiro   ; Magara, Masaaki  ; Kimura, Takaumi 

The sequential separation technique of trace U, Th, Pb and lanthanides with a single anion-exchange column has been developed. The pressurized sequential separation system with compressed air was examined to make up an automated separation system. The separation was optimized for some parameters including the flow rate of eluents and the composition of eluents. This pressurized separation system improved the resolution of separation peaks and reduced the separation time compared with the previous gravity flow separation.