separation of 226Ra using dibenzo-18-crown-6 ether functionalised silica
(SiO2) disks, Radiation Physics and Chemistry 140 pp. 57-60 Elsevier
source preparation technique for the rapid analysis of 226Ra by alpha-spectrometry. DB-18CE-6 was chemically
immobilised onto the surface of SiO2 disks. It is anticipated that the high levels of selectivity of DB-18CE-6 for
radium will allow for an efficient chemical separation of 226Ra from other elements present in sample matrices.
226Ra was adsorbed as a monolayer onto the surface of the silica disks, attaching to the functionalised centres of
the DB-18CE-6 structure, forming a high resolution counting source for alpha-spectrometry. The chemical
recovery of radium from synthetic samples was 2.3% at pH 2, with higher recoveries expected over the pH range