The study of radiolytic stability of 25,27-bis(2-propyloxy)calix[4]-26,28-crown-6(iPr-C[4]C-6)

The radiolytic stability of 25,27-bis(2-propyloxy)calix4]-26,28-crown-6(iPr-C4]C-6) was studied. The radiation source was ⁶⁰Co and its dose rate was 437?Gy/min and the total absorbed dose was from 10⁴ to 10⁶?Gy. The iPr-C4]C-6 solid and 0.025?mol/L iPr-C4]C-6/n-octanol which were pre-equilibrated with 0.01 and 3?mol/L nitric acid, respectively, were absorbed different dose and their extraction performance were researched. The degradation mechanism of them was investigated by mass spectrometry and infrared spectrum. The results show that radiolytic stability of the iPr-C4]C-6 solid and 0.025?mol/L iPr-C4]C-6/n-octanol are good when their absorbed dose was less than 10⁶?Gy. The extracting system of iPr-C4]C-6/n-octanol is promising for separating cesium from high level liquid waste.