A new value of 93Zr half-life

Liquid samples of 93 Zr were isolated from high level liquid wastes (HLLW) by means of silica gel adsorption combined with tri-N-butyl-phosphate (TBP) extraction. Thereafter its radioactivity was determined by liquid scintillation counting (LSC) and its mass concentration by multi-collector inductively coupled plasma spectrometry (MC-ICP-MS). So a new value of 93 Zr half-life was found to be (1.13±0.11) × 10 6 a.