Abstract: DECOMPOSITION OF SILICATE SAMPLE BY FUSION WITH POTASSIUM HYDROXIDE AND POTASSIUM NITRATEYANG TONGZAI；WANG XIAOLIN；LIU YINONG；CHEN YINLIANG；SUN YING；LI YUOIAN（Institute of Nuclear Physics and Chemistry,China Academy of Engineering Physics,P. O. Box 525（75），Chengdu 610003）ABSTRACT The decomposition method of silicate sample by fusion with KOH and KNO_3 recounted．Thedecomposed sample can be used to separate and purify the rare earth nuclides． The advantage ofthis method is that it can decompose larger amount of sample under lower decompositiontemperature.Key words Decompose Fusion Silicate sample Rare earth nuclide