Abstract: STUDY OF NEW NEUTRON-RICH NUCLIDE ~（185）Hf Ⅱ.THE RAPID-CHEMICAL SEPARATION STUDY ON THE SYNTHESIS AND IDENTIFICATIONZNANG TIANMEI；CHEN JIGREN；YUAN SHUANGGUI；PAN QIANGYAN；ZHANG XUEQIAN；XU SHUWEI（Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000）（Department of Modern Physics，Lanzhou University,Lanzhou 730000）ABSTRACT The development and experiment of rapid-chemical separation procedure on the synthesisand identification of new neutron-rich nuclide ~（185）Hf are reported．Hafnium is precipitated in theform of BaHfF_6 ，then is seperated from tangsten，tantalum and other reaction products. The pre-cipitate is used as a source to be measured to obtain its γ-ray spectroscopy. The typical separation time of this procedure is about 6-7min and the chemical efficiency is53％. Contamination activities of Ta and W have been reduced to 5％and 8％，respectively. Key words New neutron nuclide~（185）Hf Precipitation method BaHfF_6