The preparation of 182Hf standard samples for AMS measurement is presented. It consists of four processes
including synthesis of radioactive nuclides
accurate measurement of isotopic ratios
dilution of standards and preparation of HfF4. So far we have measured the initial isotopic ratio of 182Hf/180Hf with TIMS
the result is (2.33±0.07)×10-6. We have prepared a series of standards with different isotopic ratios (10-6—10-13) and given the uncertainty of the standards.