Related Experiment Video
Updated: Mar 28, 2026

Speciation and Bioavailability Measurements of Environmental Plutonium Using Diffusion in Thin Films
Published on: November 9, 2015
A preliminary study for the development of reference material using oyster for determination of (137)Cs, (90)Sr and
Sang-Han Lee1, Jung-Suk Oh1, Jong-Man Lee1
1Korea Research Institute of Standards and Science, Daejeon 305-340, Republic of Korea.
Abstract:
A new reference material for the determination of (137)Cs, (90)Sr and Pu isotopes ((238)Pu and (239,240)Pu) is being developed using dried oyster matrix by Korea Research Institute of Standards and Science (KRISS). The oyster was collected from Tongyoung harbour, southern part of Korea and the artificial radionuclides ((137)Cs, (90)Sr, (238)Pu and (239,240)Pu) were spiked into the material. After pretreatment and processing, the material was tested for homogeneity and massic activities were determined by measuring (137)Cs, (90)Sr, (238)Pu and (239,240)Pu. The reference value and extended uncertainty for those isotopes will be reported later.

