Speaker
Description
Environmental radioactivity monitoring activities are being strengthened owing to concerns about radiation pollution. Therefore, various research laboratories, institutes, and universities are conducting environmental radiation investigations around nuclear power plants (NPPs). However, the reliability of the results continues to trigger controversy in society.
This study was conducted to develop a reference material (RM) for the quality control of 238U and 234U analyses in marine sediments. The RM was prepared according to ISO Guides 31, 34, and 35. The homogeneity test of the marine sediment RM was implemented by analyzing two batch samples from ten bottles using multiple acid digestion and alkali fusion. The homogeneity was evaluated as appropriate. The reference values of 238U and 234U in marine sediment RM were 43.4 ± 0.8 Bq kg-1 and 41.8 ± 1.0 Bq kg-1, respectively. The developed marine sediment RM is expected to be useful for the development of new analytical methods for similar samples, calibration of measurement systems, and quality control.
