@article{oai:repo.qst.go.jp:00049170,
 author = {Ni, Youyi and Wang, Zhongtang and Guo, Qiuju and Zheng, Jian and Li, Sixuan and Lin, Jinxian and Tan, Zhaoyi and Huang, Wenna and Ni, Youyi and Zheng, Jian},
 journal = {Chemosphere},
 month = {Dec},
 note = {The vertical distribution and downward migration of 239+240Pu and 241Am in diverse types of Chinese soils (forest, grassland and desert) were studied. The mean 239+240Pu and 241Am activity concentrations in the investigated soil cores were 0.278-0.692 mBq/g and 0.128-0.373 mBq/g, respectively, while the accumulative inventories were 63-138.9 Bq/m2 for 239+240Pu and 28.3-61 Bq/m2 for 241Am. The global fallout was thought to be the source of these radionuclides as indicated by the characteristic 241Am/239+240Pu activity ratios and 240Pu/239Pu atomic ratios in these samples. The well-founded convection-dispersion equation (CDE) was used to calculate the migration parameters of 239+240Pu; meanwhile a compartment model was employed to compare the migration of 239+240Pu and 241Am in successive soil layers. This is the first work that comparatively studies the migrations of 239+240Pu and 241Am in Chinese soils in realistic environments. Results showed that the migration behaviors of 239+240Pu and 241Am were rather similar; both velocities were less than 0.3 cm/y in diverse types of soils. These findings were compatible with those of short-term laboratory simulation experiments in China.},
 pages = {1002--1009},
 title = {Distinctive distributions and migrations of 239+240Pu and 241Am in Chinese forest, grassland and desert soils},
 volume = {212},
 year = {2018}
}