Field study of the migration of Sr-90, Np-237, Pu-238 and Am-241 in   unsaturated Chinese loess under artificial rainfall condition

doi:10.1524/ract.92.2.89.27461

CORC > 北京大学 > 化学与分子工程学院

	Field study of the migration of Sr-90, Np-237, Pu-238 and Am-241 in unsaturated Chinese loess under artificial rainfall condition
	Li, SS ; Liu, CL ; Zhao, YJ ; Wu, QH ; Wang, ZM ; Ji, SW
刊名	radiochimica acta
	2004
关键词	field study Sr-90 Np-237 Pu-238 and Am-241 unsaturated Chinese loess artificial rainfall RADIONUCLIDE MIGRATION ALLUVIAL AQUIFER YUCCA MOUNTAIN 2-REGION FLOW SORPTION URANIUM(VI) GROUNDWATER TRANSPORT DISPOSAL NEVADA
DOI	10.1524/ract.92.2.89.27461
英文摘要	The migration of Sr-90, Np-237, Pu-238 and Am-241 in unsaturated Chinese loess under artificial rainfall condition was investigated at the CIRP's field test site. Quartz containing Sr-90, Np-237, Pu-238 and Am-241 was introduced into an experimental pit and the pit was backfilled. Artificial rainfall of 10-15 mm/d was applied to the experimental pit for 1078 days. HTO was used for obtaining the migration rate of moisture water in the pit. Vertical core soil samples were taken twice a year and Cut into 0.5 cm long section soil samples. The section soil samples were weighed and wind dried. Radioactivity of Np-237 and Am-241 in the section soil samples was measured with a low energy photon detector (HPGe); Sr-90 and Pu-238 were determined with a low background alpha beta detector after chemical separation. During the experiment, moisture water at different depths was taken on a daily basis and H-3 in the moisture water samples was determined with liquid scintillation technique. Experimental result indicates that the downward migration rate of moisture water was 2.27 cm/d and the retardation factors of Sr-90, Np-237, Pu-238 and Am-241 in the loess unsaturated zone were 9.9 x 10(2), 3.2 x 10(3), 3.2 x 10(3) and 4.5 x 10(3), respectively. This result suggests that Sr-90, Np-237, Pu-238 and Am-241 could be effectively retarded by the loess unsaturated zone.; Chemistry, Inorganic & Nuclear; Nuclear Science & Technology; SCI(E); 1; ARTICLE; 2; 89-94; 92
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/400589]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Li, SS,Liu, CL,Zhao, YJ,et al. Field study of the migration of Sr-90, Np-237, Pu-238 and Am-241 in unsaturated Chinese loess under artificial rainfall condition[J]. radiochimica acta,2004.
APA	Li, SS,Liu, CL,Zhao, YJ,Wu, QH,Wang, ZM,&Ji, SW.(2004).Field study of the migration of Sr-90, Np-237, Pu-238 and Am-241 in unsaturated Chinese loess under artificial rainfall condition.radiochimica acta.
MLA	Li, SS,et al."Field study of the migration of Sr-90, Np-237, Pu-238 and Am-241 in unsaturated Chinese loess under artificial rainfall condition".radiochimica acta (2004).