Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2016, Vol. 27 ›› Issue (4): 77 doi: 10.1007/s41365-016-0087-5


Occurrence of HTO and NE-OBT in soil in the vicinity of the Qinshan Nuclear Power Plant

Lin Du 1,2, Qin Zhang 1,2, Zheng-Hai Xia 3, Yu-Hua Ma 1,4, Ling Wang 1,2, Lai-Lai Qin 1,2, Ke Deng 1,2, Sheng-Wei Wu 1, Guang-Hua Wang 1, Wei Liu1,2   

  1. 1 Shanghai Institute of Applied Physics, Chinese Academy of Science, Shanghai 201800, China
    2 University of Chinese Academy of Science, Beijing 100049, China
    3 CNNC Nuclear Power Operations Management Co. Ltd, Haiyan 314300, China
    4 Shanghai Tech University, Shanghai 201210, China
  • Contact: Wei Liu
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Lin Du, Qin Zhang, Zheng-Hai Xia, Yu-Hua Ma, Ling Wang, Lai-Lai Qin, Ke Deng, Sheng-Wei Wu, Guang-Hua Wang. Occurrence of HTO and NE-OBT in soil in the vicinity of the Qinshan Nuclear Power Plant.Nuclear Science and Techniques, 2016, 27(4): 77     doi: 10.1007/s41365-016-0087-5


In this study, concentrations of tritiated water (HTO) and non-exchangeable organically bound tritium (NE-OBT) and the NE-OBT/HTO ratios were determined in soil around Qinshan Nuclear Power Plant (NPP), Zhejiang, China, and their vertical profile and spatial distribution were investigated. Results showed variations in both the HTO and NE-OBT concentrations in the vertical profile. The HTO concentrations generally decreased firstly and then increased with the increasing depths, but the trend was not significant. The NE-OBT concentrations in the surface soils (0–5 cm) were considerably lower than those in the deep soils (5–25 cm) at all the sites. The NE-OBT/HTO ratios also show a variable vertical profile, initially increasing and then decreasing with increasing soil depth. Both the HTO and NE-OBT concentrations decreased with the increasing distance to the HWRs in deep soil layers (5–25 cm), revealing that the released tritium from the NPP affected the spatial distribution.

Key words: HTO, NE-OBT, NE-OBT/HTO ratio, Vertical profile, Spatial profile