丹东地区土壤天然放射性核素本底值调查研究

Abstract

Abstract: In order to clarify the background value of soil radioactivity in Dandong area, representative soil in Dandong area was used as research object, and the specific activities of ²²⁶Ra, ²³²Th and ⁴⁰K in 0-10 cm soil layer were measured by RMS 4096-USB digital low background multichannel r spectrometer. Results were evaluated by Nemero comprehensive evaluation method. The results show that the average specific activities of ²²⁶Ra, ²³²Th and ⁴⁰K in 0-10 cm soil layer in Dandong area are 100.12 Bq·kg^-1, 11.84 Bq·kg^-1 and 688.65 Bq·kg^-1 respectively. And the Nemero comprehensive index is 3.17, 0.35, 1.07, which is at a high level in Liaoning province and at a normal level in the whole country.

Key words: Dandong city, soil, background value, natural radioactivity

CLC Number:

X825

ZHENG Cunde, LIU Qingkuan, DONG Guochao, SUN Yu. Study on background value of soil natural radionuclides in Dandong area[J].RADIATION PROTECTION, 2022, 42(6): 579-584.

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Study on background value of soil natural radionuclides in Dandong area

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