丹东地区土壤天然放射性核素本底值调查研究

摘要/Abstract

摘要： 为明确丹东地区土壤天然放射性核素²²⁶Ra、²³²Th、⁴⁰K的本底值,以丹东地区代表性土壤为研究对象,使用RMS 4096-USB数字化低本底多道r能谱仪测定其0~10 cm土层²²⁶Ra、²³²Th、⁴⁰K放射性活度浓度,并用内梅罗综合评价法对其结果进行评价。结果表明:丹东地区0~10 cm土层土壤²²⁶Ra、²³²Th、⁴⁰K的平均放射性活度浓度分别为100.12 Bq·kg^-1、11.84 Bq·kg^-1、688.65 Bq·kg^-1,内梅罗综合指数分别为3.17、0.35、1.07,与辽宁省均值比较,丹东²²⁶Ra含量特高,²³²Th微量,⁴⁰K偏高,处于全国测定结果范围内。

关键词: 丹东, 土壤, 本底值, 天然放射性

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

中图分类号:

X825

郑存德, 刘清宽, 董国超, 孙宇. 丹东地区土壤天然放射性核素本底值调查研究[J]. 辐射防护, 2022, 42(6): 579-584.

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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