甘肃河西地区部分农业土壤中天然放射性核素水平调查与分析  

A survey of natural radionuclide contents in agricultural soils in Hexi area,Gansu province

作　　者：王芳[1] 王延俊 张涵宇 王赟[1] 邬家龙[1] 刘小云[2] 孙卫[1] 陈琴[3] Wang Fang;Wang Yanjun;Zhang Hanyu;Wang Yun;Wu Jialong;Liu Xiaoyun;Sun Wei;Chen Qin(Department of Radiation Hygiene,Gansu Center for Disease Control and Prevention,Lanzhou 730000,China;Physical and Chemical Laboratory,Gansu Center for Disease Control and Prevention,Lanzhou 730000,China;Emergency Office,Gansu Center for Disease Control and Prevention,Lanzhou 730000,China)

机构地区：[1]甘肃省疾病预防控制中心放射卫生科,兰州730000 [2]甘肃省疾病预防控制中心理化实验室,兰州730000 [3]甘肃省疾病预防控制中心应急办公室,兰州730000

出　　处：《中华放射医学与防护杂志》2025年第3期211-215,共5页Chinese Journal of Radiological Medicine and Protection

基　　金：甘肃省自然科学基金(22JR11RA183,23JRRA1798);甘肃省技术创新计划引导项目(21CX6ZA034);甘肃省卫生健康行业科研计划项目(GSWSKY2024-40)。

摘　　要：目的调查甘肃省河西地区农业土壤中天然放射性核素含量,积累甘肃地区土壤放射性核素含量的基础数据。方法采集甘肃河西地区的146份农业土壤样品,使用ORTEC公司P型高纯锗γ能谱分析系统对样品中的放射性核素^(232)Th、^(226)Ra和^(40)K进行测量,对测量数据进行整理分析。结果甘肃河西地区部分农业土壤中天然放射性核素^(232)Th、^(226)Ra和^(40)K的比活度范围分别为18.9~108.4、14.4~79.2和440.1~1358.2 Bq/kg,平均含量分别为(68.2±16.3)、(47.9±11.1)、(763.9±133.9)Bq/kg。甘肃河西地区不同区域农业土壤中天然放射性核素^(232)Th、^(226)Ra和^(40)K的比活度分布差异有统计学意义(H=50.87、45.14、^(40).28,P<0.05)。结论农业土壤天然放射性核素含量研究可为放射核素向农作物的转移研究提供基础资料,值得进一步的调查监测和分析。Objective To investigate the contents of natural radionuclides in agricultural soils in some of Gansu Hexi area to accumulate the relevant basic data.Methods A stratified sampling method was used to collect 146 soil samples in the area.ORTEC P-type HPGE gamma spectrometry system was used to measure radionuclides.The measurement data were collated and analyzed.Results The activity concentrations measured were^(232)Th 18.94-108.39 Bq/kg,^(226)Ra 14.37-79.20 Bq/kg and^(40)K 440.03-1358.18 Bq/kg,in turn with the mean values of(68.22±16.32),(47.90±11.12)and(763.90±133.93)Bq/kg,respectively.The difference in activity concentrations of^(232)Th,^(226)Ra and^(40)K in agricultural soils in different areas was statistically significant(H=50.87,45.14,^(40).28,P<0.05).Conclusions The study on the activity concentrations of natural radionuclides in agricultural soils provides basic information for the transfer of radionuclides to crops,which needs further investigation,monitoring and analysis.

关 键 词：甘肃河西地区 农业土壤 天然放射性核素 Γ能谱 

分 类 号：S15[农业科学—土壤学]