湖北农业科学 ›› 2026, Vol. 65 ›› Issue (9): 28-33.doi: 10.14088/j.cnki.issn0439-8114.2026.09.006

• 资源·环境 • 上一篇    下一篇

中国甘肃、山东、江苏三省土壤中钚的放射性水平

夏蕾, 娄海林, 李晓芸, 张嫚, 王嘉   

  1. 中国原子能科学研究院,北京 102413
  • 收稿日期:2026-05-22 出版日期:2026-09-25 发布日期:2026-09-17
  • 通讯作者: 娄海林(1983-),男,河南商丘人,正高级工程师,硕士,主要从事辐射防护及环境保护研究,(电话)15010408174(电子信箱)louhailin2008@163.com。
  • 作者简介:夏蕾(1997-),女,河北保定人,助理工程师,主要从事辐射防护及环境保护研究,(电话)17736271129(电子信箱)x5120160051@163.com
  • 基金资助:
    中核集团集中研发项目(FA222512000206)

Radioactivity levels of plutonium in the soil of Gansu, Shandong and Jiangsu Provinces in China

XIA Lei, LOU Hai-lin, LI Xiao-yun, ZHANG Man, WANG Jia   

  1. China Institute of Atomic Energy, Beijing 102413, China
  • Received:2026-05-22 Published:2026-09-25 Online:2026-09-17

摘要: 为掌握中国典型区域土壤中人工放射性核素的环境水平与分布特征,采用强碱性阴离子树脂分离纯化技术结合α谱仪测量方法,对中国甘肃、山东以及江苏3个省份的30个表层土壤样品中钚同位素(239+240Pu)的放射性水平进行分析测定。结果表明,甘肃、山东及江苏3省土壤中239+240Pu的活度浓度范围依次为0.018~0.085 Bq/kg、0.014~0.052 Bq/kg以及0.010~0.117 Bq/kg,与中国表层土壤中239+240Pu活度浓度水平相当,均属于正常的本底放射性水平,整体处于低水平环境放射性范围,辐射安全风险可控。通过系统对比中国东、西部3省土壤中239+240Pu的背景水平,明确了区域浓度梯度与分布特征,整体平均活度浓度呈现出江苏省>甘肃省>山东省的梯度分布,与中国大气沉降核素的空间分布规律一致。研究结果可为中国区域环境放射性基线调查、核素环境行为研究及跨区域对比提供科学依据。

关键词: 土壤, 钚, 放射性, 甘肃省, 山东省, 江苏省

Abstract: In order to understand the environmental levels and distribution characteristics of artificial radioactive nuclides in the soil of typical regions in China, the radioactive levels of 239+240Pu in soil samples collected from Gansu, Shandong and Jiangsu Provinces of China were determined by the method of separation and purification with strongly basic anion exchange resin combined with alpha spectrometry measurement. The results showed that the activity concentration ranges of 239+240Pu in the soils of the three provinces were 0.018-0.085 Bq/kg, 0.014-0.052 Bq/kg and 0.010-0.117 Bq/kg, respectively, which were comparable to the activity concentration level of 239+240Pu in the surface soil of China. All of them belonged to the normal background radioactive level and were within the low-level environmental radioactive range, with controllable radiation safety risks. The background levels of 239+240Pu in the soils of the three provinces in the east and west of China were systematically compared, and the regional concentration gradient and distribution characteristics were clarified. The overall average activity concentration showed a gradient distribution of Jiangsu > Gansu > Shandong, which was in line with the spatial distribution law of atmospheric deposition nuclides in China. The results of the study could provide a scientific basis for the baseline investigation of regional environmental radioactivity in China, the study of nuclide environmental behavior and cross-regional comparison.

Key words: soil, plutonium, radioactivity, Gansu Province, Shandong Province, Jiangsu Province

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