| 我国陆地表层土壤的238Pu水平和溯源分析 |
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| 引用本文： | 翟绍晶,张海涛,罗茂益,伊小伟,林剑锋,张伟超,张自禄,党海军. 我国陆地表层土壤的238Pu水平和溯源分析[J]. 中国环境科学, 2022, 42(12): 5796-5802 |
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| 作者姓名： | 翟绍晶 张海涛 罗茂益 伊小伟 林剑锋 张伟超 张自禄 党海军 |
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| 作者单位： | 1. 西北核技术研究所, 陕西 西安 710024;2. 中国辐射防护研究院, 山西 太原 030006 |
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| 基金项目： | 科技部基础性工作专项项目（2015FY110800） |
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| 摘 要： | 基于我国陆地表层土壤样品中238Pu本底水平数据缺少的问题，分析了采自全国多个地区陆地表层土壤样品中238Pu的比活度.结果表明，我国陆地表层土壤样品中238Pu比活度很低，范围在0.007~0.045Bq/kg，238Pu/239+240Pu活度比范围为0.032~0.041，这些数值均与周边国家和中纬度地区的报道值接近.根据二元模型对我国陆地表层土壤的238Pu来源进行分析，结果表明我国表层土壤样品中238Pu主要来源于核试验的全球沉降和SNAP-9A的沉降.
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| 关 键 词： | 表层土壤 238Pu 含量 来源 |
| 收稿时间： | 2022-05-31 |
Level and source of 238Pu in Chinese terrestrial surface soils |
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| ZHAI Shao-jing,ZHANG Hai-tao,LUO Mao-yi,YI Xiao-wei,LIN Jian-feng,ZHANG Wei-chao,ZHANG Zi-lu,DANG Hai-jun. Level and source of 238Pu in Chinese terrestrial surface soils[J]. China Environmental Science, 2022, 42(12): 5796-5802 |
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| Authors: | ZHAI Shao-jing ZHANG Hai-tao LUO Mao-yi YI Xiao-wei LIN Jian-feng ZHANG Wei-chao ZHANG Zi-lu DANG Hai-jun |
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| Affiliation: | 1. Northwest Institute of Nuclear Technology, Xi'an 710024, China;2. China Institute for Radiation Protection, Taiyuan 030006, China |
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| Abstract: | To fill the lack of background data of 238Pu in terrestrial environment of China, the surface soil samples collected from different locations were analyzed for the plutonium isotopes content (238Pu, 239+240Pu). The results showed that the specific activities of 238Pu in samples were very low, in range of 0.007~0.045Bq/kg and the activity ratios of 238Pu/239+240Pu were in range of 0.032~0.041, similar to the reported data from neighboring countries and other mid-latitude locations in the northern hemisphere. A binary model was employed to attribute the origin of 238Pu in the environment, and the results suggested that the origin of 238Pu in surface soils be related most of all to nuclear weapon fallout and SNAP-9A fallout. |
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| Keywords: | surface soils 238Pu content source |
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