1. Plutonium isotopes in the Qinling Mountains of China.
- Author
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Guan, Yongjing, Hua, Yuxin, Wang, Shenzhen, Chen, Wu, Jing, Qiaoyan, Huang, Chunping, Zhang, Peijun, De Cesare, Mario, Wang, Huijuan, Wang, Deyu, Guo, Zichen, and Liu, Zhiyong
- Subjects
PLUTONIUM isotopes ,RADIOISOTOPES ,AIR masses ,CESIUM isotopes ,ATMOSPHERIC circulation ,RADIOACTIVITY ,FOREST soils ,ISOTOPES - Abstract
In order to study the effect of air masses on the distribution of artificial radionuclides on both sides of the mountain range, Pu and
137 Cs in forest soils of the Qinling Mountains in Shaanxi Province were determined for the first time. The239+240 Pu and137 Cs activity concentrations ranged from 0.001 ± 0.001 to 0.501 ± 0.031 Bq/kg and 0.27 ± 0.06 to 7.82 ± 0.34 Bq/kg, respectively. The240 Pu/239 Pu atom ratios in samples ranged from 0.160 ± 0.024 to 0.218 ± 0.037 with an average value of 0.188 ± 0.014, indicated that Pu isotopes from the Qinling Mountains mainly came from global fallout. The results of this research add the239+240 Pu activity concentrations and240 Pu/239 Pu atom ratio of the Qinling Mountains, the atmospheric circulation in the Qinling Mountains did not significantly affect the Pu content. Also, it provides significant data on the radioactivity of Chinese soils. [ABSTRACT FROM AUTHOR]- Published
- 2023
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