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

doi:10.14088/j.cnki.issn0439-8114.2026.09.006

Abstract

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

CLC Number:

X53
X591

XIA Lei, LOU Hai-lin, LI Xiao-yun, ZHANG Man, WANG Jia. Radioactivity levels of plutonium in the soil of Gansu, Shandong and Jiangsu Provinces in China[J]. HUBEI AGRICULTURAL SCIENCES, 2026, 65(9): 28-33.

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