Spatial distribution, source identification, and transportation paths of plutonium in the Beibu Gulf, South China Sea

被引：3

作者：

Guan, Yong-jing ^{[1
]}

He, Hua ^{[1
]}

Fan, Kai-di ^{[1
]}

Wang, Shen-zhen ^{[1
]}

Guo, Zi-chen ^{[1
]}

Wang, Hui-juan ^{[1
]}

Cui, Liang-jia ^{[1
]}

Chen, Wu ^{[1
]}

Huang, Chun-ping ^{[1
]}

Liu, Zhi-yong ^{[2
]}

He, Xian-wen ^{[3
]}

Guo, Kai-xing ^{[3
]}

Zhang, Jia-jia ^{[3
]}

Xu, Ze-yue ^{[3
]}

机构：

[1] Guangxi Univ, Sch Phys Sci & Technol, Guangxi Key Lab Relativist Astrophys, Nanning 530004, Peoples R China

[2] Soochow Univ, Jiangsu Higher Educ Inst, Sch Radiol & Interdisciplinary Sci RAD X, State Key Lab Radiat Med & Protect, Suzhou 215123, Peoples R China

[3] Radiat Environm Management & Monitoring Stn Guangx, Nanning 530222, Guangxi, Peoples R China

来源：

MARINE POLLUTION BULLETIN | 2024年 / 199卷

基金：

中国国家自然科学基金;

关键词：

Beibu Gulf; 39+240 Pu activity; 240 Pu/ 239 Pu atom ratio; Pacific Proving Ground; Global fallout; SETTLING PARTICLES; CONTINENTAL-MARGIN; MARSHALL-ISLANDS; ATOM RATIOS; ISOTOPES; PU; PU239+240; SEDIMENTS; PU-240; OCEAN;

D O I：

10.1016/j.marpolbul.2023.115972

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

To investigate the spatial distribution and source of plutonium isotopes in the Beibu Gulf, surface sediments were collected and analyzed using sector field inductively coupled plasma mass spectrometry (SF-ICP-MS). The activities of 239+240Pu in surface sediments ranged from 0.012 to 0.451 mBq/g (mean: 0.171 +/- 0.138 mBq/g, n = 36), indicating a decreasing trend in a counterclockwise direction from the southern bay mouth. The counterclockwise decreasing trend in the south of the bay mouth is similar to the current in the Beibu Gulf. The 240Pu/239Pu atom ratios in surface sediments ranged from 0.156 to 0.283 (mean: 0.236 +/- 0.031, n = 36), slightly higher than that of the global fallout value of 0.18. This suggests that the Pu in the Beibu Gulf was a combination of global fallout and Pacific Proving Ground (PPG). The average contribution of the plutonium (Pu) derived from the PPG in the sediment was estimated to be 52 % +/- 24 %.

引用

页数：9

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