Assessment of the depositional characteristics of the Yellow River estuary from 1960s by 239+240Pu and 137Cs

被引：3

作者：

Guan, Yongjing ^{[1
]}

Fan, Kaidi ^{[1
]}

Wang, Shenzhen ^{[1
]}

Cui, Liangjia ^{[1
]}

Wang, Huijuan ^{[1
]}

Guo, Zichen ^{[1
]}

Chen, Wu ^{[1
]}

He, Hua ^{[1
]}

Liu, Zhiyong ^{[2
,3
]}

机构：

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

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

[3] Soochow Univ, Collaborat Innovat Ctr Radiat Med, Jiangsu Higher Educ Inst, Suzhou 215123, Peoples R China

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 2024年 / 912卷

基金：

中国国家自然科学基金;

关键词：

239+240Pu; 137Cs; Yellow River estuary; Deposition; Chronometry; VERTICAL DISTRIBUTIONS; SEDIMENT ACCUMULATION; SOURCE IDENTIFICATION; CHANNEL SHIFTS; BOHAI SEA; PLUTONIUM; CS-137; CHINA; RECORDS; PU;

D O I：

10.1016/j.scitotenv.2023.169473

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The spatial and vertical distribution of 239+240Pu and 137Cs in the sediments of the Yellow River Delta was studied to evaluate the deposition dynamics in the Yellow River estuary from 1960s. The activity of 239+240Pu and 137Cs in sediment core ranged from 0.001 to 0.212 Bq/kg and 0.52-2.53 Bq/kg, respectively. A maximum accumulation peak and two secondary accumulation peaks appeared in the sediment core YR2. The average deposition rate of 8.3 cm/y for the Yellow River estuary from 1964 to 1976 was obtained. The proportion of Pu from the Yellow River net input and direct deposition to the total inventory of Pu in the estuary was assessed, with a total inventory of Pu in the abandoned estuary of 7.4 x 1010 Bq and a net input of 2.2 x 1010 Bq from the Yellow River. Pu deposited in the estuary only accounts for 18 % of the total Pu transported by the Yellow River, and most of the Pu is injected into the Bohai Sea with the Yellow River.

引用

页数：9

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