137Cs and 239+240Pu in the Bohai Sea of China: Comparison in distribution and source identification between the inner bay and the tidal flat

Zhuang, Qifan; Li, Guosheng; Wang, Fu; Tian, Lirong; Jiang, Xingyu; Zhang, Kexing; Geng, Lei; Pan, Shuguo; Li, Yong

doi:10.1016/j.marpolbul.2018.12.005

Cited by 25 publications

(25 citation statements)

References 54 publications

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“…239+240 Pu activities have different distributions in different seas. In the Bohai area, Zhuang et al (2019) found that higher 239+240 Pu activity in the surface sediments were observed in the wetlands of the tidal flat covered by vegetation than in other selected samples and showed an increasing trend from land to sea. In addition, the distribution of 239+240 Pu activity in the surface sediment of Bohai Bay presented an increasing trend from north to south (Zhuang et al 2019).…”

Section: Methodsmentioning

confidence: 74%

“…In the Bohai area, Zhuang et al (2019) found that higher 239+240 Pu activity in the surface sediments were observed in the wetlands of the tidal flat covered by vegetation than in other selected samples and showed an increasing trend from land to sea. In addition, the distribution of 239+240 Pu activity in the surface sediment of Bohai Bay presented an increasing trend from north to south (Zhuang et al 2019). According to the distribution of 239+240 Pu activity in the surface sediments of the Bohai area, on the one hand, they might be attributed to fine-grained sediments due to the high particle affinity of Pu (Xu et al 2017).…”

Section: Methodsmentioning

confidence: 74%

“…These reported data indicate that 239+240 Pu activity in the surface sediments of the seas and estuaries of China are inhomogeneous. The average 239+240 Pu activity in the surface sediments of Baohai Bay is 0.497 ± 0.269 mBq/g and in Liaodong Bay it is 0.343 ± 0.276 mBq/g (Zhuang et al 2019). The average 239+240 Pu activity in the surface sediments of the Yellow Sea is 0.23 mBq/g (Nagaya and Nakamura 1992;Hong et al 2006), which is lower than that of the Bohai Sea (Baohai Bay and Liaodong Bay).…”

Section: Methodsmentioning

confidence: 81%

“…Besides, the distribution of 240 Pu/ 239 Pu atom ratios in the surface sediments of Bohai Bay also present an increasing trend from land to sea and from north to south. In addition, in the Liaohe estuary, the 240 Pu/ 239 Pu atom ratios show an overall decreasing trend from the estuary towards the land (Zhuang et al 2019).…”

Section: Methodsmentioning

confidence: 93%

“…Relationship between 239+240 Pu activity and 240 Pu/ 239 Pu atom ratio in the surface sediments of different seas and estuaries of China. Su and Huh 2002;Lee et al 2003;Wang and Yamada 2005;Hong et al 2006;Zheng and Yamada 2006;Liu et al 2011a;Pan et al 2011;Wu et al 2014;Wang et al 2017;Wang et al 2019b;Zhuang et al 2019).…”

Section: Methodsmentioning

confidence: 99%

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Distribution and source of Pu in the sediments of the seas and estuaries of China—a review

Wang

2020

Anthropocene Coasts

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The coastal zone is the most concentrated area of human activities, and it is also the main accumulation zone of continental sediments, which is an ideal area for studying anthropocene sedimentary records. This study summarizes the distribution of 239+240Pu activity, 239+240Pu inventory, and 240Pu/239Pu atom ratios in the sediments of the seas and estuaries of China. Studies have shown that the distribution of 239+240Pu activity in sediments is mainly influenced by sediment properties and ocean current dynamics. Furthermore, 239+240Pu activity in sediment cores has obvious peak characteristics, which can be used in sediment dating. In fact, 240Pu/239Pu atom ratios indicate that the Pu in the sediments of the seas and estuaries of China mainly comes from global fallout and the Pacific Proving Grounds (PPG). Pu from the PPG enters the seas of China through the North Equatorial Current and Kuroshio intrusion current. And the contribution of Pu from the PPG in the East China Sea, the South China Sea, and the Yangtze estuary is over 40%. Moreover, Pu has been applied in the tracer of land–sea interactions and ocean dynamics, and it can be used as a background value to study the changes of Pu in the coastal zone of China in the future.

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Section: Methodsmentioning

confidence: 74%