气候变化领域集成服务门户(CCPortal): Radioactive level of coral reefs in the South China Sea

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DOI	10.1016/j.marpolbul.2019.03.030
	Radioactive level of coral reefs in the South China Sea
	Lin W.; Yu K.; Wang Y.; Liu X.; Ning Q.; Huang X.
发表日期	2019
ISSN	0025326X
起始页码	43
结束页码	53
卷号	142
英文摘要	In this study, we examined radioactivity simultaneously in surface marine sediments and coral skeletons collected from 12 locations of the fringing and atoll reefs in the South China Sea. Radioactive level declined from the fringing reefs to atoll reefs because of input of terrigenous minerals in the fringing reefs. Radioactivity was higher in coral skeletons than in marine sediments because of the high 228Ra activity in coral skeletons. Additionally, an abnormally low 226Ra/238U activity ratio (<0.1) of marine sediments in coral reefs was attributed to the biological process of active uptake of 226Ra and 238U from seawater by coral polyps rather than the ingrowth process in the 238U-230Th-226Ra decay chain. Several radiological indices were evaluated in coral reefs and significantly lower than recommended values. Particularly, the average Raeq in the atoll reefs was <5% of the world's average of Raeq. Our results displayed typically radioactive status in coral reefs without close-in fallout of anthropogenic radionuclides. © 2019 Elsevier Ltd
英文关键词	226Ra/238U; Coral reefs; Nuclear weapons testing; Radioactivity; Sediment
语种	英语
scopus关键词	Musculoskeletal system; Nuclear weapons; Radiation; Radioactivity; Sediments; Submarine geology; Anthropogenic radionuclides; Biological process; Close-in fallouts; Coral reef; Marine sediments; Nuclear weapons testing; Recommended values; ^226Ra/^238U; Reefs; radioisotope; radium 226; radium 228; sea water; thorium 230; uranium 238; atoll; fringing reef; marine sediment; nuclear weapons testing; radioactive pollution; radioactivity; radium isotope; uranium isotope; Article; coral reef; marine environment; radioactivity; sea pollution; South China Sea; surface water hydrology; analysis; animal; Anthozoa; China; growth, development and aging; radioactivity; water pollutant; Pacific Ocean; South China Sea; Anthozoa; Animals; Anthozoa; China; Coral Reefs; Radioactivity; Seawater; Water Pollutants, Radioactive
来源期刊	Marine Pollution Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/149976
作者单位	Coral Reef Research Center of China, School of Marine Sciences, Guangxi University, Nanning, 530004, China; Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Nanning, 530004, China; Guangxi Academy of Oceanography, Nanning, 530022, China
推荐引用方式 GB/T 7714	Lin W.,Yu K.,Wang Y.,et al. Radioactive level of coral reefs in the South China Sea[J],2019,142.
APA	Lin W.,Yu K.,Wang Y.,Liu X.,Ning Q.,&Huang X..(2019).Radioactive level of coral reefs in the South China Sea.Marine Pollution Bulletin,142.
MLA	Lin W.,et al."Radioactive level of coral reefs in the South China Sea".Marine Pollution Bulletin 142(2019).