干旱区生态环境知识资源中心(Arid): Impact of Saharan dust events on radionuclides in the atmosphere, seawater, and sediments of the northwest Mediterranean Sea

Arid

DOI	10.1016/j.jenvrad.2020.106157
	Impact of Saharan dust events on radionuclides in the atmosphere, seawater, and sediments of the northwest Mediterranean Sea
	Pham, M. K.1; Chamizo, E.2; Lopez-Lora, M.2; Martin, J.3; Osvath, I.1; Povinec, P. P.4
通讯作者	Pham, M. K.
来源期刊	JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
ISSN	0265-931X
EISSN	1879-1700
出版年	2020
卷号	214
英文摘要	In February 2004, anthropogenic radionuclides (Cs-137, U-236, Pu-239 and Pu-240), transported from the Sahara Desert, were observed in the Monaco air, and later in water and sediment samples collected at the DYFAMED site in the northwest (NW) Mediterranean Sea. While U-236 and Cs-137 in Saharan dust particles showed a high solubility in seawater, Pu isotopes were particle reactive in the water column and in the sediment. The impact of the Saharan deposition was found at 0-1.0 cm of the sediment core for U-236 and Cs-137, and between 1.0 and 1.5 cm for Pu isotopes. The excess of U-236 was observed more in the water column than in the sediment, whereas the Pu239+240 total inventories were comparable in the water column and the sediment. This single-day particle event represented 72% of annual atmospheric deposition in Monaco. At the DYFAMED site, it accounted for 10% (Cs-137) and 15% (Pu239+240) activities of sinking particles during the period of the highest mass flux collected at the 200 and 1000 m water depths, and for a significant proportion of the total annual atmospheric input to the NW Mediterranean Sea (28-37% for Cs-137 and 34-45% for Pu239+240). Contributions to the total Cs-137 and Pu239+240 sediment inventories were estimated to be 14% and 8%, respectively. The Saharan dust deposition phenomenon (atmospheric input, water column and sediment) offered a unique case to study origin and accumulation rates of radionuclides in the NW Mediterranean Sea.
英文关键词	Radionuclides Cs-137 U-236 Pu isotopes Monaco air Water column Sediment DYFAMED station NW mediterranean
类型	Article
语种	英语
国家	Monaco ; Spain ; Argentina ; Slovakia
收录类别	SCI-E
WOS记录号	WOS:000518705000003
WOS关键词	ACCELERATOR MASS-SPECTROMETRY ; ANTHROPOGENIC RADIONUCLIDES ; WATER COLUMN ; PU ISOTOPES ; MONACO AIR ; CS-137 ; U-236 ; EXPORT ; DEPOSITION ; TRANSPORT
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314944
作者单位	1.IAEA, Environm Labs, Monte Carlo 98000, Monaco; 2.Univ Seville, Ctr Nacl Aceleradores, Seville 41092, Spain; 3.Consejo Nacl Invest Cient & Tecn, CADIC, Bernardo Houssay 200, RA-9410 Ushuaia, Argentina; 4.Comenius Univ, Fac Math Phys & Infomat, SK-84248 Bratislava, Slovakia
推荐引用方式 GB/T 7714	Pham, M. K.,Chamizo, E.,Lopez-Lora, M.,et al. Impact of Saharan dust events on radionuclides in the atmosphere, seawater, and sediments of the northwest Mediterranean Sea[J],2020,214.
APA	Pham, M. K.,Chamizo, E.,Lopez-Lora, M.,Martin, J.,Osvath, I.,&Povinec, P. P..(2020).Impact of Saharan dust events on radionuclides in the atmosphere, seawater, and sediments of the northwest Mediterranean Sea.JOURNAL OF ENVIRONMENTAL RADIOACTIVITY,214.
MLA	Pham, M. K.,et al."Impact of Saharan dust events on radionuclides in the atmosphere, seawater, and sediments of the northwest Mediterranean Sea".JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 214(2020).