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DOI	10.1021/acs.est.1c01573
	X-ray Spectroscopic Quantification of Phosphorus Transformation in Saharan Dust during Trans-Atlantic Dust Transport
	Dam, Than T. N.; Angert, Alon; Krom, Michael D.; Bigio, Laura; Hu, Yongfeng; Beyer, Kevin A.; Mayol-Bracero, Olga L.; Santos-Figueroa, Gilmarie; Pio, Casimiro; Zhu, Mengqiang
通讯作者	Zhu, MQ (corresponding author), Univ Wyoming, Dept Ecosyst Sci & Management, Laramie, WY 82071 USA.
来源期刊	ENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN	0013-936X
EISSN	1520-5851
出版年	2021
卷号	55 期号:18 页码:12694-12703
英文摘要	Saharan dust is an important phosphorus (P) supply to remote and oligotrophic parts of the oceans and American lowland tropical rainforests. Phosphorus speciation in aeolian dust ultimately controls the release and bioavailability of P after dust deposition, but the speciation in Saharan dust and its change during the trans-Atlantic transport remains unclear. Using P K-edge X-ray absorption near edge structure (XANES) spectroscopy, we showed that with increasing dust traveling distance from the Sahara Desert to Cape Verde and to Puerto Rico, about 570 and 4000 km, respectively, the proportion of Ca-bound P (Ca-P), including both apatite and non-apatite forms, decreased from 68-73% to 50-71% and to 21-37%. The changes were accompanied by increased iron/aluminum-bound P proportion from 14-25% to 23-46% and to 44-73%, correspondingly. Laboratory simulation experiments suggest that the changes in P speciation can be ascribed to increasing degrees of particle sorting and atmospheric acidification during dust transport. The presence of relatively soluble non-apatite Ca-P in the Cape Verde dust but not in the Puerto Rico dust is consistent with the higher P water solubility of the former than the latter. Our findings provide insights into the controls of atmospheric processes on P speciation, solubility, and stability in Saharan dust.
英文关键词	Saharan dust phosphorus speciation XANES spectroscopy trans-Atlantic dust transport
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000699957900053
WOS关键词	LONG-RANGE TRANSPORT ; ND-HF ISOTOPES ; AFRICAN DUST ; MINERAL DUST ; BIOAVAILABLE PHOSPHORUS ; ATMOSPHERIC INPUT ; PARTICLE-SIZE ; SPECIATION ; SOIL ; DEPOSITION
WOS类目	Engineering, Environmental ; Environmental Sciences
WOS研究方向	Engineering ; Environmental Sciences & Ecology
来源机构	Hebrew University of Jerusalem
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363166
作者单位	[Dam, Than T. N.; Zhu, Mengqiang] Univ Wyoming, Dept Ecosyst Sci & Management, Laramie, WY 82071 USA; [Angert, Alon; Bigio, Laura] Hebrew Univ Jerusalem, Inst Earth Sci, IL-9190401 Jerusalem, Israel; [Krom, Michael D.] Univ Haifa, Leon H Charney Sch Marine Sci, Dept Marine Biol, Morris Kahn Marine Res Stn, IL-3498838 Haifa, Israel; [Krom, Michael D.] Univ Leeds, Sch Earth & Environm, Leeds LS2 9JT, W Yorkshire, England; [Hu, Yongfeng] Univ Saskatchewan, Canadian Light Source Inc, Saskatoon, SK S7N 2V3, Canada; [Beyer, Kevin A.] Argonne Natl Lab, Xray Sci Div, Adv Photon Source, Lemont, IL 60439 USA; [Mayol-Bracero, Olga L.; Santos-Figueroa, Gilmarie] Univ Puerto Rico, Dept Environm Sci, Rio Piedras, PR 00925 USA; [Pio, Casimiro] Univ Aveiro, Ctr Environm & Marine Studies, P-3810193 Aveiro, Portugal
推荐引用方式 GB/T 7714	Dam, Than T. N.,Angert, Alon,Krom, Michael D.,et al. X-ray Spectroscopic Quantification of Phosphorus Transformation in Saharan Dust during Trans-Atlantic Dust Transport[J]. Hebrew University of Jerusalem,2021,55(18):12694-12703.
APA	Dam, Than T. N..,Angert, Alon.,Krom, Michael D..,Bigio, Laura.,Hu, Yongfeng.,...&Zhu, Mengqiang.(2021).X-ray Spectroscopic Quantification of Phosphorus Transformation in Saharan Dust during Trans-Atlantic Dust Transport.ENVIRONMENTAL SCIENCE & TECHNOLOGY,55(18),12694-12703.
MLA	Dam, Than T. N.,et al."X-ray Spectroscopic Quantification of Phosphorus Transformation in Saharan Dust during Trans-Atlantic Dust Transport".ENVIRONMENTAL SCIENCE & TECHNOLOGY 55.18(2021):12694-12703.