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DOI	10.1038/s41561-020-0556-7
	Supply of phosphate to early Earth by photogeochemistry after meteoritic weathering
	Ritson D.J.; Mojzsis S.J.; Sutherland J.D.
发表日期	2020
ISSN	17520894
起始页码	344
结束页码	348
卷号	13 期号:5
英文摘要	During terrestrial differentiation, the relatively small amount of phosphorus that migrated to the lithosphere was incorporated into igneous rock, predominantly in the form of basic calcium orthophosphate (Ca10(PO4)6(OH,F,Cl)2, apatite). Yet the highly insoluble nature of calcium apatite presents a significant problem to those contemplating the origin of life given the foundational role of phosphate (PO4 3−) in extant biology and the apparent requirement for PO4 3− as a catalyst, buffer and reagent in prebiotic chemistry. Reduced meteorites such as enstatite chondrites are highly enriched in phosphide minerals, and upon reaction with water these minerals can release phosphorus species of various oxidation states. Here, we demonstrate how reduced phosphorus species can be fully oxidized to PO4 3− simply by the action of ultraviolet light on H2S/HS−. We used low-pressure Hg lamps to simulate ultraviolet output from the young Sun and 31P nuclear magnetic resonance spectroscopy to monitor the progress of reactions. Our experimental findings provide a cosmochemically and geochemically plausible means for supply of PO4 3− that was widely available to prebiotic chemistry and nascent life on early Earth and potentially on other planets. © 2020, The Author(s), under exclusive licence to Springer Nature Limited.
英文关键词	chemical weathering; Earth; geochemistry; meteorite; phosphate (inorganic)
语种	英语
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206822
作者单位	MRC Laboratory of Molecular Biology, Cambridge Biomedical Campus, Cambridge, United Kingdom; Department of Geological Sciences, University of Colorado, Boulder, CO, United States; Institute for Geological and Geochemical Research, Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences, Budapest, Hungary
推荐引用方式 GB/T 7714	Ritson D.J.,Mojzsis S.J.,Sutherland J.D.. Supply of phosphate to early Earth by photogeochemistry after meteoritic weathering[J],2020,13(5).
APA	Ritson D.J.,Mojzsis S.J.,&Sutherland J.D..(2020).Supply of phosphate to early Earth by photogeochemistry after meteoritic weathering.Nature Geoscience,13(5).
MLA	Ritson D.J.,et al."Supply of phosphate to early Earth by photogeochemistry after meteoritic weathering".Nature Geoscience 13.5(2020).