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DOI | 10.1038/s41561-020-0556-7 |
Supply of phosphate to early Earth by photogeochemistry after meteoritic weathering | |
Ritson, Dougal J.1; Mojzsis, Stephen J.2,3; Sutherland, John. D.1 | |
2020-03-23 | |
发表期刊 | NATURE GEOSCIENCE |
ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2020 |
卷号 | 13期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | England; USA; Hungary |
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 (Ca-10(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 (PO43-) in extant biology and the apparent requirement for PO43- 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 PO43- 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 P-31 nuclear magnetic resonance spectroscopy to monitor the progress of reactions. Our experimental findings provide a cosmochemically and geochemically plausible means for supply of PO43- that was widely available to prebiotic chemistry and nascent life on early Earth and potentially on other planets. Reduced phosphorus species delivered by meteorites can be oxidized in reactions with hydrogen sulfide under ultraviolet light to provide a ready supply of phosphate to support prebiotic chemistry, as demonstrated by experiments. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000521523500001 |
WOS关键词 | HYDRATED ELECTRON ; IRON-METEORITES ; LATE VENEER ; PHOSPHORUS ; ORIGIN ; PHOSPHORYLATION ; SCHREIBERSITE ; ENVIRONMENT ; PRECURSORS ; CORROSION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/249287 |
专题 | 地球科学 气候变化 |
作者单位 | 1.MRC, Mol Biol Lab, Cambridge Biomed Campus, Cambridge, England; 2.Univ Colorado, Dept Geol Sci, Boulder, CO 80309 USA; 3.Hungarian Acad Sci, Res Ctr Astron & Earth Sci, Inst Geol & Geochem Res, Budapest, Hungary |
推荐引用方式 GB/T 7714 | Ritson, Dougal J.,Mojzsis, Stephen J.,Sutherland, John. D.. Supply of phosphate to early Earth by photogeochemistry after meteoritic weathering[J]. NATURE GEOSCIENCE,2020,13(5). |
APA | Ritson, Dougal J.,Mojzsis, Stephen J.,&Sutherland, John. D..(2020).Supply of phosphate to early Earth by photogeochemistry after meteoritic weathering.NATURE GEOSCIENCE,13(5). |
MLA | Ritson, Dougal J.,et al."Supply of phosphate to early Earth by photogeochemistry after meteoritic weathering".NATURE GEOSCIENCE 13.5(2020). |
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