| Evidence for photochemical production of reactive oxygen species in desert soils | |
| Georgiou, Christos D.1; Sun, Henry J.2; Mckay, Christopher P.3; Grintzalis, Konstantinos1; Papapostolou, Ioannis1; Zisimopoulos, Dimitrios1; Panagiotidis, Konstantinos1; Zhang, Gaosen4; Koutsopoulou, Eleni5; Christidis, George E.6 | |
| 刊名 | Nature communications
 |
| 2015-05-01 | |
| 卷号 | 6页码:11 |
| ISSN号 | 2041-1723 |
| DOI | 10.1038/ncomms8100 |
| 通讯作者 | Georgiou, christos d.(c.georgiou@upatras.gr) |
| 英文摘要 | The combination of intense solar radiation and soil desiccation creates a short circuit in the biogeochemical carbon cycle, where soils release significant amounts of co2 and reactive nitrogen oxides by abiotic oxidation. here we show that desert soils accumulate metal superoxides and peroxides at higher levels than non-desert soils. we also show the photogeneration of equimolar superoxide and hydroxyl radical in desiccated and aqueous soils, respectively, by a photo-induced electron transfer mechanism supported by their mineralogical composition. reactivity of desert soils is further supported by the generation of hydroxyl radical via aqueous extracts in the dark. our findings extend to desert soils the photogeneration of reactive oxygen species by certain mineral oxides and also explain previous studies on desert soil organic oxidant chemistry and microbiology. similar processes driven by ultraviolet radiation may be operating in the surface soils on mars. |
| 收录类别 | SCI |
| WOS关键词 | SINGLET OXYGEN ; ATACAMA DESERT ; MARTIAN SOIL ; MOLECULAR-OXYGEN ; OXIDE SURFACES ; HYDROGEN-PEROXIDE ; SUPEROXIDE IONS ; MOJAVE-DESERT ; PERCHLORATE ; TIO2 |
| WOS研究方向 | Science & Technology - Other Topics |
| WOS类目 | Multidisciplinary Sciences |
| 语种 | 英语 |
| 出版者 | NATURE PUBLISHING GROUP |
| WOS记录号 | WOS:000355531800001 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2555010 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Georgiou, Christos D. |
| 作者单位 | 1.Univ Patras, Dept Biol, Patras 26504, Greece 2.Desert Res Inst, Las Vegas, NV 89119 USA 3.NASA, Ames Res Ctr, Moffett Field, CA 94035 USA 4.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 73000, Peoples R China 5.Univ Patras, Lab Elect Microscopy & Microanal, Patras 26500, Greece 6.Tech Univ Crete, Dept Mineral Resources Engn, Khania 73100, Greece |
| 推荐引用方式 GB/T 7714 | Georgiou, Christos D.,Sun, Henry J.,Mckay, Christopher P.,et al. Evidence for photochemical production of reactive oxygen species in desert soils[J]. Nature communications,2015,6:11. |
| APA | Georgiou, Christos D..,Sun, Henry J..,Mckay, Christopher P..,Grintzalis, Konstantinos.,Papapostolou, Ioannis.,...&Margiolaki, Irene.(2015).Evidence for photochemical production of reactive oxygen species in desert soils.Nature communications,6,11. |
| MLA | Georgiou, Christos D.,et al."Evidence for photochemical production of reactive oxygen species in desert soils".Nature communications 6(2015):11. |
| 个性服务 |
| 查看访问统计 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论