干旱区生态环境知识资源中心(Arid): Search for Ammonia in Martian Soils with Curiosity‘s SAM Instrument.

Arid

报告编号	N20130009148
	Search for Ammonia in Martian Soils with Curiosity‘s SAM Instrument.
	Wray, J. J; Archer, P. D; Brinckerhoff, W. B; Eigenbrode, J. L; Franz, H. B; Freissinet, C; Glavin, D. P; Mahaffy, P. R; McKay, C. P; Navarro-Gonzalez, R; Steele, A; Webster, C. R.
英文摘要	Nitrogen is the second or third most abundant constituent of the Martian atmosphere (1,2). It is a bioessential element, a component of all amino acids and nucleic acids that make up proteins, DNA and RNA, so assessing its availability is a key part of Curiosity’s mission to characterize Martian habitability. In oxidizing desert environments it is found in nitrate salts that co-occur with perchlorates (e.g., 3), inferred to be widespread in Mars soils (4-6). A Mars nitrogen cycle has been proposed (7), yet prior missions have not constrained the state of surface N. Here we explore Curiosity’s ability to detect N compounds using data from the rover’s first solid sample. Companion abstracts describe evidence for nitrates (8) and for nitriles (C(triple bond)N) (9); we focus here on nonnitrile, reduced-N compounds as inferred from bonded N-H. The simplest such compound is ammonia (NH3), found in many carbonaceous chondrite meteorites in NH4(+) salts and organic compounds (e.g., 10).
英文关键词	Ammonia Mars surface Soils Mars surface samples Curiosity rover Nitrogen compounds Nitrogen Nitrates Meteorites Perchlorates Proteins Amino acids
出版年	2013
语种	英语
国家	United States
URL	http://r.cnki.net/KCMS/detail/detail.aspx?DbCode=KJBG&dbname=KJBGW&filename=59fb34fb31c97d1d54a066f3
来源机构	National Aeronautics and Space Administration
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/273905
推荐引用方式 GB/T 7714	Wray, J. J,Archer, P. D,Brinckerhoff, W. B,等. Search for Ammonia in Martian Soils with Curiosity‘s SAM Instrument.,2013.