Arid
DOI10.1017/S1473550410000443
Analysis of Mars analogue soil samples using solid-phase microextraction, organic solvent extraction and gas chromatography/mass spectrometry
Orzechowska, G. E.1; Kidd, R. D.1; Foing, B. H.2; Kanik, I.1; Stoker, C.3; Ehrenfreund, P.4,5
通讯作者Orzechowska, G. E.
来源期刊INTERNATIONAL JOURNAL OF ASTROBIOLOGY
ISSN1473-5504
EISSN1475-3006
出版年2011
卷号10期号:3页码:209-219
英文摘要

Polycyclic aromatic hydrocarbons (PAHs) are robust and abundant molecules in extraterrestrial environments. They are found ubiquitously in the interstellar medium and have been identified in extracts of meteorites collected on Earth. PAHs are important target molecules for planetary exploration missions that investigate the organic inventory of planets, moons and small bodies. This study is part of an interdisciplinary preparation phase to search for organic molecules and life on Mars. We have investigated PAH compounds in desert soils to determine their composition, distribution and stability. Soil samples (Mars analogue soils) were collected at desert areas of Utah in the vicinity of the Mars Desert Research Station (MDRS), in the Arequipa region in Peru and from the Jutland region of Denmark. The aim of this study was to optimize the solid-phase microextraction (SPME) method for fast screening and determination of PAHs in soil samples. This method minimizes sample handling and preserves the chemical integrity of the sample. Complementary liquid extraction was used to obtain information on five-and six-ring PAH compounds. The measured concentrations of PAHs are, in general, very low, ranging from 1 to 60 ng g-1. The texture of soils is mostly sandy loam with few samples being 100 % silt. Collected soils are moderately basic with pH values of 8-9 except for the Salten Skov soil, which is slightly acidic. Although the diverse and variable microbial populations of the samples at the sample sites might have affected the levels and variety of PAHs detected, SPME appears to be a rapid, viable field sampling technique with implications for use on planetary missions.


英文关键词chromatography gas chromatograph/mass spectrometer (GC/MS) Mars polycyclic aromatic hydrocarbons (PAHs) solid-phase microextraction (SPME)
类型Article
语种英语
国家USA ; Netherlands
收录类别SCI-E
WOS记录号WOS:000291609600006
WOS关键词POLYCYCLIC AROMATIC-HYDROCARBONS ; MARTIAN SOIL ; PAHS ; SEARCH ; SURFACE ; LIFE ; HABITABILITY ; AIR ; MS
WOS类目Astronomy & Astrophysics ; Biology ; Geosciences, Multidisciplinary
WOS研究方向Astronomy & Astrophysics ; Life Sciences & Biomedicine - Other Topics ; Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/168580
作者单位1.CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA;
2.European Space Agcy, ESTEC SRE S, NL-2200 AG Noordwijk, Netherlands;
3.NASA, Ames Res Ctr, Moffett Field, CA 94035 USA;
4.George Washington Univ, Inst Space Policy, Washington, DC 20052 USA;
5.Leiden Univ, Leiden Inst Chem, NL-2300 RA Leiden, Netherlands
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Orzechowska, G. E.,Kidd, R. D.,Foing, B. H.,et al. Analysis of Mars analogue soil samples using solid-phase microextraction, organic solvent extraction and gas chromatography/mass spectrometry[J],2011,10(3):209-219.
APA Orzechowska, G. E.,Kidd, R. D.,Foing, B. H.,Kanik, I.,Stoker, C.,&Ehrenfreund, P..(2011).Analysis of Mars analogue soil samples using solid-phase microextraction, organic solvent extraction and gas chromatography/mass spectrometry.INTERNATIONAL JOURNAL OF ASTROBIOLOGY,10(3),209-219.
MLA Orzechowska, G. E.,et al."Analysis of Mars analogue soil samples using solid-phase microextraction, organic solvent extraction and gas chromatography/mass spectrometry".INTERNATIONAL JOURNAL OF ASTROBIOLOGY 10.3(2011):209-219.
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