<i>In situ</i> organic compound analysis on a meteorite surface by desorption electrospray ionization coupled with an Orbitrap mass spectrometer

Naraoka, Hiroshi; Hashiguchi, Minako

doi:10.1002/rcm.8121

Cited by 20 publications

(27 citation statements)

References 18 publications

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“…). Other compound homologues, in particular C n H m N and C n H m N 2 —with the exception of C n H 2 n –1 N 2 + —were not identified in this study, a finding in contrast with the evidence obtained in our previous study of the Murray meteorite (Naraoka and Hashiguchi ).…”

Section: Resultscontrasting

confidence: 99%

“…The present study, however, focused on a series of alkylated homologues having more than three continuous species, in order to understand their synthesis and evolution and compare with results of bulk analyses (Naraoka et al 2017). Other compound homologues, in particular C n H m N and C n H m N 2 -with the exception of C n H 2n-1 N 2 + -were not identified in this study, a finding in contrast with the evidence obtained in our previous study of the Murray meteorite (Naraoka and Hashiguchi 2018).…”

Section: Resultscontrasting

confidence: 80%

“…The different spatial resolutions of the various members of the C n H 2n-1 N 2 + homologues might be due to the spatial distributions of the different isomers resulting from the fact that they were generated via different synthetic pathways. Furthermore, other homologues of C n H m N + or C n H m N 2 + , such as C n H 2n-4 N + , were not clearly detected on the surface of the Murchison meteorite, a result that is in contrast with those obtained in a DESI/ HRMS analysis performed on the Murray meteorite, which belongs to the same CM2 class as the Murchison meteorite (Naraoka and Hashiguchi 2018). This result suggests that in CM2, chondrites exist differences in the spatial distributions or concentrations of members of the C n H 2n-1 N 2 + homologues and of other CHN-type compounds.…”

Section: Spatial Distributions Of the C N H 2n-1 N 2 + And C N H 2n Ncontrasting

confidence: 93%

“…Differently from the cases of LDI-MS and SIMS, desorption electrospray ionization (DESI), a technique developed in 2004 (Tak at et al 2004), enables researchers to perform a nondestructive mass analysis on a sample surface without the need for a specific environment (e.g., high vacuum). In our previous study, we first conducted in situ two-dimensional (2-D) molecular imaging using the DESI technique coupled with HRMS on the Murray meteorite, which is a CM2 chondrite (Naraoka and Hashiguchi 2018). We then employed DESI 2-D molecular imaging, with high precision and resolution, combined with a hybrid quadrupole-Orbitrap MS to investigate the spatial distribution of SOM.…”

Section: Introductionmentioning

confidence: 99%

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High‐mass resolution molecular imaging of organic compounds on the surface of Murchison meteorite

Hashiguchi

Naraoka

2018

Meteorit & Planetary Scien

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High‐resolution mass spectrometry (HRMS) imaging by desorption electrospray ionization (DESI) coupled with Orbitrap MS using methanol (MeOH) spray was performed on a fragment of the Murchison (CM2) meteorite in this study. Homologues of CnH2n–1N2+ (n = 7–9) and CnH2nNO+ (n = 9–14) were detected on the sample surface by the imaging. A high‐performance liquid chromatography (HPLC)/HRMS analysis of MeOH extracts from the sample surface after DESI/HRMS imaging indicated that the CnH2n–1N2+ homologues corresponds to alkylimidazole, and that a few isomers of the CnH2nNO+ homologues present in the sample. The alkylimidazoles and CnH2nNO+ homologues displayed different spatial distributions on the surface of the Murchison fragment, indicating chromatographic separation effects during aqueous alteration. Moreover, the distribution pattern of compounds is also different among homologues. This is probably also resulting from the separation of isomers by similar chromatographic effects, or different synthetic pathways. Alkylimidazoles and the CnH2nNO+ homologues are mainly distributed in the matrix region of the Murchison by mineralogical observations, which is consistent with previous reports. Altered minerals (e.g., Fe‐oxide, Fe‐sulfide, and carbonates) occurred in this region. However, no clear relationship was found between these minerals and the organic compounds detected by DESI/HRMS imaging. Although this result might be due to scale differences between the spatial resolution of DESI/HRMS imaging and the grain size in the matrix of the Murchison, our results would indicate that alkylimidazoles and the CnH2nNO+ homologues in the Murchison fragment were mainly synthesized by different processes from hydrothermal alteration on the parent body.

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Section: Resultscontrasting

confidence: 99%

Section: Resultscontrasting

confidence: 80%

Section: Spatial Distributions Of the C N H 2n-1 N 2 + And C N H 2n Ncontrasting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

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High‐mass resolution molecular imaging of organic compounds on the surface of Murchison meteorite

Hashiguchi

Naraoka

2018

Meteorit & Planetary Scien

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“…; Sugahara et al. ), as well as in situ molecular analysis by desorption electrospray ionization coupled with high‐resolution mass spectrometry (Naraoka and Hashiguchi ).…”

Section: Discussionmentioning

confidence: 99%

Further characterization of carbonaceous materials in Hayabusa‐returned samples to understand their origin

Uesugi

Ito

Yabuta

et al. 2019

Meteorit & Planetary Scien

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Carbonaceous materials in the sample catcher of the Hayabusa spacecraft were assigned as category 3 particles. We investigated the category 3 particles with a suite of in situ microanalytical methods. Possible contaminants collected from the cleanrooms of the spacecraft assembly and extraterrestrial sample curation center (ESCuC) were also analyzed in the same manner as category 3 particles for comparison. Our data were integrated with those of the preliminary examination team for category 3 particles. Possible origins for the category 3 particles include contamination before and after the operation of the Hayabusa spacecraft.

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Recent Advances in Atmospheric Ionization Mass Spectrometry: Developments and Applications

Cao

Guo

2019

Chin. J. Chem.

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When did you start the research about mass spectrometry?We paid attention to mass spectrometry and then designed a new method, called intermittent electrospray for mass spectrometry, dating back to 18 years ago. It has the property of high sensitivity and advantages for protein analysis.Why do you get into mass spectrometry? Could you please share some experiences with our readers?For passion and responsibility. No matter what happens, just always keep thinking.What is the most important personality for scientific research?Forward‐looking vision, keen insight, divergent thinking and down‐to‐earth work.What is the most favorite chemistry developed in your research group?We have been working on detecting active transient intermediates and organic reaction mechanisms. It is a big challenge for us initially because of weak foundation, but every time we put all efforts to find problem and solve it.How do you deal with the relationship with your students?Accept and make suggestions like friends.What are your research interests focus on recently?Recently, our group have focused on the development of novel and efficient mass spectrometry technologies like atmospheric ionization mass spectrometry to settle some unsolved problems in analytical chemistry, organic chemistry and biological researches.

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In situ organic compound analysis on a meteorite surface by desorption electrospray ionization coupled with an Orbitrap mass spectrometer

Cited by 20 publications

References 18 publications

High‐mass resolution molecular imaging of organic compounds on the surface of Murchison meteorite

High‐mass resolution molecular imaging of organic compounds on the surface of Murchison meteorite

Further characterization of carbonaceous materials in Hayabusa‐returned samples to understand their origin

Recent Advances in Atmospheric Ionization Mass Spectrometry: Developments and Applications

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