Polycyclic aromatic hydrocarbons and amino acids in meteorites and ice samples from LaPaz Icefield, Antarctica
Abstract— –We have analyzed ice samples and meteorites from the LaPaz region of Antarctica to investigate the composition of polycyclic aromatic hydrocarbons (PAHs) and amino acids with the goal to understand whether or not there is a compositional relationship between the two reservoirs. Four LL5 o...
Published in: | Meteoritics & Planetary Science |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2008
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1111/j.1945-5100.2008.tb01021.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1945-5100.2008.tb01021.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1945-5100.2008.tb01021.x |
id |
crwiley:10.1111/j.1945-5100.2008.tb01021.x |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1111/j.1945-5100.2008.tb01021.x 2024-06-23T07:46:09+00:00 Polycyclic aromatic hydrocarbons and amino acids in meteorites and ice samples from LaPaz Icefield, Antarctica BOTTA, Oliver MARTINS, Zita EMMENEGGER, Christian DWORKIN, Jason P. GLAVIN, Daniel P. HARVEY, Ralph P. ZENOBI, Renato BADA, Jeffrey L. EHRENFREUND, Pascale 2008 http://dx.doi.org/10.1111/j.1945-5100.2008.tb01021.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1945-5100.2008.tb01021.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1945-5100.2008.tb01021.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Meteoritics & Planetary Science volume 43, issue 9, page 1465-1480 ISSN 1086-9379 1945-5100 journal-article 2008 crwiley https://doi.org/10.1111/j.1945-5100.2008.tb01021.x 2024-06-04T06:39:38Z Abstract— –We have analyzed ice samples and meteorites from the LaPaz region of Antarctica to investigate the composition of polycyclic aromatic hydrocarbons (PAHs) and amino acids with the goal to understand whether or not there is a compositional relationship between the two reservoirs. Four LL5 ordinary chondrites (OCs) and one CK carbonaceous chondrite were collected as part of the 2003/2004 ANSMET season. Ice samples collected from directly underneath the meteorites were extracted. In addition, exhaust particles from the snowmobiles used during the expedition were collected to investigate possible contributions from this source. The meteorite samples, the particulate matter and solid‐state extracts of the ice samples and the exhaust filters were subjected to two‐step laser mass spectrometry (L2MS) to investigate the PAH composition. For amino acids analysis, the meteorites were extracted with water and acid hydrolyzed, and the extracts were analyzed with offline OPA/NAC derivatization combined with liquid chromatography with UV fluorescence detection and time of flight mass spectrometry (LC‐FD/ToF‐MS). PAHs in the particulate matter of the ice were found to be qualitatively similar to the meteorite samples, indicating that micron‐sized grains of the meteorite may be embedded in the ice samples. The concentration levels of dissolved PAHs in all the ice samples were found to be below the detection limit of the L2MS. The PAH composition of the snowmobile exhaust is significantly different to the one in particulate matter, making it an unlikely source of contamination for Antarctic meteorites. The amino acids glycine, β‐alanine and γ‐amino‐ n ‐butyric acid that were detected at concentrations of 3 to 19 parts per billion (ppb) are probably indigenous to the Antarctic meteorites. Some of the LaPaz ice samples were also found to contain amino acids at concentration levels of 1 to 33 parts per trillion (ppt), in particular α‐aminoisobutyric acid (AIB), an abundant non‐protein amino acid of extraterrestrial origin ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Wiley Online Library Antarctic The Antarctic Meteoritics & Planetary Science 43 9 1465 1480 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract— –We have analyzed ice samples and meteorites from the LaPaz region of Antarctica to investigate the composition of polycyclic aromatic hydrocarbons (PAHs) and amino acids with the goal to understand whether or not there is a compositional relationship between the two reservoirs. Four LL5 ordinary chondrites (OCs) and one CK carbonaceous chondrite were collected as part of the 2003/2004 ANSMET season. Ice samples collected from directly underneath the meteorites were extracted. In addition, exhaust particles from the snowmobiles used during the expedition were collected to investigate possible contributions from this source. The meteorite samples, the particulate matter and solid‐state extracts of the ice samples and the exhaust filters were subjected to two‐step laser mass spectrometry (L2MS) to investigate the PAH composition. For amino acids analysis, the meteorites were extracted with water and acid hydrolyzed, and the extracts were analyzed with offline OPA/NAC derivatization combined with liquid chromatography with UV fluorescence detection and time of flight mass spectrometry (LC‐FD/ToF‐MS). PAHs in the particulate matter of the ice were found to be qualitatively similar to the meteorite samples, indicating that micron‐sized grains of the meteorite may be embedded in the ice samples. The concentration levels of dissolved PAHs in all the ice samples were found to be below the detection limit of the L2MS. The PAH composition of the snowmobile exhaust is significantly different to the one in particulate matter, making it an unlikely source of contamination for Antarctic meteorites. The amino acids glycine, β‐alanine and γ‐amino‐ n ‐butyric acid that were detected at concentrations of 3 to 19 parts per billion (ppb) are probably indigenous to the Antarctic meteorites. Some of the LaPaz ice samples were also found to contain amino acids at concentration levels of 1 to 33 parts per trillion (ppt), in particular α‐aminoisobutyric acid (AIB), an abundant non‐protein amino acid of extraterrestrial origin ... |
format |
Article in Journal/Newspaper |
author |
BOTTA, Oliver MARTINS, Zita EMMENEGGER, Christian DWORKIN, Jason P. GLAVIN, Daniel P. HARVEY, Ralph P. ZENOBI, Renato BADA, Jeffrey L. EHRENFREUND, Pascale |
spellingShingle |
BOTTA, Oliver MARTINS, Zita EMMENEGGER, Christian DWORKIN, Jason P. GLAVIN, Daniel P. HARVEY, Ralph P. ZENOBI, Renato BADA, Jeffrey L. EHRENFREUND, Pascale Polycyclic aromatic hydrocarbons and amino acids in meteorites and ice samples from LaPaz Icefield, Antarctica |
author_facet |
BOTTA, Oliver MARTINS, Zita EMMENEGGER, Christian DWORKIN, Jason P. GLAVIN, Daniel P. HARVEY, Ralph P. ZENOBI, Renato BADA, Jeffrey L. EHRENFREUND, Pascale |
author_sort |
BOTTA, Oliver |
title |
Polycyclic aromatic hydrocarbons and amino acids in meteorites and ice samples from LaPaz Icefield, Antarctica |
title_short |
Polycyclic aromatic hydrocarbons and amino acids in meteorites and ice samples from LaPaz Icefield, Antarctica |
title_full |
Polycyclic aromatic hydrocarbons and amino acids in meteorites and ice samples from LaPaz Icefield, Antarctica |
title_fullStr |
Polycyclic aromatic hydrocarbons and amino acids in meteorites and ice samples from LaPaz Icefield, Antarctica |
title_full_unstemmed |
Polycyclic aromatic hydrocarbons and amino acids in meteorites and ice samples from LaPaz Icefield, Antarctica |
title_sort |
polycyclic aromatic hydrocarbons and amino acids in meteorites and ice samples from lapaz icefield, antarctica |
publisher |
Wiley |
publishDate |
2008 |
url |
http://dx.doi.org/10.1111/j.1945-5100.2008.tb01021.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1945-5100.2008.tb01021.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1945-5100.2008.tb01021.x |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Meteoritics & Planetary Science volume 43, issue 9, page 1465-1480 ISSN 1086-9379 1945-5100 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1945-5100.2008.tb01021.x |
container_title |
Meteoritics & Planetary Science |
container_volume |
43 |
container_issue |
9 |
container_start_page |
1465 |
op_container_end_page |
1480 |
_version_ |
1802644217290293248 |