In situ transformation of an aqueous amino acid at high pressures and temperatures
The stability and transformation of aqueous amino acid at high pressures and temperatures are very important in terms of the formation of interstellar organic matter, delivery of organic compounds of meteorolites, and prebiotic organic synthesis. We studied aqueous alanine saturated solid solution a...
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ftpekinguniv:oai:localhost:20.500.11897/398023 2023-05-15T14:00:44+02:00 In situ transformation of an aqueous amino acid at high pressures and temperatures Chen, Jinyang Cheng, Hongbin Zhu, Man Jin, Luilang Zheng, Haifei Chen, JY (reprint author), Shanghai Univ, Sch Environm & Chem Engn, Shanghai 201800, Peoples R China. Shanghai Univ, Sch Environm & Chem Engn, Shanghai 201800, Peoples R China. Peking Univ, Dept Geol, Beijing 100871, Peoples R China. 2007 https://hdl.handle.net/20.500.11897/398023 en eng geochemical journal GEOCHEMICAL JOURNAL.2007,41,(4),283-290. 972879 0016-7002 http://hdl.handle.net/20.500.11897/398023 1880-5973 WOS:000249189600006 SCI in situ amino acid visualization Raman spectroscopy high pressure and temperature INTERSTELLAR ICE ANALOGS PEPTIDE-BOND FORMATION FLUID INCLUSIONS ANTARCTIC MICROMETEORITES CARBONACEOUS METEORITES MURCHISON METEORITE RAMAN-SPECTROSCOPY COMETARY DELIVERY ORGANIC-COMPOUNDS GLYCINE Journal 2007 ftpekinguniv https://doi.org/20.500.11897/398023 2021-08-01T10:24:03Z The stability and transformation of aqueous amino acid at high pressures and temperatures are very important in terms of the formation of interstellar organic matter, delivery of organic compounds of meteorolites, and prebiotic organic synthesis. We studied aqueous alanine saturated solid solution at pressures of several gigapascals and temperatures up to 500 degrees C using an external heating hydrothermal diamond anvil cell (HDAC) through in situ observation and Raman spectroscopy. Five samples of initial pressures of 1.23, 1.98, 2.69, 2.78, and 3.67 GPa, which cause transformation from liquid solution to solid phase, are studied. The transformations of aqueous alanine solution are highly reliant on pressure, and with higher initial pressures, the transitions are retarded to higher temperatures. The melted solid alanine solution of the lowest initial pressure separates out a non-eutectic phase which takes on the characteristic of macro-organic matter, which indicates that amino acids can oligomerize or even polymerize at high pressures and temperatures. As for the highest initial pressure, the solid alanine solution remains almost intact up to the highest temperature of 500 degrees C. The results show that pressure should be required to understand many occurrences of amino acids in space and meteorites. Geochemistry & Geophysics SCI(E) 0 ARTICLE 4 283-290 41 Journal/Newspaper Antarc* Antarctic Peking University Institutional Repository (PKU IR) Antarctic Anvil ENVELOPE(-64.267,-64.267,-65.239,-65.239) Murchison ENVELOPE(144.250,144.250,-67.317,-67.317) |
institution |
Open Polar |
collection |
Peking University Institutional Repository (PKU IR) |
op_collection_id |
ftpekinguniv |
language |
English |
topic |
in situ amino acid visualization Raman spectroscopy high pressure and temperature INTERSTELLAR ICE ANALOGS PEPTIDE-BOND FORMATION FLUID INCLUSIONS ANTARCTIC MICROMETEORITES CARBONACEOUS METEORITES MURCHISON METEORITE RAMAN-SPECTROSCOPY COMETARY DELIVERY ORGANIC-COMPOUNDS GLYCINE |
spellingShingle |
in situ amino acid visualization Raman spectroscopy high pressure and temperature INTERSTELLAR ICE ANALOGS PEPTIDE-BOND FORMATION FLUID INCLUSIONS ANTARCTIC MICROMETEORITES CARBONACEOUS METEORITES MURCHISON METEORITE RAMAN-SPECTROSCOPY COMETARY DELIVERY ORGANIC-COMPOUNDS GLYCINE Chen, Jinyang Cheng, Hongbin Zhu, Man Jin, Luilang Zheng, Haifei In situ transformation of an aqueous amino acid at high pressures and temperatures |
topic_facet |
in situ amino acid visualization Raman spectroscopy high pressure and temperature INTERSTELLAR ICE ANALOGS PEPTIDE-BOND FORMATION FLUID INCLUSIONS ANTARCTIC MICROMETEORITES CARBONACEOUS METEORITES MURCHISON METEORITE RAMAN-SPECTROSCOPY COMETARY DELIVERY ORGANIC-COMPOUNDS GLYCINE |
description |
The stability and transformation of aqueous amino acid at high pressures and temperatures are very important in terms of the formation of interstellar organic matter, delivery of organic compounds of meteorolites, and prebiotic organic synthesis. We studied aqueous alanine saturated solid solution at pressures of several gigapascals and temperatures up to 500 degrees C using an external heating hydrothermal diamond anvil cell (HDAC) through in situ observation and Raman spectroscopy. Five samples of initial pressures of 1.23, 1.98, 2.69, 2.78, and 3.67 GPa, which cause transformation from liquid solution to solid phase, are studied. The transformations of aqueous alanine solution are highly reliant on pressure, and with higher initial pressures, the transitions are retarded to higher temperatures. The melted solid alanine solution of the lowest initial pressure separates out a non-eutectic phase which takes on the characteristic of macro-organic matter, which indicates that amino acids can oligomerize or even polymerize at high pressures and temperatures. As for the highest initial pressure, the solid alanine solution remains almost intact up to the highest temperature of 500 degrees C. The results show that pressure should be required to understand many occurrences of amino acids in space and meteorites. Geochemistry & Geophysics SCI(E) 0 ARTICLE 4 283-290 41 |
author2 |
Chen, JY (reprint author), Shanghai Univ, Sch Environm & Chem Engn, Shanghai 201800, Peoples R China. Shanghai Univ, Sch Environm & Chem Engn, Shanghai 201800, Peoples R China. Peking Univ, Dept Geol, Beijing 100871, Peoples R China. |
format |
Journal/Newspaper |
author |
Chen, Jinyang Cheng, Hongbin Zhu, Man Jin, Luilang Zheng, Haifei |
author_facet |
Chen, Jinyang Cheng, Hongbin Zhu, Man Jin, Luilang Zheng, Haifei |
author_sort |
Chen, Jinyang |
title |
In situ transformation of an aqueous amino acid at high pressures and temperatures |
title_short |
In situ transformation of an aqueous amino acid at high pressures and temperatures |
title_full |
In situ transformation of an aqueous amino acid at high pressures and temperatures |
title_fullStr |
In situ transformation of an aqueous amino acid at high pressures and temperatures |
title_full_unstemmed |
In situ transformation of an aqueous amino acid at high pressures and temperatures |
title_sort |
in situ transformation of an aqueous amino acid at high pressures and temperatures |
publisher |
geochemical journal |
publishDate |
2007 |
url |
https://hdl.handle.net/20.500.11897/398023 |
long_lat |
ENVELOPE(-64.267,-64.267,-65.239,-65.239) ENVELOPE(144.250,144.250,-67.317,-67.317) |
geographic |
Antarctic Anvil Murchison |
geographic_facet |
Antarctic Anvil Murchison |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
SCI |
op_relation |
GEOCHEMICAL JOURNAL.2007,41,(4),283-290. 972879 0016-7002 http://hdl.handle.net/20.500.11897/398023 1880-5973 WOS:000249189600006 |
op_doi |
https://doi.org/20.500.11897/398023 |
_version_ |
1766270070356443136 |