A different behavior of hydrogen isotope exchange in aqueous solutions between two PAH isomers (fluoranthene and pyrene)
スポンサーリンク
概要
- 論文の詳細を見る
Compound-specific hydrogen isotope analysis of polycyclic aromatic hydrocarbons (PAHs) has been established at sub-nano molar level, using gas chromatography/pyrolysis/isotope ratio mass spectrometry (GC/pyrolysis/IRMS). The analytical precision of δD value is generally less than a few ‰ at >2nmol (i.e. 20ng H) injection of pyrene and fluoranthene calibrated with co-injected 30ng H of phenanthrene and chrysene. Hydrogen isotope exchange of pyrene and fluoranthene with water under neutral and acidic conditions was examined with relevance to hydrogen isotopic distribution of individual PAHs in carbonaceous chondrites. Hydrogen isotope exchange between PAH and water hardly occurred at 170℃ under neutral pH condition for 2 days. However, under acidic condition (pH=2), the isotope exchange reaction occurred, where hydrogens have exchanged more easily between pyrene and water relative to between fluoranthene and water. The kinetically different behavior between pyrene and fluoranthene coincides with the two-series PAH formation mechanisms in carbonaceous chondrites inferred from carbon isotopic compositions of PAH.
- 日本有機地球化学会の論文
- 2003-08-20
著者
-
NARAOKA Hiroshi
Department of Earth Sciences, Okayama University
-
Oba Yasuhiro
Department Of Chemistry Tokyo Metropolitan University
-
Naraoka Hiroshi
Department Of Chemistry Tokyo Metropolitan University
-
Naraoka Hiroshi
Department Of Chemistry Graduate School Of Science Tokyo Metropolitan University
関連論文
- Tanpopo: Astrobiology Exposure and Micrometeoroid Capture Experiments
- Vertical carbon isotope change in acetate in a surface sediment from the northwestern Pacific Ocean(Advances in molecular and stable isotope studies among the organic geochemical and related communities (Part I))
- Carbon isotopic composition of sterols in geochemical samples
- Molecular and isotopic distributions of polyaromatic hydrocarbons (PAHs) in Asuka carbonaceous chondrites (CM2) from Antarctica
- δ^C records of diploptene in the Japan Sea sediments over the past 25 kyr
- Carbon isotopic difference of saturated long-chain n-fatty acids between a terrestrial and a marine sediment
- Stable Carbon Isotope Measurement of Individual Fatty Acids Using Gas Chromatography/Isotope Ratio Monitoring Mass Spectrometry
- Molecular composition and compound-specific stable carbon isotope ratio of polycyclic aromatic hydrocarbons (PAHs) in the atmosphere in suburban areas
- A different behavior of hydrogen isotope exchange in aqueous solutions between two PAH isomers (fluoranthene and pyrene)
- Carbon isotopic compositions of individual long-chain n-fatty acids and n-alkanes in sediments from river to open ocean: Multiple origins for their occurrence
- Organic hydrogen-carbon isotope signatures of terrestrial higher plants during biosynthesis for distinctive photosynthetic pathways
- Carbon isotope fractionation during degradation of benzene, trichloroethene, and tetrachloroethene under ultraviolet light
- Analyses of organic compounds and carbon isotope ratio in the MUSES-C samples
- DELIVERY OF BIO-RELATED ORGANIC COMPOUNDS FROM METEORITES : A ROLE OF MACROMOLECULAR ORGANIC MATTER(Chemical Evolution, International Symposium on Origins of Life and Astrobiology)
- Carbon isotopic compositions of Antarctic carbonaceous chondrites with relevance to the alteration and existence of organic matter
- Carbon and hydrogen isotope fractionation of acetic acid during degradation by ultraviolet light
- Kinetic studies on dehydrogenation reaction of 5,6-dihydro-2,4(1H,3H)-pyrimidinediones in aqueous solution induced by argon arc plasma or hydrogen-oxygen flame.