Document Detail


Development of a supercritical fluid extraction-gas chromatography-mass spectrometry method for the identification of highly polar compounds in secondary organic aerosols formed from biogenic hydrocarbons in smog chamber experiments.
MedLine Citation:
PMID:  16972055     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A new one-step method for the analysis of highly polar components of secondary organic aerosols (SOA) has been developed. This method should lead to a better understanding of SOA formation and evolution since it enables the compounds responsible for SOA formation to be identified. Since it is based on supercritical fluid extraction coupled to gas chromatography-mass spectrometry, it minimizes the analysis time and significantly enhances sensitivity, which makes it suitable for trace-level compounds, which are constituents of SOA. One of the key features of this method is the in situ derivatisation step: an online silylation allowing the measurement of highly polar, polyfunctional compounds, which is a prerequisite for the elucidation of chemical mechanisms. This paper presents the development of this analytical method and highlights its ability to address this major atmospheric issue through the analysis of SOA formed from the ozonolysis of a biogenic hydrocarbon (sabinene). Ozonolysis of sabinene was performed in a 6 m3 Teflon chamber. The aerosol components were derivatised in situ. More than thirty products, such as sabinaketone, sabinic acid and other multifunctional compounds including dicarboxylic acids and oxoacids, were measured. Nine of them were identified and quantified. The sensitivity and the linearity (0.91<R<0.98) of the method were both good and detection limits ranged from 1.2 to 6.4 ng for the investigated compounds.
Authors:
L Chiappini; E Perraudin; R Durand-Jolibois; J F Doussin
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2006-09-14
Journal Detail:
Title:  Analytical and bioanalytical chemistry     Volume:  386     ISSN:  1618-2642     ISO Abbreviation:  Anal Bioanal Chem     Publication Date:  2006 Nov 
Date Detail:
Created Date:  2006-11-20     Completed Date:  2007-02-15     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101134327     Medline TA:  Anal Bioanal Chem     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  1749-59     Citation Subset:  IM    
Affiliation:
Laboratoire Interuniversitaire des Systèmes Atmosphériques, UMR CNRS 7583, Universités Paris, 7 et 12, 61 avenue du Général de Gaulle, 94010, Créteil, France. chiappini@lisa.univ-paris12.fr
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MeSH Terms
Descriptor/Qualifier:
Aerosols
Chromatography, Supercritical Fluid / instrumentation*,  methods*
Gas Chromatography-Mass Spectrometry / instrumentation*,  methods*
Hydrocarbons / analysis*,  chemistry*
Molecular Structure
Monoterpenes / analysis,  chemistry
Smog / analysis*
Chemical
Reg. No./Substance:
0/Aerosols; 0/Hydrocarbons; 0/Monoterpenes; 0/Smog; 3387-41-5/sabinene

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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