NDLI: Molecular characterisation of organic material in air fine particles (PM<sub>10</sub>) using conventional and reactive pyrolysis-gas chromatography-mass spectrometry

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Molecular characterisation of organic material in air fine particles (PM₁₀) using conventional and reactive pyrolysis-gas chromatography-mass spectrometry

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Journal of Environmental Monitoring Vol - 4 Issue - 1

Journal of Environmental Monitoring Vol -3

Journal of Environmental Monitoring Vol -2

Molecular characterisation of organic material in air fine particles (PM₁₀) using conventional and reactive pyrolysis-gas chromatography-mass spectrometry

Content Provider	Royal Society of Chemistry (RSC)
Author	Prati, Silvia Vassura, Ivano Fabbri, Daniele
Copyright Year	2002
Abstract	Pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS) was applied to study the composition of organic constituents in air particulate matter (PM10) collected inside an industrial area. A few milligrams of sampling filters containing air particles were pyrolysed at 700 °C directly (conventional) or after the addition of a derivatising reagent (tetramethylammonium hydroxide, TMAH, for pyrolysis-methylation; hexamethyldisilazane, HMDS, for pyrolysis-silylation). Py-GC-MS was also applied to synthetic polymers (poly(styrene-co-isoprene), polylimonene and polypinene) and vegetation samples (coniferous pollen, bark and resin) to identify markers indicative of possible precursors. Pyrolysates of PM10 showed the same suite of compounds in all the four seasons, dominated by hydrocarbons like styrene, limonene and clusters of isomeric alkenes with 14, 15 and 16 carbon atoms. Pyrolysis products of natural origin, including furaldehyde, benzeneacetonitrile, dehydroabietin and other diterpenoids were found, while no specific markers of synthetic rubbers were detected. The principal products released from reactive pyrolysis of PM10 were methyl or trimethylsilyl (TMS) derivatives of 1,6-anhydroglucose (levoglucosan), fatty acids, dehydroabietic acid and other resin acids along with hydroxy (di)carboxylic acids. Possible sources of the detected products (e.g. pine forest, biomass combustion) are discussed.
Starting Page	210
Ending Page	215
Page Count	6
File Format	HTM / HTML PDF
ISSN	14640325
Volume Number	4
Issue Number	2
Journal	Journal of Environmental Monitoring
DOI	10.1039/b110340g
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	TMS Particulates Reagent Tetramethylammonium hydroxide Bis(trimethylsilyl)amine Pollen Resin Styrene Limonene Carbon Pyrolysis Furfural Trimethylsilyl Acid Biomass
Content Type	Text
Resource Type	Article
Subject	Public Health, Environmental and Occupational Health Management, Monitoring, Policy and Law

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Molecular characterisation of organic material in air fine particles (PM10) using conventional and reactive pyrolysis-gas chromatography-mass spectrometry

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