Thermal behaviour of carbonaceous aerosol from a continental background site

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43 Citations (Scopus)

Abstract

In this paper thermal profiling (programmed heating in oxygen and simultaneous recording of evolved carbon dioxide) is used in combination with sample pre-treatment (heating and aqueous extraction) for the characterisation of aerosol particles from a continental background site. It is found that the thermal profile of fine aerosol (10μm) look almost identical, but are markedly different from that of the fine aerosol, implying different origin for carbonaceous particles in the fine and coarse mode. The distribution of carbon is dominated by fine particles, on average 87% of the total carbon are in this size range. The results are interpreted as an implication that the bulk of organic compounds in fine mode aerosol may be air polymers having a significant coverage of polar, hydrophilic functional groups. Copyright (C) 1999 Elsevier Science Ltd.

Original languageEnglish
Pages (from-to)823-831
Number of pages9
JournalAtmospheric Environment
Volume34
Issue number5
DOIs
Publication statusPublished - Jan 2000

Fingerprint

Aerosols
aerosol
Particles (particulate matter)
Heating
Carbon
heating
Organic compounds
Functional groups
carbon
Carbon dioxide
range size
functional group
organic compound
polymer
carbon dioxide
Oxygen
Hot Temperature
Polymers
Air
oxygen

Keywords

  • Background aerosol
  • Black carbon
  • Organic carbon
  • Thermal analysis
  • Water-solubility

ASJC Scopus subject areas

  • Atmospheric Science
  • Environmental Science(all)
  • Pollution

Cite this

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abstract = "In this paper thermal profiling (programmed heating in oxygen and simultaneous recording of evolved carbon dioxide) is used in combination with sample pre-treatment (heating and aqueous extraction) for the characterisation of aerosol particles from a continental background site. It is found that the thermal profile of fine aerosol (10μm) look almost identical, but are markedly different from that of the fine aerosol, implying different origin for carbonaceous particles in the fine and coarse mode. The distribution of carbon is dominated by fine particles, on average 87{\%} of the total carbon are in this size range. The results are interpreted as an implication that the bulk of organic compounds in fine mode aerosol may be air polymers having a significant coverage of polar, hydrophilic functional groups. Copyright (C) 1999 Elsevier Science Ltd.",
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AU - Gelencsér, A.

AU - Hoffer, A.

AU - Molnár, A.

AU - Krivácsy, Z.

AU - Kiss, G.

AU - Mészáros, E.

PY - 2000/1

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N2 - In this paper thermal profiling (programmed heating in oxygen and simultaneous recording of evolved carbon dioxide) is used in combination with sample pre-treatment (heating and aqueous extraction) for the characterisation of aerosol particles from a continental background site. It is found that the thermal profile of fine aerosol (10μm) look almost identical, but are markedly different from that of the fine aerosol, implying different origin for carbonaceous particles in the fine and coarse mode. The distribution of carbon is dominated by fine particles, on average 87% of the total carbon are in this size range. The results are interpreted as an implication that the bulk of organic compounds in fine mode aerosol may be air polymers having a significant coverage of polar, hydrophilic functional groups. Copyright (C) 1999 Elsevier Science Ltd.

AB - In this paper thermal profiling (programmed heating in oxygen and simultaneous recording of evolved carbon dioxide) is used in combination with sample pre-treatment (heating and aqueous extraction) for the characterisation of aerosol particles from a continental background site. It is found that the thermal profile of fine aerosol (10μm) look almost identical, but are markedly different from that of the fine aerosol, implying different origin for carbonaceous particles in the fine and coarse mode. The distribution of carbon is dominated by fine particles, on average 87% of the total carbon are in this size range. The results are interpreted as an implication that the bulk of organic compounds in fine mode aerosol may be air polymers having a significant coverage of polar, hydrophilic functional groups. Copyright (C) 1999 Elsevier Science Ltd.

KW - Background aerosol

KW - Black carbon

KW - Organic carbon

KW - Thermal analysis

KW - Water-solubility

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