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Title:
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Volatile organic compounds and aerosols in air: development of sampling methods, chemical analysis and modelling
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Author(s):
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Published by:
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Publication date:
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ECN
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1-4-1999
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ECN report number:
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Document type:
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ECN-R--99-001
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Other
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Number of pages:
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Full text:
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37
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Download PDF
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Abstract:
Emissions of traffic contribute to a large extent to the health effectsof air pollution. It is still uncertain how much of these effects are due to
aerosols and whether chemical composition or just the number of particles are
important. The interactions between gaseous and particulate matter in the
atmosphere requires that scientific studies will have to deal with those
interdependencies. Computer models will be very useful here, but these models
must be evaluated using measurements. Good and useful measurements to test
these models are scarce. Sampling and analysis of organic compounds in
gaseous and particulate phase in the atmosphere is a complex job. To study
the relative importance of the possible processes in the atmosphere in the
first half hour after emission of organic compounds, measurements and
computer models to test (the gaps in) our knowledge are required. In this
report the analytical and sampling methods deployed or developed to do this
are described. During an experiment along the A9 highway in the Netherlands
the sampling and analysis techniques were tested. Within certain limitations
all methods deployed are adequate for use in further research. Modelling
tools are developed and adopted to describe the dispersion process, chemical
reactions, deposition and aerosol processes. 18 refs.
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