Design Construction of an Atmospheric Chamber for the Qualitative Study of an Unknown Compound Generated by the Photochemical Reaction Between Isoprene and NOx
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Authors
Costales, Consuala C.
Issue Date
1999
Type
Thesis
Language
en_US
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Abstract
Design and construction of a 1000L atmospheric chamber was completed at Western
Michigan University for the purpose of qualitative analysis of an unknown compound
generated by the photochemical reaction between NOx and isoprene. Preliminary results
show a fair amount of experimental reproducibility in the overall reaction pathways of
the binary system. Qualitative analysis utilized GC/MS. Once the compound was
generated in the chamber a sample was cryogenically trapped onto a section of GC
column and taken to the GC/MS. To date, the qualitative analysis of the unknown has
been unsuccessful due to difficulty in sample transportation. However, these results
show that the compound may be formed from methylvinylketone and because of its
behavior on the gas chromatograph columns it is suspected to be another PAN
compound. Its stability also suggests that it may be a form of PAN with an OH group
attached. Overall, further investigation is needed and improvement in the cryogenic
trapping and transportation of the sample from the chamber to the GC/MS must be made
in order to get a structural model of the unknown compound.
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