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Experimental determination of the partitioning coefficient of nopinone as a marker substance in organic aerosol / von Bettina Steitz. 2012
Content
Introduction
Atmospheric Aerosols
Aerosols and climate
Formation of secondary organic aerosol
Partitioning coefficient
Objectives of this work
Instrument description
Proton Transfer Reaction-Time of Flight-Mass Spectrometer (PTR-ToF-MS)
Working principle
Ionization
Mass resolution
Data Handling
Aerosol Collection Module (ACM)
Working principle
ACM collection section
Experiments
AIDA chamber
Instrumental set-ups and performances
Set-up of the PTR-ToF-MS and characterization of the working conditions
Set-up of the ACM and characterization of the working conditions
Experimental Conditions and Procedure
-pinene ozonolysis experiments
-pinene ozonolysis experiments
Nopinone experiment
Procedures of data analysis
Determination of the mixing ratios
Calibration
Fragmentation
-Pinene Fragmentation
-Pinene Fragmentation
Comparison of -pinene and -pinene fragmentation to literature
Nopinone fragmentation
Determination of the partitioning coefficient from a PTR-ToF-MS in a filter set-up
Determination of the partitioning coefficient from a PTR-ToF-MS coupled with the ACM
Results and discussion of - and -pinene ozonolysis experiments
-Pinene Ozonolysis
-Pinene Ozonolysis Products
-Pinene Ozonolysis
-Pinene Ozonolysis Products
Nopinone Partitioning
Other -Pinene Ozonolysis Products
ACM - SMPS comparison
Scientific findings of the - and -pinene ozonolysis experiments
Summary and Outlook
Detailed descriptions of the experiment processes
Pearson correlation matrix for -pinene fragmentation
Ion identities and Pearson correlation coefficient for ions correlated to C10H17+
Mixing ratio error
Fragments from ionization of C10H16 with O2+
Ions in the aerosol particle phase of a -pinene experiment at 243 K
References
List of Figures
List of Tables
Abbrevations
Danksagung