Extraction and Chromatography of targeted emission markers in atmospheric aerosols
Summary, in English
followed by mass spectrometry detection for the extraction, islation and
quantitative anlaysis of targeted emission markers from complex aerosol samples.
Development and optimization of various extraction and microextraction methods, optimization of different chromatography methods and mass spectrometry detection was motivated by the goals of higher selectivity, sensitivity, precision, accuracy, low limits of detection and low limits of quantification. Selection of greener solvents, reduced solvent use, shorter run times and eventually cheaper solutions were emphasised. The developed methods were compared with already existing methods in terms of 1) lower limits of detection, 2) reduced bias in analytical measurements and 3) greener alternatives. An interesting discovery on the formation of iron(III) complexes of 3-methyl-1,2,3-butane tricarboxylic acid, one of the emission markers for secondary biogenic emissions from monoterpenes,
was also presented for the first time. The potential of the methods was
demonstrated by their applications to aerosol samples as well as to solve societal
problems like early detection of smouldering fire using a unique emission marker.
Finally, detailed description of hollow-fibre liquid-phase microextraction method
studied for the extraction of 3-methyl-1,2,3-butane tricarboxylic acid was
presented along with the drawbacks of the method observed for the compound. It is expected that the research presented here will be a positive contribution in the estimation of emission markers and similar compounds from complex samples.
Lund University (Media-Tryck)
- Analytical Chemistry
- atmospheric aerosols
- emission markers
- mass spectrometry
- supercritical CO2
- trace analysis
- ISBN: 978-91-7422-617-1
- ISBN: 978-91-7422-616-4
14 December 2018
Lecture Hall B, Kemicentrum, Naturvetarvägen 14, Lund