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The effect of elevated atmospheric carbon dioxide mixing ratios on the emission of Volatile organic compounds from Corymbia citriodora and Tristaniopsis laurina

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posted on 29.03.2022, 02:40 by Michelle Camenzuli
Biogenic Volatile Organic Compounds (BVOCs) emitted by plants can affect the climate and play important roles in the chemistry of the troposphere. As ambient atmospheric carbon dioxide (CO₂) levels are rapidly increasing knowledge of the effect of elevated atmospheric CO₂ on plant BVOC emissions is necessary for the development of global climate models. -- During this study, the effect of elevated atmospheric CO2 mixing ratios on BVOC emissions from Corymbia citriodora (Lemon Scented Gum) and Tristaniopsis laurina (Water Gum) was determined for the first time through the combination of Solid-Phase Microextraction (SPME), Gas Chromatography-Flame Ionisation Detection (GC-FID), Gas Chromatography-Mass Spectrometry (GC-MS) and an environment chamber. For C. citriodora elevated atmospheric CO₂ led to a decrease in the emission rate of α-pinene, β-pinene, eucalyptol, citronellal and β-caryophyllene, however, elevated CO₂ had no effect on the emission rate of citronellol. The emission profile of T. laurina has been determined for the first time. For T. laurina elevated CO₂ led to a decrease in the emission rate of α-pinene but the emission rates of β-pinene, limonene, eucalyptol and citronellol were unaffected. The results obtained in this work confirm that the effect of elevated atmospheric CO₂ on plant BVOC emissions is species-specific.

History

Table of Contents

Introduction -- Environmental factors affecting the emission of biogenic Volatile organic compounds -- Materials and experimental procedures -- Quantification using sold-phase microextraction in a dynamic system: technique development -- The emission profile of Tristaniopsis laurina -- Study of the effect of elevated atmospheric CO₂ levels on the emission of BVOCS from Australian native plants -- Conclusions and future work.

Notes

Bibliography: p. 120-124

Awarding Institution

Macquarie University

Degree Type

Thesis masters research

Degree

Thesis (MSc) , Macquarie University, Division of Environmental and Life Sciences, Dept. of Chemistry and Biomolecular Sciences

Department, Centre or School

Dept. of Chemistry and Biomolecular Sciences

Year of Award

2008

Principal Supervisor

Ian M. Jamie

Additional Supervisor 1

T. H. Roberts

Rights

Copyright disclaimer: http://www.copyright.mq.edu.au Copyright Michelle Camenzuli 2008. Complete version suppressed for copyright reasons. However, on receipt of a Document Supply Request, placed with Macquarie University Library by another library, we will consider supplying a copy of this thesis. For more information on Macquarie University's Document Supply, please contact ill@library.mq.edu.au

Language

English

Extent

124 leaves ill. (some col.)

Former Identifiers

mq:6341 http://hdl.handle.net/1959.14/45386 1348829