01whole.pdf (3.91 MB)
Download file

Comparative analysis of reactive mercury measurement methodology and environmental correlates in Australia

Download (3.91 MB)
thesis
posted on 29.03.2022, 01:31 by Kellie Cook
Accurate quantification of atmospheric mercury (Hg) is critical for understanding the Hg biogeochemical cycle and for the development of effective policy and management. However, measurement uncertainties as well as oxidation chemistry and other environmental influences make accurate quantification difficult. A method comparison between the Tekran speciation system (2537/1130/1135) and the University of Nevada Reno Reactive Mercury Active System (UNRRMAS) is provided for the first time within the Sydney urban environment, which ran for a total of 9 months. It was found that GOM collected by the Tekran speciation system and RM by the CEMs within the UNRRMAS collected mean concentrations of 18.21 ± 10.56 pg m-3 and 14.57 ± 5.45 pg m-3, respectively. These methods were found to be comparable during the study. An investigation into a number of environmental parameters at the MQ AWS site found there to be no observed relationship with O3 chemistry or other environmental parameters under linear regression analysis, suggesting that they exert little influence on RM concentrations. However, it is suggested that synoptic and mesoscale circulation patterns may play a key role in the concentration and dispersal of RM at the site, which is thought to be due to the unique topographical and climatological characteristics of the Sydney Basin.

History

Table of Contents

Chapter 1. Introduction -- Chapter 2. Literature review -- Chapter 3. Research methodology -- Chapter 4. RM method comparison -- Chapter 5. Tekran measurement uncertainties -- Chapter 6. Environmental influences -- Chapter 7. Conclusions -- Appendices.

Notes

Bibliography: pages 52-57 Empirical thesis.

Awarding Institution

Macquarie University

Degree Type

Thesis MRes

Degree

MRes, Macquarie University, Faculty of Science and Engineering, Department of Environmental Sciences

Department, Centre or School

Department of Environmental Sciences

Year of Award

2017

Principal Supervisor

Grant Edwards

Rights

Copyright Kellie Cook 2017. Copyright disclaimer: http://mq.edu.au/library/copyright

Language

English

Jurisdiction

New South Wales

Extent

1 online resource (vi, 64 pages) colour illustrations

Former Identifiers

mq:71218 http://hdl.handle.net/1959.14/1272056