FATE OF MERCURY IN THE ARCTIC Michael Evan ... - COGCI

Fate of Mercury in the Arctic 9
Table of Contents
1. Introduction 10
1.1 The aim of this work 12
1.2 Summary of results 13
1.3 Sampling and Arctic fieldwork 17
2. Overview 18
2.1 General Mercury 18
2.2 Arctic Mercury 19
2.3 Mercury recorded in environmental archives 20
2.4 Overview of Arctic atmospheric chemistry “The polar sunrise mercury
depletion event” 22
3. Experimental Methods, Equipment and Procedures 27
3.2 Measurement of atmospheric elemental mercury and ozone 30
3.3 Ozone measurements 30
3.4 Gaseous elemental mercury measurements 30
3.5 RGM determination 33
3.6 Flux measurements of reactive gaseous mercury by relaxed eddy
accumulation 39
3.7 Peat analysis 57
3.8 Age dating of peat profiles 61
4. Results and Discussion 63
4.1 Ozone and GEM Measurements 69
4.2 RGM concentrations and Flux 71
4.3 High resolution dating of peat archives and mercury in peat 77
5. Conclusion and future work 117
Glossary, acronyms and abbreviations 119
Bibliography 121
Appendix A List of Papers 128
Appendix B Field Work: planning and post expedition report format132
Appendix C Supplementary material 142