About the Authors

Holly E. Barden

holly.barden@postgrad.manchester.ac.uk

Affiliation School of Earth Atmospheric and Environmental Sciences and Williamson Research Centre for Molecular Environmental Science, University of Manchester, Manchester, United Kingdom

Roy A. Wogelius

Affiliation School of Earth Atmospheric and Environmental Sciences and Williamson Research Centre for Molecular Environmental Science, University of Manchester, Manchester, United Kingdom

Daqing Li

Affiliation Gansu Geological Museum, Lanzhou, People's Republic of China

Phillip L. Manning

Affiliations School of Earth Atmospheric and Environmental Sciences and Williamson Research Centre for Molecular Environmental Science, University of Manchester, Manchester, United Kingdom, Department of Earth and Environmental Sciences, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America

Nicholas P. Edwards

Affiliation School of Earth Atmospheric and Environmental Sciences and Williamson Research Centre for Molecular Environmental Science, University of Manchester, Manchester, United Kingdom

Bart E. van Dongen

Affiliation School of Earth Atmospheric and Environmental Sciences and Williamson Research Centre for Molecular Environmental Science, University of Manchester, Manchester, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: RAW HEB BEvD. Performed the experiments: HEB NPE. Analyzed the data: HEB RAW BEvD. Contributed reagents/materials/analysis tools: DL PLM. Wrote the paper: HEB RAW BEvD PLM.