Semra Bakkaloglu¹, David Lowry², Rebecca Fisher², James Lawrence France², Mathias Lanoisellé³, Julianne Fernandez³, Katarina Vinkovic⁴, Huilin Chen⁵, Stewart Davies⁶, Euan G Nisbet² and Dave Lowry, Rebecca Fisher, James France, Mathias Lanoiselle, Julianna Fernandez, Katarina Vinkovic, Huilin Chen, Stewart Davies, Euan Nisbet, (1)Royal Holloway University of London, Egham, TW20, United Kingdom, (2)Royal Holloway, University of London, Egham, United Kingdom, (3)Royal Holloway University of London, Egham, United Kingdom, (4)University of Groningen, Center for Isotope Research, Groningen, Netherlands, (5)University of Groningen, Centre for Isotope Research, Groningen, Netherlands, (6)Viridor Viridor Waste Management Limited, Peninsula House, Rydon Lane, Exeter, Devon, United Kingdom