Additional file 1 of Close up to the surface: reflections on a preliminary forensic study of four Chinese bronze mirrors

Additional file 1: Table S1. Elemental abundances for both the reflective and knob side surfaces of the 4 mirrors as provided by X-ray fluorescence measurements. Note the trace mercury found on mirrors 3 and 4 and the Chromium found on mirrors 1 and 2 from ancient and modern treatments respectively.