XRD - sampling between 2 Theta of 20 - 90 with Cu K alpha xrays. 
HPLC - degradation experiments used 1 mL samples taken every 15 or 30 minutes. Analysis was performed on a Thermo Scientific Ultimate 3000 liquid chromatograph with a UV detector. CBZ analysis used a Thermo Scientific Acclaim 120 C18 column (3.0 X 75.0 mm, particle size 3.0 µm) and a Thermo Scientific Acclaim 120 C18 guard column (R) 120 C18 (3.0 X 10.0 mm, particle size 5.0 µm) The mobile phase was made up using 5.0 mM phosphoric acid and acetonitrile 70:30 (v:v) with a flow rate of 0.8 mL min-1, injection volume of 20 µL and detection wavelength of 285 nm. 
ICPMS - All samples, standards and blanks, were spiked with internal standard elements Be, In, and Re. The Zn concentration was calibrated using six synthetic standards prepared from a 1000 ppm Inorganic Ventures (VA, USA) standard. 
MicroCT - Data collected using a Nikon XT H 225 ST using a 178 kV x-ray source and 0.708 second exposure time, 3141 projections and 4 frames per projection and analysed using Thermo Scientific Avizo Software 9 3D data visualisation software.