Figure 5
FF-XRF and µ-XRF images of an ancient Korean coin. (a) Optical microscopic image of the ancient coin, scale bar = 500 µm. Cu and Zn in the coin as assessed by (b) FF-XRF and (c) µ-XRF, scale bars = 100 µm. (d) and (e) XRF spectra of (b) and (c), respectively. |