Figure 2

MA XRF elemental scans of Zn (b), K (c), Cl (d) and Ca (e) of female underwear (a) containing a semen and urine stain applied under controlled conditions (pixel scan time = 35 ms).
MA XRF elemental scans of Zn (b), K (c), Cl (d) and Ca (e) of female underwear (a) containing a semen and urine stain applied under controlled conditions (pixel scan time = 35 ms).