Portable XRF Technology to Quantify Pb in Bone In Vivo

Table 1

Detection limit for bone Pb measurement by portable XRF devices at different soft tissue thicknesses.

Soft tissue thickness (mm)	Detection limit XL3t GOLDD+ (ppm)	Detection limit XL3 (ppm)
0 mm	1.2	2.0
1 mm	1.8	3.5
2 mm	2.9	5.9
3 mm	4.6	9.6
4 mm	8.0	12.8
5 mm	11.0	14.7