Table 8.

Pb detection limit (DL) values for bare bone and ST phantom calibration line data.

ST	Thickness t (mm)	Pb Lα		Pb Lβ
		σ0 (counts keV)	DL (μg g−1)	σ0 (counts keV)	DL (μg g−1)
	0.00	0.068	2.76(8)	0.179	7.3(5)
POM	1.10(5)	0.105	9.0(7)	0.281	20(2)
	1.89(5)	0.123	24(5)	0.297	39(3)
	3.23(3)	0.090	35(6)	0.187	35(3)
	4.36(3)	0.079	40(18)	0.138	35(3)
Resin	1.10(5)	0.088	5.5(3)	0.281	16.2(1.5)
	2.18(5)	0.174	15(2)	0.265	26(2)
	3.05(3)	0.114	27(5)	0.250	38(8)
	4.19(3)	0.092	45(17)	0.161	54(14)
Wax	1.47(8)	0.108	7.0(9)	0.302	19.6(9)
	2.04(8)	0.123	10.4(5)	0.286	34(9)
	3.48(8)	0.149	17(2)	0.328	30(3)
	4.01(5)	0.107	15(2)	0.262	35(6)