Calibration Method for Confocal X-Ray Microanalysis with Polychromatic Excitation

Table 1

Sensitivity parameters and validation of the calibration.

	Sensitivity parameters		Quantification of NIST1577b; Bovine liver
	*; ×10^−36	μm	Certified; ppm	Point 1; ppm	Point 2; ppm	Point 3; ppm	Average; ppm
K	2.46	39	9940	9100	8900	8700	9100 ± 200
Mn	13.6	34	10.5	—	—	—	—
Fe	14.8	33	184	133	165	170	156 ± 20
Cu	15.2	29	160	125	140	156	140 ± 16
Zn	16.3	27	127	97	110	123	110 ± 13

The first two columns show the sensitivity parameters for the calibrated elements. The last four columns show the quantification of the reference standard NIST1577b by the confocal setup applying the proposed calibration approach on three different points of the prepared standard.