Table 7.

Values of trueness [%] obtained using TXRF for the reference material IAEA-A-13 together with the lowest and highest values of the parameter met in examined literature.

Element	Recommended value [μg/g]	95% Confidence Interval [μg/g]	Measured value [μg/g]	TXRF	F-AAS	GF-AAS	ICP-OES	ICP-MS
P	940#	690–1120	653	69	n.f.	99.7139*a	9013–99.884*	104119
S	6500	6000–7000	6219	95	96.1–109.4a141	n.f.	99 ± 14a148, 91 ± 2a148	100119
K	2500	2100–2700	2877	115	94–101a144	88 ± 7–104 ± 8a145	7213–10484*	98119–98.738*
Ca	286	226–332	469	164	102.434	n.f.	9471*–10569	6496*–10539*
Fe	2400	2200–2500	3048	127	97.834	9745*–106105*	91.5 ± 1.882–11347	71101*–111101*
Cu	4.3	3.7–4.8	5.6	130	104.134	96.460*–103.8110*	9047–10886*	81100*–125101*
Zn	13	12–14	18	140	95.1110*–95.9110*	9745*	8779–11371*	111 ± 3095
Se	0.24	0.15–0.31	0.22	92	97.8 ± 5.2a,b146, 102.2 ± 5.3a,b147	89.4–98.8a147	9183–1093*	62100*–125101*

^#Information value;

*Calculated based on the literature data;

^aValue from the paper that does not concern the analysis biomedical samples;

^bDetermined using HG-AAS;

n.f. Value not found in discussed papers or not expressed in consistent unit.