Table 2.

Selective validation parameters of the applied method.

Parameter	Cd	Pb	Hg	Ni
Reference value (mg/kg)	0.30 ± 0.02	0.50 ± 0.04	0.20 ± 0.01	0.50 ± 0.03
Determined value (mg/kg)	0.27	0.53	0.16	0.52
	0.31	0.48	0.18	0.51
	0.33	0.46	0.16	0.57
	0.29	0.52	0.21	0.49
	0.27	0.52	0.23	0.55
	0.28	0.54	0.17	0.5
Average	0.29	0.51	0.19	0.54
SD	0.02	0.03	0.03	0.03
RSD (%)	8.28	6.08	13.68	5.58
Recovery (%)	96.67	102.0	95.0	106.0
LOD * (µg/kg)	0.8	4.5	1.8	1.2
LOQ ** (µg/kg)	2.1	14.8	6.0	4.0

* LOD—Limit of Detection; ** LOQ—Limit of Quantification.