Table 1.

The validation parameters of the analytical method of heavy metals.

Elements	Detection Limit (μg/L)	R2	Reference Value (mg/kg)	Detected Value a (mg/kg)	Relative Error (%)	RSD (%)
As	0.001	0.9995	0.0280 ± 0.0060	0.0320	−17.9	3.12
Cd	0.001	0.9996	0.0041 ± 0.0016	0.0050	−25.0	3.92
Cr	0.03	0.9998	0.1100 ± 0.0000	0.1070	−8.2	5.43
Hg	0.002	0.9991	0.0016 ± 0.0000	0.0016	0.0	6.25
Pb	0.01	0.9997	0.0700 ± 0.0200	0.0740	−10.0	4.17

Key: ^a mean value from triplicate determinations.