Table 2.

Results of soil standard-2709a using EDXRF (in mg kg⁻¹).

Element	Certified values	EDXRF values	%error
Mg	14600.0	14900.0	+2.05
Al	72100.0	68400.0	−5.13
K	20500.0	19100.0	−6.83
Ca	19100.0	16500.0	−13.6
Ti	3400.0	3100.0	−8.82
Fe	33600.0	33900.0	+0.89
V	110.0	98.8	−10.18
Cr	130.0	112.1	−13.77
Mn	529.0	568.2	7.41
Co	12.8	12.8	0
Ni	83.0	69.3	−16.5
Zn	107.0	127.9	19.53