F I	F II	F III	F IV	F V	suma		F I%	F II%	F III%	F IV%	F V%
CMA	0.001	0.001	0.010	0.003	0.078	0.093		1.08	1.08	10.75	3.23	83.87
CMB	ND	0.001	ND	0.003	0.089	0.093		ND	1.08	ND	3.23	95.70
CMC	0.001	0.001	ND	0.001	0.006	0.009		11.11	11.11	ND	11.11	66.67
FLA	ND	ND	0.010	ND	0.030	0.040		ND	ND	25.00	ND	75.00
FLB	ND	ND	0.010	0.002	0.025	0.037		ND	ND	27.03	5.41	67.57
FLC	ND	ND	0.010	0.001	0.009	0.020		ND	ND	50.00	5.00	45.00
LVA	0.001	0.001	ND	0.004	0.014	0.019		5.26	5.26	ND	21.05	73.68
LVB	ND	0.001	ND	0.001	0.010	0.011		ND	9.09	ND	9.09	90.91
LVC	ND	ND	ND	ND	0.015	0.015		ND	ND	ND	ND	100.00

Tabla 5: Concentraciones de cromo (mg/g de suelo) y porcentajes de distribución en las distintas fracciones de suelo natural. ND = menor del límite de detección.