Table 2. Referential table of intervention values (SIV) of each element for different soils according to clay percentage assuming organic matter is ≤2% (source: own elaboration).

SIV (mg/kg)		Element
		As	Cd	Hg	Pb	Ni	Zn	Cu	Cr
Percentage of clay	2	43.50	7.55	2.78	336.71	34.29	303.43	91.83	42.12
	5	46.65	7.90	2.92	355.41	42.86	349.71	101.33	46.80
	10	51.89	8.48	3.14	386.59	57.14	426.86	117.17	54.60
	15	57.13	9.06	3.37	417.76	71.43	504.00	133.00	62.40
	20	62.37	9.64	3.59	448.94	85.71	581.14	148.83	70.20
	25	67.61	10.22	3.82	480.12	100.00	658.29	164.67	78.00
	30	72.86	10.80	4.05	511.29	114.29	735.43	180.50	85.80
	35	78.10	11.38	4.27	542.47	128.57	812.57	196.33	93.60
	40	83.34	11.96	4.50	573.65	142.86	889.71	212.17	101.40
	45	88.58	12.54	4.72	604.82	157.14	966.86	228.00	109.20
	50	93.82	13.12	4.95	636.00	171.43	1044.00	243.83	117.00
	55	99.06	13.70	5.17	667.18	185.71	1121.14	259.67	124.80
	60	104.30	14.28	5.40	698.35	200.00	1198.29	275.50	132.60
	65	109.54	14.85	5.62	729.53	214.29	1275.43	291.33	140.40
	70	114.79	15.43	5.85	760.71	228.57	1352.57	307.17	148.20
	75	120.03	16.01	6.07	791.88	242.86	1429.71	323.00	156.00
	80	125.27	16.59	6.30	823.06	257.14	1506.86	338.83	163.80
	85	130.51	17.17	6.52	854.24	271.43	1584.00	354.67	171.60
	90	135.75	17.75	6.75	885.41	285.71	1661.14	370.50	179.40
	95	140.99	18.33	6.97	916.59	300.00	1738.29	386.33	187.20
	100	146.23	18.91	7.19	947.77	314.29	1815.44	402.16	195

Note:

Each row of this table presents the intervention values (SIV) of each element, depending on the percentage of clay in the soil and assuming a negligible amount of organic matter.