Comparative Use of Soil Organic and Inorganic Amendments in Heavy Metals Stabilization

Table 3

Heavy metals content (in ppm) of soil samples and composted biosolids, and the maximum levels of total heavy metals established by Argentinean law (Hazardous wastes regime: soil quality guide).

	Heavy metals (mg kg DM^−1)
	Typical Hapludoll		Biosolid Compost		Law 24051^a
	Available	Total	Available	Total	Total
Cu	0.051	17.0	1.52	726.7	150–500
Zn	0.040	38.2	0.65	1183.3	600–1500
Cr	<0.001	14.9	13.2	230.0	750

^aLevels for soils with agricultural and industrial uses.