In Situ Generated Colloid Transport of Cu and Zn in Reclaimed Mine Soil Profiles Associated with Biosolids Application

Table 2

Extractions of Cu and Zn in mg kg⁻¹ by HCl/HNO₃ in soils, spoil, and biosolids.

	VN^α	VR	VS	KN	KR	KS	Biosolids
	mg kg^−1
Cu	1.7 (0.2)	4.3 (0.3)	11.3 (1.2)	4.9 (2.7)	2.4 (0.1)	23.0 (0.4)	21.4 (1.0)
Zn	14.7 (2.5)	23.6 (1.1)	16.5 (3.1)	19.1 (4.6)	17.8 (1.4)	49.8 (13.3)	60.8 (0.6)

𝛼: VN: Virginia Natural, VR: Virginia Reclaimed, VS: Virginia Spoil, KN: Kentucky Natural, KR: Kentucky Reclaimed, KS: Kentucky Spoil.
*represents average value with standard deviation in parenthesis.