Speciation, Fate and Transport, and Ecological Risks of Cu, Pb, and Zn in Tailings from Huogeqi Copper Mine, Inner Mongolia, China

Table 1

Physicochemical properties and producing-AMD features of tailings.

Sample	Cu; (mg/kg)	Pb; (mg/kg)	Zn; (mg/kg)	S (%)	AP	NP	APR	NAPP
S1	2141	439.1	3939	3.89%	1.22	12.57	10.30	−11.35
S2	3561	528.5	4527	6.21%	1.94	8.07	4.16	−6.13
S3	2945	487.2	4103	5.54%	1.73	9.24	5.34	−7.51

Note. AMD refers to acid mine drainage; AP and NP mean acid potential and neutralization potential, respectively; NAPP represents AP-NP; APR refers to NP/AP.