Mineral Phases and Release Behaviors of As in the Process of Sintering Residues Containing As at High Temperature

Table 2

Concentrations and HVEP results of heavy metals in residues.

Heavy metals	Content of trace elements (mg/kg)	HVEP leaching results of heavy metals (mg/L)	Identification Standard for hazardous wastes [9] (mg/L)	Environmental Quality Standards for surface water IV [10] (mg/L)
Cu	128.85	n.d.	100	1.0
Zn	1279.24	n.d.	100	2.0
Cd	n.d.	n.d.	1	0.005
Pb	212.56	n.d.	5	0.05
Cr	n.d.	n.d.	15	0.05
Be	n.d.	n.d.	0.02	—
Ba	1046.80	0.84	100	—
Ni	n.d.	n.d.	5	—
Ag	n.d.	n.d.	5	—
As	5552.40	8.35	5	0.1
Se	n.d.	n.d.	1	0.1