中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 23 No. 1 January 2013 |
（1. Institute of Environmental Science and Engineering, School of Metallurgical Science and Engineering,
Central South University, Changsha 410083, China;
2. Chinese National Engineering Rese）
Abstract:Four different methods, namely mineralogical analysis, three-stage BCR sequential extraction procedure, dynamic leaching test and Hakanson Potential Ecological Risk Index Method were used to access the environmental activity and potential ecological risks of heavy metals in zinc leaching residue. The results demonstrate that the environmental activity of heavy metals declines in the following order: Cd>Zn>Cu>As>Pb. Potential ecological risk indices for single heavy metal are Cd>Zn>Cu>As>Pb. Cd has serious potential ecological risk to the ecological environment and contributes most to the potential toxicity response indices for various heavy metals in the residue.
Key words: heavy metals; BCR sequential extraction; environmental availability; leaching toxicity; dynamic leaching; potential ecological risk index method; zinc leaching residue
