1. School of Water and Environment, Chang’an University, Xi’an, China ;
2. Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of the Ministry of Education, Chang’an University, Xi’an, Shaanxi, China
3. Environmental and Industrial Hygiene Services, Chemtex, Port Arthur, Texas, USA
4. Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, China
5. Yibin Research Institute, Southwest Jiaotong University, Yibin, China