Wenhui Qiu, Southern University of Science and Technology, Shenzhen, China, School of Environmental Science and Engineering and Shenzhen Key Laboratory of Soil and Groundwater Pollution Control, Shenzhen, China, Ting Zhao, Southern University of Science and Technology,, Shenzhen, China and Chunmiao Zheng, Southern University of Science and Technology, School of Environmental Science and Engineering, Shenzhen, China