1. Lyles School of Civil Engineering, Purdue University, 550 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
2. LTI Optics, LLC, Westminster, Colorado 80021, United States
3. Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 18 Shuang-qing Road, Beijing 100085, China
4. Division of Environmental & Ecological Engineering, Purdue University, West Lafayette, Indiana 47907, United States