1. Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
2. Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Beijing 100085, People’s Republic of China
3. Department of Crop Sciences, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
4. National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, United States
5. Department of Soil and Crop Sciences, Colorado State University, Fort Collins, Colorado 80523, United States