1. Department
of Crop Sciences, University of Illinois at Urbana−Champaign, Urbana, Illinois 61801, United States
2. Water
and Soil Quality Research Group, Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona, Barcelona 08034, Spain
3. Department
of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
4. National
Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle
Park, North Carolina 27709, United States
5. Catalan Institute
for Water Research (ICRA), Parc Científic i Tecnològic
de la Universitat de Girona, 17003 Girona, Girona, Spain
6. Department
of Chemistry, Central China Normal University, Wuhan, Hubei 430079, P.R. China