1. Department
of Crop and Soil Science, Soils Division, Oregon State University, Corvallis, Oregon 97331, United
States
2. College of Earth,
Ocean and
Atmospheric Sciences, Oregon State University, Corvallis, Oregon 97331, United States
3. Department
of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
4. COGER, King Saud University, Riyadh 11451, Saudi Arabia