Trade.Information

Details of Christopher Amrhein

Professor of Soil Chemistry

Office: 214 Science Laboratories I
Phone: (951) 827-5196
Email: christopher.amrhein@ucr.edu

Academic Degrees:

• Ph.D. in Soil Chemistry, 1984, Utah State University
• M.S. in Water Science, 1980, University of California, Davis
• B.S. with High Honors in Soil and Water Science, 1977, University of California, Davis

Specialization:

• Management, treatment, and reuse of agricultural wastewater.
• Trace element chemistry in soils, sediments, water, and brines.
• Oxidation/reduction chemistry in wetlands and metal surfaces.
• Dissolution and precipitation kinetics of carbonate and silicate minerals.
• Cation and anion adsorption reactions on phyllosilicate clays, metal oxides, and soils.
• Reclamation of salt-affected soils and the maintenance of soil structure.

Courses Taught:

• ENSC 100: Introduction to Soil Science (undergraduate class with 4 laboratory periods and 1 ‘Honors' lab)
• ENSC 2: Introduction to Environmental Sciences: Environmental Quality (undergraduate class, 4 units)
• SWSC 206: Arid Zone Soils (4 graduate units); alternate years; to be restructured as "Hypersaline Ecosystems"
• NASC 92: Freshman Advising Seminar in Environmental Sciences (1 unit)

Selected Publications:

Zhang, Y., C. Amrhein, and W.T. Frankenberger, Jr. 2005. Effect of arsenate and molybdate on removal of selenate from an aqueous solution by zerovalent iron. Sci. Total Environ. 350: 1-11.

Mason, L.B., C. Amrhein, C.C. Goodson, M.R. Matsumoto, and M.A. Anderson. 2005. Reducing sediment and phosphorus in tributary waters with alum and polyacrylamide. J. Environ. Qual. 34:1998-2004.

Grieve, C.M., J.A. Poss, C. Amrhein. 2006. Response of Matthiola incana to irrigation with saline wastewaters. Hort. Sci. Vol. 41: 119-123.

Yu, X., C. Amrhein, M.A. Deshusses, and M.R. Matsumoto. 2006. Perchlorate reduction by autotrophic bacteria in the presence of zero-valent iron. Environ. Sci. Tech. 40: 1328-1334.

Berkowitz, J., M.A. Anderson, and C. Amrhein. 2006. Influence of aging on phosphorus sorption to alum floc in lake water. Water Research. 40: 911-916.

Goodson, C.C., G. Schwartz, and C. Amrhein. 2006. Controlling tailwater sediment and phosphorus concentrations with PAM in the Imperial Valley, CA. J. Environ. Qual. 35, 1072-1077.

Yu, X., C. Amrhein, Y. Zhang, M.R. Matsumoto. 2006. Factors influencing arsenite removal by zero-valent iron. J. Environ. Engin. 132: 1459-1469.

Yu, X., C. Amrhein, M.A. Deshusses, and M.R. Matsumoto. 2007. Perchlorate reduction by autotrophic bacteria attached to zero-valent iron in a flow-through reactor. Environ. Sci. Tech. 41:990-997.

de Koff, J., M.A. Anderson, C. Amrhein. 2007. Geochemistry of iron in the Salton Sea, California. Hydrobiologia (in press).

Geraci, J.B., C. Amrhein, and C.C. Goodson. 2007. Barnacle growth rate on artificial substrate in the Salton Sea, California. Hydrobiologia (in press).

Rodriguez, I.R., C. Amrhein, and M.A. Anderson. 2007. Laboratory studies on the coprecipitation of phosphate with calcium carbonate in the Salton Sea, California. Hydrobiologia (in press).

Rodriguez, I.R., C. Amrhein, M.A. Anderson. 2007. Reducing dissolved phosphorus loading to the Salton Sea with aluminum sulfate. Hydrobiolgia (in press).

Recent Grants and Contracts:

• Changes in the Physical and Chemical Properties of Soils as a Result of Ozonation
  • Funding Agency: California Energy Commission
  • Dates: 1/00 - 6/02
  • Total amount of support: $57,432
  • Principal Investigator: Christopher Amrhein
  • Co-Investigators: M. Anderson and M. Matsumoto
• Nutrient Cycling in the Salton Sea
  • Funding Agency: Salton Sea Authority/USGS
  • Dates: 2/00 - 7/01
  • Total amount of support: $294,805
  • Principal Investigators: M. Anderson and C. Amrhein
• Methods of Removing Phosphate from the Rivers Flowing into the Salton Sea
  • Funding Agency: Salton Sea Authority, Prop. 13
  • Dates: 3/02-3/03
  • Total amount of support: $57,869
  • Principal Investigator: Christopher Amrhein
  • Co-PI's: Michael Anderson and Mark Matsumoto

Address:

Department of Environmental Sciences
University of California, Riverside
Riverside, CA 92521

Fax: (951) 827-3993