Ruth M. Sofield, PhD

Environmental Sciences Department, Huxley College of the Environment at WWU

Ruth Sofield Ruth M. Sofield, PhD
Office: 360-650-2181
Fax: 360-650-7284

Scientific Interests

I am most interested in research at the intersection of environmental chemistry and toxicology. My educational background has led me here with degrees and research experiences in biology, environmental science, toxicology, and environmental chemistry. My students and I use both laboratory and field work in our research; the laboratory studies let us answer specific questions in a controlled setting, while the field work is where the application of that work occurs. The majority of our work has focused on the impacts of aquatic chemistry on metal toxicity in aquatic environments. We have also done work on PAHs in groundwater and black liquor in pulp and paper mill effluent. Collaborations have included scientists from the government, private, and university sectors. I recently (Sept. 2011) returned from Eawag in Switzerland where I investigated the impacts of NOM on Ag Nanoparticle chemistry and algal toxicity.


As a teacher and a mentor, I try to make opportunities available to the students I work with. In some cases this is as simple as advising them of an AWMA club activity or a summer research program they can apply for and making sure I spend enough time understanding their strengths and goals before writing reference letters for them. In other cases, I help guide and support independent research for undergraduate students. The projects may be the student’s idea or they conduct research that supports my work or graduate students’ work. I try to connect students with professionals by encouraging presentations at conferences and the WWU poster fair, attendance at career panels, becoming members of professional organizations, and dinners with on-campus visitors. Most recently, I managed a large project working with The Port of Anacortes, the Department of Ecology, and GeoEngineers where undergraduate students designed and conducted research on a clean-up site in Anacortes, WA. The students worked closely with me, each other, and our collaborators to implement the research. To date, the final products include six Senior Project reports and five presentations at a National conference. My graduate students get the same encouragement and support for pursuing opportunities. In the end, I believe this is the way to discover where true interests lay, to find who colleagues are, and to advance in chosen professional fields.


  • PhD, 2003, Environmental Science and Engineering, Colorado School of Mines


  • MS, 1999, Environmental Science and Engineering, Colorado School of Mines


  • MS, 1995, Environmental Sciences, McNeese State University


  • BA, 1993, Biology, West Virginia University


Professional Path


  • Professor, Huxley College of the Environment, Western Washington University, 2015-present


  • Associate Professor, Huxley College of the Environment, Western Washington University, 2009-present


  • Visiting Researcher, Environmental Toxicology Department, Swiss Federal Institute of Aquatic Science and Technology (Eawag), 2010-2011


  • Assistant Professor, Huxley College of the Environment, Western Washington University, 2003-2009


  • Post-doctoral Researcher, Laboratory for Applied & Environmental Radiochemistry, Colorado School of Mines, 2002-2003


  • Field Biologist, Center for Coastal Environmental Health and Biomolecular Research, Marine Ecotoxicology Branch, National Ocean Service, NOAA, Charleston, SC, 1999-2002


Selected Publications (published earlier as Harper)


  • Diedrich, DJ, Sofield RM, Ranville JF, Hoff DJ, Wall VD, Brinkman SF. 2015. The Effects of Chronological Age and Size on Toxicity of Zinc to Juvenile Brown Trout. Archives of Environmental Contamination and Toxicology. 69(1):123-131.


  • Smith K, Ranville J, Lesher E, Diedrich D, McKnight D, Sofield R. 2014.Fractionation of Dissolved Organic Matter by Iron and Aluminum Oxides - Influence on Copper Toxicity to Ceriodaphnia dubia. Environmental Science and Technology.48:11934-11943.


  • Landis WG, Sofield RM, and Yu MH. 2010. Introduction to Environmental Toxicology: Impacts of Chemicals Upon Ecological Systems. 4th Edition.


  • Harper RM , Kantar C, and Honeyman BD. 2008. Binding of Pu (IV) to Galacturonic Acid and Extracellular Polymeric Substances (EPS) from Shewanella putrefaciens, Clostridium sp., and Pseudomonas fluorescens. Radiochimica acta. 96:753-762.


  • Martins N, Lopes I, Harper R, Ross P, and Ribeiro R. 2007. Differential Resistance to Copper and Mine Drainage in Daphnia longispina: Relationship with Allozyme Genotypes. Environmental Toxicology and Chemistry. 26(9):1904-1909.


More Here: Sofield CV and Sofield Selected Works.

Page Updated 04.10.2018