Erik Christensen - UWM Distinguished Professor



Contact Information

Office Address:
EMS 562, E308
3200 North Cramer Street
Milwaukee, WI 53211
Phone: 414-229-4968
Fax: 414-229-6958
Email: erc@uwm.edu

Mailing Address:
P.O. Box 784
Department of Civil Engineering and Mechanics
University of Wisconsin-Milwaukee
Milwaukee, WI 53201

Eric Christensen
Education

Ph.D. - Environmental Engineering, University of California, Irvine, 1977
M.S. - Electrical Engineering, Technical University of Denmark, 1967

Research Interests

Source apportionment and degradation of environmental pollutants, storm water, multiple toxicity models, radiometric dating of sediments, aquatic pollutants, membrane separation processes.

Selected Publications
  • Soonthornnonda P., Y. Zou, E. R. Christensen, and A.  Li.  2011. PCBs in Great Lakes Sediments, determined by positive matrix factorization.   J. Great Lakes Res. 37, 54-63.
  • Liu, Y., P. Soonthornnonda, J. Li, and E.R. Christensen.  2011. Stormwater pollution characterized by GIS determined source areas and runoff volumes. Environ. Manage. 47 (2), 201-217.
  • Wei, H., R. Yang, A. Li, E.R. Christensen, and K. J. Rockne.  2010. Gas chromatographic retention of 180 polybrominated diphenyl ethers and prediction of relative retention under various operational conditions. Journal of Chromatography A. Vol. 1217, 2964-2972.
  • Henry, R.C. and E.R. Christensen. 2010.  Selecting an appropriate multivariate source apportionment model result. Environ. Sci. Technol. 44 (7), 2474-2481.
  • Christensen, E.R., K.O. Kusk, and N. Nyholm.  2009.  Dose response regressions for algal growth and similar continuous endpoints: Calculation of effective concentrations. Environ. Toxicol. Chem. 28 (4), 826-835.
  • Soonthornnonda, P., E.R. Christensen, Y. Liu, and J. Li. 2008. A washoff model for stormwater pollutants.  Sci. Tot. Environ.  402, 248-256.
  • Soonthornnonda, P. and E.R. Christensen.  2008. Source apportionment of pollutants and flows of combined sewer wastewater.  Water Res. 42 (8-9), 1989-1998.
  • Soonthornnonda, P. and E.R. Christensen.  2008.  A load model based on antecedent dry periods for pollutants in stormwater.  Wat. Environ. Res.  80 (2), 162-171.
  • Dilmaghani, S., I.C. Henry, P. Soonthornnonda, E.R. Christensen, and R.C. Henry. 2007. Harmonic analysis of environmental time series with missing data or irregular sample spacing.  Environ. Sci. Technol. 41 (20), 7030-7038.
  • Christensen, E.R. and S. Arora, 2007. Source apportionment of PAHs in sediments using factor analysis by time records: Application to Lake Michigan, U.S.A. Water Res. 41 (1), 168-176.
  • Lu, J.H., P.A. Bzdusek, E.R. Christensen, and S. Arora, 2005. Estimating sources of PAHs in sediments of the Sheboygan River, Wisconsin, by a chemical mass balance model. J. Great Lakes Res. 31 (4), 456-465.
  • Bzdusek, P.A., E.R. Christensen, C.M. Lee, U. Pakdeesusuk, and D.L. Freedman, 2006. PCB congeners and dechlorination in sediments of Lake Hartwell, South Carolina, determined from cores collected in 1987 and 1998. Environ. Sci. Technol. 40 (1), 109-119.
  • Bzdusek, P.A., J. Lu, and E.R. Christensen, 2006.  PCB congeners and dechlorination in sediments of Sheboygan River, Wisconsin, determined by matrix factorization.  Environ. Sci. Technol. 40 (1), 120-129.
  • Merino-Garcia, D., K.O. Kusk, and E.R. Christensen, 2003. Joint toxicity of similarly and dissimilarly acting chemicals to Daphnia magna at different response levels. Arch. Environ. Contam. Toxicol. 45 (3), 289-296.
  • Li, J., M.K. Mgonella, P.A. Bzdusek, and E.R. Christensen, 2005. PCB congeners and dechlorination in sediments of Upper Sheboygan River, Wisconsin. J. Great Lakes Res. 31 (2), 174-186.
  • Bzdusek, P.A., J. Lu, and E.R. Christensen, 2005. Evidence of fine-grained sediment transport and deposition in Sheboygan River, Wisconsin, based on sediment core chemical tracer profiles. Wat. Resour. Res.  41 (4), W04016, doi:10.1029/2004WR003483.
  • Chen, C.Y., S.L. Chen, and E.R. Christensen, 2005. Individual and combined toxicity of nitriles and aldehydes to Raphidocelis subcapitata. Environ. Toxicol. Chem. 24 (5), 1067 – 1073.
  • Christensen, E.R. and P.A. Bzdusek, 2005. PAHs in sediments of the Black River and the Ashtabula River, Ohio: Source apportionment by factor analysis. Wat. Res. 39 (4), 511-524.
  • Imamoglu, I., K. Li, E.R. Christensen, and J.K. McMullin, 2004. Sources and dechlorination of polychlorinated biphenyl congeners in the sediments of Fox River, Wisconsin. Environ. Sci. Technol. 38 (9), 2574 – 2583.
  • Bzdusek, P.A., E.R. Christensen, A. Li, and Q.M. Zou, 2004. Source apportionment of sediment PAHs in Lake Calumet, Chicago: Application of factor analysis with nonnegative constraints. Environ. Sci. Technol. 38 (1), 97–103.