David T. Long
Aqueous and Environmental Geochemistry
TREHB Project
Dept. of Geological Sciences
College of Natural Science
Michigan State University
East Lansing, Michigan 48824 U.S.A..
my office:141 Natural Science Building
dept. office: 206 Nat. Sci.
my phone: 1.517.353.9618
dept. phone: 1.517.355.4626
fax: 1.517.353.8787
email: long@msu.edu
web: http://www.msu.edu/~long

Courses Taught:

The Dynamic Earth
Earth System Science
Environmental Geochemistry
Aqueous Geochemistry
Physical, Chemical, and Biological Process of  the Environment: A Systems Perspective


I do research and teaching in the areas of Aqueous and Environmental Geochemistry.  I have been: 
studying the biogeochemical cycles and interactions of elements (including trace and heavy metals) and dissolved organic compounds in surface environments (e.g., wetlands, rivers, lakes, groundwater); 
working to understand both the natural and human induced changes in water chemistry as it moves through the water cycle using stable isotopes, multivariate statistics, and geochemical modeling
quantifying the influences of human activities on environmental systems using sediment chronologies; and 
relating knowledge learned from the above studies to evaluate the influences of the environment on human health through exposure analysis.


Monmouth College, Illinois: B.A. in Geology/Chemistry
University of Illinois: M.S. in Hydrogeochemistry
University of Kansas: Ph.D. in Aqueous Geochemistry

MSU Appointments:

Civil and Environmental Engineering
Institute for International Health
Center for Environmental Toxicology
Center for Water Research
Center for Russian and East European Studies
Global Institute for Higher Education.  

International Research and Teaching Collaborations:

Australia, Bulgaria, China, Croatia, Israel, Kenya, Macedonia, Malawi, Peru, Senegal, Serbia, and Romania.   

Example  Publications:

Loss of seasonal variability in a lake: the consequences of copper sulfate algaecide. Song, L., Marsh, T., Voice, T.C., and Long, D.T. (in press)  Physics and Chemistry of the Earth.

Field deployable method for determination of arsenic species in water. Voice, T.C., Flores Del Pino, L.V., Havezov, I., and Long, D.T. (in press)  Physics and Chemistry of the Earth.

Metal Transformation in Soils.  Marsh, T.L., Long, D.T., Voice, T.C. (in press) in Section D Soil Biology and Biochemistry of the 2nd Edition of Handbook of Soil Science. E. Paul and P Nannipieri editors. CRC Press/Taylor and Francis Group,

Rapid adaptation of Ralstonia pickettii to an environment contaminated with high levels of copper. Yang, F., Pecina, D., Kelly, S., Kim, Sang-Hoon, Kemner, K., Long, D.T., Marsh, T. (in press)   Environmental Technology.

Simultaneous quantification of dissolved organic matter fractions and copper complexes using solid phase extraction.  McElmurry, S.P., Voice, T.C., Long,  D.T. (in press)  Applied Geochemistry

Assessing the response of watersheds to catastrophic (logging) and secular (global temperature change) perturbations using sediment-chemical chronologies. Long, D.T., Parsons, M.J., Yansa, C.H., Yohn, S.S., McLean, C.E., Vannier, R.G., (2010)   Applied Geochemistry 25. 143-158.

Geochemistry of four tropical montane watersheds, Central Panama.  Harmon, R.S., Lyons, W.B., Long, D.T., Mitasova, H., Ogden, F.L., Gardner, C.B., Welch, K.A.,and Witherow, R.A. (2009) Applied Geochemistry 24: 624-640.

Lake-specific responses in sedimentary sulfur after copper sulfate additions to Michigan lakes. Drevnick, P.E., Otter, R.R., Gorski, P.R., Long, D.T., Canfield, D.E., and Oris, J.T. (2009)  Lakes and Reservoirs: Research and Management 14:193-201.

Influence of hydrogeology, microbiology, and landscape history on the geochemistry of acid hypersaline waters, Southern Australia. Long, D.T., Lyons, W.B., and Hines, M.E. (2008) Applied Geochemistry. 24: 285-296.

Role of exposure analysis in solving the mystery of Balkan endemic nephropathy.  Long, D.T. and Voice, T.C. (2007)  Croatian Journal of Medicine 48:300-311.







Updated: May 2010.