Research

Environmental and analytical geochemistry.

Selected Publications

- Clemente, J., M. J. Simpson and A. J. Simpson.  Association of Specific Organic Matter Compounds in Size Fractions of Soils Under Different Environmental Controls. Organic Geochemistry (accepted).

- Yuk, J., M. J. Simpson, and A. J. Simpson. 2011. 1D and 2D NMR metabolomics of Earthworm responses to sub-lethal trifluralin and endosulfan exposure.  Environmental Chemistry (accepted).

- Woods G. C M. J. Simpson, B. G. Pautler, S. F. Lamoureux, M. J. Lafrenière and A. J. Simpson. 2011. Evidence for the enhanced lability of dissolved organic matter following permafrost slope disturbance in the Canadian High Arctic. Geochimica et Cosmochimica Acta (accepted).

- McKelvie, J.R, D. Wolfe, M. Celejewski, M. Alaee, A.J. Simpson and M.J. Simpson.  Metabolic responses of Eisenia fetida after sub-lethal exposure to organic contaminants with different toxic modes of action.  Environmental Pollution (in press).

-Lankadurai, B.P., D.M. Wolfe, A.J. Simpson and M.J. Simpson. 2011. 1H NMR-based metabolomics of time-dependent responses of Eisenia fetida to sub-lethal phenanthrene exposure. Environmental Pollution (in press).

-Pedersen, J. A., M. J. Simpson, K. F. Rubert, X. Dai and J. G. Bockheim.  Characterization of soil organic carbon in drained thaw lake basins of arctic Alaska using NMR and FTIR photoacoustic spectroscopy.  Organic Geochemistry (in press)

-Pautler, B.G., A. J. Simpson, M. J. Simpson, L-H. Tseng, M. Spraul, A. Dubnick, M. J. Sharp, and S. J. Fitzsimons. 2011. Detection and structural identification of dissolved organic matter in Antarctic glacial ice at natural abundance by SPR-W5-WATERGATE 1H NMR spectroscopy. Environmental Science & Technology 45:4710-4717.

-Woods, G. C., M. J. Simpson, P. J. Koerner, A. Napoli, and A. J. Simpson. 2011. HILIC-NMR: towards the identification of individual molecular components in dissolved organic matter. Environmental Science & Technology 45:3880-3886.

-Feng, X., and M. J. Simpson.  2011. Soil organic matter molecular-level methods for monitoring ecosystem responses to global climate change.  Journal of Environmental Monitoring 13:1246-1254.

-Whitfield Aslund, M., A. J. Simpson and M. J. Simpson. 2011. 1H NMR metabolomics of earthworm responses to polychlorinated biphenyl (PCB) exposure in soil.  Ecotoxicology20:836–846.

-Lankadurai, B. P., D. Wolfe, A. J. Simpson, and M. J. Simpson.  2011. Concentration-dependence of earthworm responses to phenanthrene exposure.  Environmental Chemistry 8:105–114.

-Simpson, M. J. and A. J. Simpson.  2011. The role of organic matter-mineral interactions in the sorption of organic contaminants.  In "Biophysico-Chemical Processes Involving Natural Nonliving Organic Matter in Environmental Systems" Volume 3. B. Xing, N. Senesi, and P.-M. Huang (editors). IUPAC-sponsored Wiley Series. pp 73-90.

-Simpson, A.J., D. J. McNally, and M. J. Simpson. 2011. NMR spectroscopy in environmental research: from molecular interactions to global processes. Progress in Nuclear Magnetic Resonance Spectroscopy 58:97-175.

-Whitfield Aslund, M., M. Celejewski, B. P. Lankadurai, A. J. Simpson and M. J. Simpson.  2011. Observations of metabolic correlations and natural variability in the metabolic profile in a healthy Eisenia fetida earthworms using 1H NMR metabolomics.  Chemosphere 83:1096-1101.