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RESEARCH PUBLICATIONS

2018

- Wang, J-J., M.J. Lafrenière, S.F. Lamoureux, A.J. Simpson, Y. Gélinas, and M.J. Simpson. 2018. Differences in riverine and pond water dissolved organic matter composition and sources in Canadian High Arctic watersheds affected by active layer detachments. Environmental Science & Technology (in press).
- Olivelli, M.S., M.J. Simpson, N.F. Porzionato, M.A. Fernández, R.M. Torres Sánchez, and G. Curutchet. 2018. Study of physicochemical changes of a polluted sediment from Reconquista river basin (Argentina) after remediation processes. International Journal of Environment and Health (in press).
- Dani, V.D., A.J. Simpson, and M.J. Simpson. 2018. Analysis of earthworm sub-lethal toxic responses to atrazine exposure using 1H nuclear magnetic resonance (NMR)-based metabolomics. Environmental Toxicology & Chemistry 37: 473–480.
- Simpson, A.J., M.J. Simpson, and R. Soong. 2018. Environmental nuclear magnetic resonance spectroscopy: An overview and a primer. Analytical Chemistry  90:628−639.


2017

- Fortier-McGill, B., R. Dutta Majumdar, L. Lam, R. Soong, Y. Liaghati Mobarhan, A. Sutrisno, R. de Visser, M.J. Simpson, H. Wheeler, M.M. Campbell, A. Gorissen, and A.J. Simpson. 2017. Comprehensive multiphase (CMP) NMR monitoring of the structural changes and molecular flux within a growing seed. Journal of Agricultural and Food Chemistry 65:6779–678.
- Tamura, M., V. Suseela, M.J. Simpson, B. Powell, and N. Tharayil. 2017. Plant litter chemistry alters the content and composition of organic carbon associated with soil mineral and aggregate fractions in invaded ecosystems. Global Change Biology 23: 4002–4018.
- Wang, J-J., O, Pisani, L.H. Lin, O.Y. Lun, R.D. Bowden, K. Lajtha, A.J. Simpson, and M.J. Simpson. 2017. Long-term litter manipulation alters soil organic matter turnover in a temperate forest. Science of the Total Environment. 607–608:865–875.
- Lajtha, K., R.D. Bowden, S. Crow, I. Fekete, Z. Kotroczó, A. Plante, M.J. Simpson, and K. Nadelhoffer. The Detrital Input and Removal Treatment (DIRT) network. Reference Module in Earth Systems and Environmental Sciences, Elsevier doi.org/10.1016/B978-0-12-409548-9.09774-8.
- Majumdar, R.D., L. Bliumkin, D. Lane, R. Soong, M.J. Simpson, and A.J. Simpson. 2017. Analysis of dissolved organic matter phototransformation using a looped NMR system integrated with a sunlight simulator. Water Research. 120:64-76.

- Simpson, M.J., A.J. Simpson, and W.L. Kingery. Solid-state 13C nuclear magnetic resonance (NMR) analysis of soil organic matter. 2017. Reference Module in Earth Systems and Environmental Sciences, Elsevier doi.org/10.1016/B978-0-12-409548-9.10275-1.
- Nagato, E. G., and M. J. Simpson. NMR-based metabolomics of
Daphnia magna: Insights into aquatic ecosystem health. eMagRes 6: 315–324 .
- Kariuki, M.N., E.G. Nagato, B.P. Lankadurai, A.J. Simpson, and M.J. Simpson. 2017. Analysis of sub-lethal toxicity of perfluorooctane sulfonate (PFOS) to
Daphnia magna using 1H nuclear magnetic resonance-based metabolomics. Metabolites 7:15-28.
- Wagner, N. D., A. J. Simpson, and M. J. Simpson. 2017. Metabolomic responses to sublethal contaminant exposure in neonate and adult
Daphnia magna. Environmental Toxicology and Chemistry 36:938–946.
- Korosi, J., J.R. Thienpont, M.F.J. Pisaric, P. deMontigny, J.T. Perreault, J. McDonald, M.J. Simpson, T. Armstrong, S.V. Kokelj, J.P. Smol, and J.M. Blais. Broad-scale lake expansion and flooding inundates critical wood bison habitat. Nature Communications 8:14510-14518.
- Simpson, M. J., and A. J. Simpson. NMR of soil organic matter. 2017. Encyclopedia of Spectroscopy and Spectrometry, 3rd edition. John C. Lindon (ed). 3:170-174. Elsevier doi.org/10.1016/B978-0-12-409547-2.12169-9.



2016

- Mitchell, P. M., A. J. Simpson, R. Soong, J. Schurman, S. Thomas, and M. J. Simpson. 2016. Biochar amendment and phosphorus fertilization altered forest soil microbial community and native soil organic matter molecular composition. Biogeochemistry  130:227–245.
- Mitchell, P. M., A. J. Simpson, R. Soong, and M. J. Simpson. 2016. Biochar amendment alters the molecular-level composition of native soil organic matter in a temperate forest soil. Environmental Chemistry    13:854–866.
- Pisani, O., M. L. Haddix, R. T. Conant, E. A. Paul, and M. J. Simpson.  2016.  Molecular composition of soil organic matter with land-use change along a bi-continental mean annual temperature gradient.  Science of the Total Environment 573:470-480.
- Perhar, G., N. Kelly, F. Ni, M. J. Simpson, A. J. Simpson, and G. B. Arhonditsis. 2016. Using daphnia physiology to drive food web dynamics: A theoretical revisit of Lotka-Volterra models. Ecological Informatics 35: 29–42.
- Kovacevic, V., A. J. Simpson and M. J. Simpson. 2016. 1H NMR-based metabolomics of Daphnia magna responses after sub-lethal exposure to triclosan, carbamazepine and ibuprofen. Comparative Biochemistry and Physiology Part D: Genomics and Proteomics  19:199-210 .
- Akhter, M., R. D. Majumdar, B. Fortier-McGill, R. Soong, Y. Liaghati Mobarhan, M, J. Simpson, G. Arhonditsis, S. Schmidt, H. Heumann, and A. J. Simpson. 2016. Identification of aquatically available carbon from algae through solution-state NMR of whole 13C-labelled cells. Analytical and Bioanalytical Chemistry 408: 4357-4370.
- Grewer, D. M., M. J. Lafrenière, S. F. Lamoureux, and M. J. Simpson. Redistribution of soil organic matter by permafrost disturbance in the Canadian High Arctic. Biogeochemistry 128:397–415.
- Lin, L. H., and M. J. Simpson. 2016. Enhanced extractability of cutin- and suberin-derived organic matter with demineralization implies physical protection over chemical recalcitrance in soil. Organic Geochemistry 97:111–121.
- Saini, A., C. Rauert, M. J. Simpson, S. Harrad, and M. L. Diamond. 2016. Characterizing the sorption of polybrominated diphenyl ethers (PBDEs) to cotton and polyester fabrics under controlled conditions. Science of the Total Environment 563–564: 99–107.
- Masoom, H., D. Courtier-Murias, H. Farooq, R. Soong, B. P. Kelleher, C. Zhang, W. E. Maas, M. Fey, R. Kumar, M. Monette, H. J. Stronks, M. J. Simpson, and A. J. Simpson. 2016. Soil organic matter in its native state: Unravelling the most complex biomaterial on earth. Environmental Science & Technology 50: 1670–1680.
- Porter, T. J., D. G. Froese, S. J. Feakins, I. N. Bindeman, M. E. Mahony, B. G. Pautler, G-J. Reichart, P. T. Sanborn, M. J. Simpson, and J. W. H. Weijers. 2016. Multiple water isotope proxy reconstruction of extremely low last glacial temperatures in Eastern Beringia (Western Arctic). Quaternary Science Reviews 137:113-125.
- Pisani, O., L. H. Lin, O. Y. Lun, K. Lajtha, K. J. Nadelhoffer, A. J. Simpson, and M. J. Simpson. 2016. Long-term doubling of litter inputs accelerates soil organic matter degradation and reduces soil carbon stocks. Biogeochemistry 127:1-14. 
- Nagato, E. G., A. J. Simpson and M. J. Simpson. 2016. Metabolomics reveals energetic impairments in Daphnia magna exposed to diazinon, malathion and bisphenol-A. Aquatic Toxicology 170:175-186.

2015

- Masoom, H., D. Courtier-Murias, R. Soong, W. E. Maas, M. Fey, R. Kumar, M. Monette, H. J. Stronks, M. J. Simpson, and A. J. Simpson. 2015. From spill to sequestration: The molecular journey of contamination via comprehensive multiphase NMR. Environmental Science & Technology 49:13983−13991.
- Farooq, H., D. Courtier-Murias, M. J. Simpson, W. E. Maas, M. Fey, B. Andrew, J. Struppe, H. Hutchins, S. Krishnamurthy, R. Kumar, M. Monette, H. J. Stronks, and A. J. Simpson. 2015. Characterisation of oil contaminated soils by comprehensive multiphase NMR spectroscopy. Environmental Chemistry. 12:227-235.
- Korosi, J., J. McDonald, K. Coleman, M. Palmer, J. P. Smol, M. J. Simpson, and J. Blais. 2015. Long-term changes in organic matter and mercury transport to lakes in the sporadic discontinuous permafrost zone related to peat subsidence. Limnology and Oceanography 60:1550–1561.
- Nagato, E. G., B. P. Lankadurai, R. Soong, A. J. Simpson, and M. J. Simpson. 2015. Development of an NMR microprobe procedure for high-throughput environmental metabolomics of Daphnia magna. Magnetic Resonance in Chemistry 53:745–753. 
- Lankadurai, B. P., E. Nagato, A. J. Simpson and M. J. Simpson. 2015. Analysis of Eisenia fetida earthworm responses to sub-lethal C60 nanoparticle exposure using 1H-NMR based metabolomics. Ecotoxicology and Environmental Safety 120:48-58.
- Pisani, O., S. D. Frey, A. J. Simpson and M. J. Simpson. 2015. Soil warming and nitrogen deposition alter soil organic matter composition at the molecular-level. Biogeochemistry 123:391–409.
- Wagner, N. D., B. P. Lankadurai, M. J. Simpson, A. J. Simpson and P. C. Frost. 2015. Metabolomic differentiation of nutritional stress in an aquatic invertebrate. Physiological and Biochemical Zoology 88:43–52.
- Marshall, M. H. M., J. McKelvie, A. J. Simpson, and M. J. Simpson. 2015. Characterization of natural organic matter in bentonite clays for potential use in deep geological repositories for used nuclear fuel. Applied Geochemistry 54: 43–53.
- Battram, N. B., N. Eyles, P.-S. Lau, and M. J. Simpson. 2015. Organic matter biomarker analysis as a potential chemostratigraphic tool for Late Pleistocene tills from the Hudson Bay Lowlands, Canada. Palaeogeography, Palaeoclimatology, Palaeoecology 418: 377-385.
- Grewer, D. M., M. J. Lafrenière, S. F. Lamoureux, and M. J. Simpson. 2015. Potential shifts in Canadian High Arctic sedimentary organic matter composition with permafrost active layer detachments. Organic Geochemistry 79:1-13.
- Mitchell, P. M., A. J. Simpson, R. Soong and M. J. Simpson. 2015. Shifts in microbial community and water-extractable organic matter composition with biochar amendment in a temperate forest soil. Soil Biology and Biochemistry 81:244-254.

2014

- NMR Spectroscopy: A Versatile Tool for Environmental Research, 2014, edited by Myrna Simpson and André Simpson. 448pp. Wiley (UK).
- Courtier-Murias, D., H. Farooq, J. G. Longstaffe, B. P. Kelleher, K. M. Hart, M. J. Simpson, and A. J. Simpson. 2014. Cross polarization-single pulse/magic angle spinning (CPSP/MAS): A robust technique for routine soil analysis by solid-state NMR. Geoderma 226-227:405-414.
- Pisani, O., K. M. Hills, D. Courtier-Murias, R. Conant, M. Haddix, E. A. Paul, A. J. Simpson, G. B. Arhonditsis, and M. J. Simpson. 2014. Accumulation of aliphatic compounds in soil with increasing mean annual temperature. Organic Geochemistry 76:118-127.
- Genest, S. C., M. J. Simpson, A. J. Simpson, R. Soong, and D. J. McNally. 2014. Analysis of soil organic matter at the solid-water interface by nuclear magnetic resonance spectroscopy. Environmental Chemistry 11:472–482.
- Mitchell, P. M., A. J. Simpson and M. J. Simpson. 2014. Dissolved organic matter. In "NMR Spectroscopy: A versatile tool for environmental research" M. J. Simpson and A. J. Simpson (editors) Wiley (UK), pp177-192.
- Simpson, A. J., D. Courtier-Murias, J. G. Longstaffe, H. Masoom, R. Soong, L. Lam, A. Sutrisno, H. Farooq, M. J. Simpson, W. E. Maas, M. Fey, B Andrew., J. Struppe, H. Hutchins, S. Krishnamurthy, R. Kumar, M. Monette and H. J. Stronks. 2014. Environmental comprehensive multiphase NMR. In "NMR Spectroscopy: A versatile tool for environmental research" M. J. Simpson and A. J. Simpson (editors) Wiley (UK), pp103-120.
- Simpson, M. J. and D. W. Bearden. 2014. Environmental metabolomics: NMR techniques. In "NMR Spectroscopy: A versatile tool for environmental research" M. J. Simpson and A. J. Simpson (editors) Wiley  (UK), pp363-374.
- Whalen, J. K., G. Shamim, V. Poirier, S. F. Yanni, M. J. Simpson, J. S. Clemente, X. Feng, S. J. Grayston, J. Barker, K. Ishimaru, E. G. Gregorich, D. A. Angers, P. Rochette, and H. H. Janzen. Transforming plant carbon into soil carbon: Process-level controls on carbon sequestration. 2014. Canadian Journal of Plant Science 94:1065-1073.
- Pautler, B. P., G.-J. Reichart, P. Sanborn, M. J. Simpson, and J. Weijers. 2014. Comparison of soil derived tetraether membrane lipid distribution and plant-wax δD compositions for reconstruction of Canadian Arctic temperatures. Palaeogeography, Palaeoclimatology, Palaeoecology 404:78-88.
- Lam L., R. Soong, A, Sutrisno, R. de Visser, M. J. Simpson, H. L. Wheeler, M. M. Campbell, W. E. Maas, M. Fey, R. Kumar, M. Monette, H. J. Stronks, and A. J. Simpson. 2014. Comprehensive multiphase NMR spectroscopy of intact 13C-labeled seeds. Journal of Agricultural and Food Chemistry 62:107−115.

2013

- Simpson, A. J., D. Courtier-Murias, J. G. Longstaffe, H. Masoom, R. Soong, L. Lam, A. Sutrisno, H. Farooq, M. J. Simpson, W. E. Maas, M. Fey, B Andrew., J. Struppe, H. Hutchins, S. Krishnamurthy, R. Kumar, M. Monette and H. J. Stronks. 2013. Environmental comprehensive multiphase NMR. eMagRes 2:399–414.
- Mitchell, P. M., A. J. Simpson and M. J. Simpson. 2013. Dissolved organic matter. eMagRes 2:503–516.
- Simpson, M. J. and D. W. Bearden. 2013. Environmental metabolomics: NMR techniques. eMagRes 2:549–560.
- Pautler, B. P., P. Sanborn, A. J. Simpson, and M. J. Simpson. 2013. Molecular characterization of organic matter in Canadian Arctic paleosols for paleoecological applications. Organic Geochemistry 63:122-138.
- Lankadurai, B. P., V. I. Furdui, E. J. Reiner, A. J. Simpson, and M. J. Simpson. 2013. 1H NMR-based metabolomic analysis of sub-lethal perfluorooctane sulfonate exposure to the earthworm, Eisenia fetida, in soil. Metabolites 3:718-740.
- Mitchell, P. J., A. J. Simpson, R. Soong, A. Oren, B. Chefetz, and M. J. Simpson. 2013. Solution-state NMR investigation of the sorptive fractionation of dissolved organic matter by alkaline mineral soils. Environmental Chemistry 10:333-340. Selected by Editorial Board for the 2013 Highlights Issue.
- Nagato, E. G., J. C. D’eon, B. P. Lankadurai, D. G. Poirier, E. J. Reiner, A. J. Simpson, and M. J. Simpson. 2013. 1H NMR-based metabolomics investigation of daphnia magna responses to sub-lethal exposure to arsenic, copper and lithium. Chemosphere 93:331-337.
- Lankadurai, B. P., E. G. Nagato, and M. J. Simpson. 2013. Environmental metabolomics: An emerging approach to study organism responses to environmental stressors. Environmental Reviews 21:180–205.
- Whitfield Aslund, M., G. Stephenson, A. J. Simpson and M. J. Simpson. 2013. Comparison of earthworm responses to petroleum hydrocarbon exposure in aged field contaminated soil using traditional ecotoxicity endpoints and 1H NMR-based metabolomics. Environmental Pollution 182:263-268.
- Pisani, O., K. M. Hills, D. Courtier-Murias, A. J. Simpson, N. J. Mellor, E. A. Paul, S. J. Morris and M. J. Simpson. 2013. Molecular-level analysis of long-term vegetative shifts and relationships to soil organic matter composition. Organic Geochemistry 62:7-16.
- Clemente, J. S., and M. J. Simpson. 2013. Physical protection of lignin from chemical oxidation by organic matter and clay minerals. Organic Geochemistry 58:1-12.
- Farooq, H., D. Courtier-Murias, R. Soong, H. Masoom, W. Maas, M. Fey, R. Kumar, M. Monette, H. Stronks, M. J. Simpson and A. J. Simpson. 2013. Rapid parameter optimization of low signal-to-noise samples in NMR spectroscopy using rapid CPMG pulsing during acquisition: application to recycle delays. Magnetic Resonance in Chemistry 51:129-135.
- McKelvie, J. R, M. Whitfield Aslund, M. Celejewski, A. J. Simpson and M. J. Simpson. 2013. Reduction in the earthworm metabolomic response after phenanthrene exposure to soils with increasing soil organic carbon content. Environmental Pollution 175:75-81.
- Yuk, J., M. J. Simpson and A. J. Simpson. 2013. 1-D and 2-D NMR-based metabolomics of earthworms exposed to endosulfan and endosulfan sulfate in soil. Environmental Pollution 175:35-44.
- Lankadurai, B. P., D. M. Wolfe, M. L. Whitfield Aslund, A. J. Simpson and M. J. Simpson. 2013. 1H NMR-based metabolomic analysis of polar and non-polar earthworm metabolites after sub-lethal exposure to phenanthrene. Metabolomics 9:44-56.
- Mitchell, P.J. and M.J. Simpson. 2013. High affinity sorption domains in soil are blocked by polar soil organic matter components. Environmental Science & Technology 47:412−419.
- Masoom, H., D. Courtier-Murias, R. Soong, H. Farooq, W. Maas, M. Fey, R. Kumar, M. Monette, H. Stronks, M. J. Simpson and A. J. Simpson. 2013. Rapid estimation of nuclear magnetic resonance experiment time in low-concentration environmental samples. Environmental Toxicology & Chemistry 32:129–136.
- Pautler, B.G., A. Dubnick, M. J. Sharp, A. J. Simpson, and M. J. Simpson. 2013. Comparison of cryoconite organic matter composition from Arctic and Antarctic glaciers at the molecular-level. Geochimica et Cosmochimica Acta 104:1-18.
- Clemente, J. S., M. J. Simpson, A. J. Simpson, S. Yanni, and J. K. Whalen. 2013. Comparison of soil organic matter composition after incubation with maize leaves, roots, and stems. Geoderma 192: 86–96.

2012

- Lankadurai, B.P., A. J. Simpson and M. J. Simpson. 2012. Elucidation of the toxic mode of action of perfluorooctanoic acid and perfluorooctane sulfonate to the earthworm Eisenia fetida after sub-lethal exposure using 1H NMR-based metabolomics. Environmental Chemistry 9: 495–501.
- Simpson, A. J., M. J. Simpson and R. Soong. 2012. Nuclear magnetic resonance spectroscopy and its key role in environmental research. Environmental Science & Technology 46:11488 –11496.
- Longstaffe, J. G., D. Courtier-Murias, R. Soong, M. J. Simpson, W. E. Maas, M. Fey, H.Hutchins, S. Krishnamurthy, J. Struppe, M. Alaee, R. Kumar, M. Monette, H. J. Stronks, and A. J. Simpson. 2012.In-situ molecular-level elucidation of organofluorine binding sites in a whole peat soil. Environmental Science & Technology 46:10508–10513.
- Whitfield Aslund, M. L., M. J. Simpson, A. J. Simpson, B. A. Zeeb and A. Rutter. 2012. Earthworm metabolomic responses after exposure to aged PCB contaminated soils. Ecotoxicology 21:1947–1956.
- Yuk J., M. J. Simpson and A. J. Simpson. 2012. Coelomic fluid: A complimentary biological medium to assess sub-lethal endosulfan exposure using 1H NMR-based earthworm metabolomics. Ecotoxicology 21:1301–1313.
- Simpson, M. J. and A. J. Simpson. 2012. The chemical ecology of soil organic matter molecular constituents. Journal of Chemical Ecology 38:768–784.
- Woods, G.C., M. J. Simpson, and A. J. Simpson. 2012. Oxidized sterols as a significant component of dissolved organic matter: Evidence from 2D HPLC in combination with 2D and 3D NMR spectroscopy. Water Research 46:3398-3408.
- Courtier-Murias D., H. Farooq, H. Masoom, A. Botana, R. Soong, J. G. Longstaffe, M. J. Simpson, W. Maas, M. Fey, B. Andrew, J. Struppe, H. Hutchins, S. Krishnamurthy, R. Kumar, M. Monette, H. Stronks, A. Hume, and A. J. Simpson. 2012. Comprehensive multiphase NMR spectroscopy: Basic experimental approaches to differentiate phases in heterogeneous samples. Journal of Magnetic Resonance 217:61-76.
- Pautler, B.G., G. Woods, A. Dubnick, A. J. Simpson, M. J. Sharp, S. J. Fitzsimons and M. J. Simpson. 2012. Molecular characterization of dissolved organic matter in glacial ice: Coupling natural abundance 1H NMR and fluorescence spectroscopy. Environmental Science & Technology 46:3753–3761.
- Clemente, J., E. Gregorich, A. J. Simpson, R. Kumar, D. Courtier-Murias, and M. J. Simpson. 2012. Comparison of nuclear magnetic resonance methods for the analysis of organic matter composition from soil density and particle fractions. Environmental Chemistry 9:97-107.
- Whitfield Aslund, M., H. McShane, M. J. Simpson, A. J. Simpson, J. Whalen, W. Hendershoot, and G. Sunahara. 2012. Earthworm sub-lethal responses to titanium dioxide nanomaterial in soil detected by 1H NMR metabolomics. Environmental Science & Technology 46:1111–1118. 

2011

- 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 75: 7226-7241.
- 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 8: 281-294.
- McKelvie, J.R, D. Wolfe, M. Celejewski, M. Alaee, A.J. Simpson and M.J. Simpson. 2011. Metabolic responses of Eisenia fetida after sub-lethal exposure to organic contaminants with different toxic modes of action. Environmental Pollution 159:3620-3626.
- Clemente, J., M. J. Simpson and A. J. Simpson. 2011. Association of specific organic matter compounds in size fractions of soils under different environmental controls. Organic Geochemistry 42:1169-1180.
- Pedersen, J. A., M. J. Simpson, K. F. Rubert, X. Dai and J. G. Bockheim. 2011. Characterization of soil organic carbon in drained thaw lake basins of arctic Alaska using NMR and FTIR photoacoustic spectroscopy. Organic Geochemistry 42:947-954.
- 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 159: 2845-2851.
- 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.
- Whitfield Aslund, M., A. J. Simpson and M. J. Simpson. 2011. 1H NMR metabolomics of earthworm responses to polychlorinated biphenyl (PCB) exposure in soil. Ecotoxicology 20:836–846.
- Feng, X., and M. J. Simpson. 2011. Molecular-level methods for monitoring soil organic matter responses to global climate change. Journal of Environmental Monitoring 13:1246-1254.
- 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. pp73-90. 
- 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.
- Feng, X., K. Hills, A. J. Simpson, J. Whalen and M. J. Simpson. 2011. The role of biodegradation and photo-oxidation in the transformation of terrestrial organic matter. Organic Geochemistry 42: 262-274.
- Yanni, S.F., J. K. Whalen, M. J. Simpson, and H. H. Janzen. 2011. Lignin controls carbon dioxide production and nitrogen mineralization from soils incubated with Bt and non-Bt corn residues. Soil Biology & Biochemistry 43:63-69.

2010

- Yuk, J., J. R. McKelvie, M. J. Simpson, M. Spraul, and A. J. Simpson. 2010. Comparison of 1D and 2D NMR techniques for screening earthworm responses to sub-lethal endosulfan exposure. Environmental Chemistry 7:524-536.
- Feng, X, A. J. Simpson, E. G. Gregorich, B. Elberling, D. W. Hopkins, A. D. Sparrow, P. Novish, L. G. Greenfield and M. J. Simpson. 2010. Chemical signatures of microbial-dominated soil organic matter in the Garwood Valley, Antarctica. Geochimica et Cosmochimica Acta 74:6485-6498.
- Pautler, B. G., J. Austin, A. Otto, K. Stewart, S. F. Lamoureux, and M. J. Simpson. 2010. Biomarker assessment of organic matter sources and degradation in Canadian High Arctic littoral sediments. Biogeochemistry 100:75-87.
- Longstaffe, J., M. J. Simpson, W. Maas, and A. J. Simpson. 2010. Identifying components in soil humic acid that bind organofluorine contaminants using 1H {19F} reverse heteronuclear saturation transfer difference NMR spectroscopy. Environmental Science & Technology 44:5476–5482.
- Pautler, B. G., A. J. Simpson, D. J. McNally, S. Lamoureux, and M. J. Simpson. 2010. Arctic permafrost active layer detachments stimulate microbial activity and degradation of soil organic matter. Environmental Science & Technology 44:4076-4082.
- Feng, X., A. J. Simpson, W. H. Schlesinger, and M. J. Simpson. 2010. Altered microbial community structure and organic matter composition under elevated CO2 and N fertilization in the Duke Forest. Global Change Biology 16:2104-2116.
- McKelvie, J. R., D. M. Wolfe, M. Celejewski, A. J. Simpson, and M. J. Simpson. 2010. Correlations of Eisenia fetida metabolic responses to extractable phenanthrene concentrations through time. Environmental Pollution 158:2150-2157.
- Brown, S. A. E., J. R. McKelvie, A. J. Simpson, and M. J. Simpson.   . 2010. 1H NMR metabolomics of earthworm exposure to phenanthrene in soil. Environmental Pollution 158:2117-2123.
- Xu, X., H. Sun and M. J. Simpson. . 2010. Concentration- and time-dependent sorption and desorption behavior of phenanthrene to geosorbents with varying organic matter composition. Chemosphere 79:772-778.
- Feng, X., Y Xu, R Jaffé, W. H. Schlesinger, and M. J. Simpson. 2010. Turnover rates of hydrolysable aliphatic lipids in Duke Forest soils determined by compound-specific 13C isotopic analysis. Organic Geochemistry 41:573-579.
- McKelvie, J. R., M. Elsner, A. J. Simpson, B. Sherwood Lollar, and M. J. Simpson. 2010. Quantitative site-specific 2H NMR investigation of MTBE: Potential for assessing contaminant sources and fate. Environmental Science & Technology 44:1062-1068.
- Woods, G., M. J. Simpson, B. P. Kelleher, M. McCaul, W. L. Kingery, and A. J. Simpson. 2010. Online HPSEC-NMR for the characterization of dissolved organic matter. Environmental Science & Technology 44:624-630.
- Xu, Y., A.J. Simpson, N. Eyles, and M.J. Simpson. 2010. Sources and molecular composition of cryoconite organic matter from the Athabasca Glacier, Canadian Rocky Mountains. Organic Geochemistry 41:177-186.

2009

- Brown, S. A. E., A. J. Simpson, and M. J. Simpson. 2009. 1H NMR metabolomics of earthworm responses to sub-lethal PAH exposure. Environmental Chemistry 6:432-440.
- Xu, Y., N. Eyles, and M. J. Simpson. 2009. Terrigenous organic matter sources in mid-Pleistocene sediments from the Orphan Knoll, Northwest Atlantic Ocean. Applied Geochemistry 24: 1934-1940.
- Simpson, M. J. and J. R. McKelvie. 2009. Environmental metabolomics: New insights into earthworm ecotoxicity and contaminant bioavailability in soil. Analytical and Bioanalytical Chemistry 394: 137-149. -

- Feng, X. and M. J. Simpson. 2009. Temperature and substrate controls on microbial phospholipid fatty acid composition during incubation of grassland soils contrasting in organic matter quality. Soil Biology & Biochemistry 41:804-812.
- Simpson, A. J. and M. J. Simpson. 2009. NMR of Natural Organic Matter, In "Biophysico-Chemical Processes Involving Natural Nonliving Organic Matter in Environmental Systems " Volume 1. B. Xing, N. Senesi, and P.-M. Huang (editors). IUPAC-sponsored Wiley Series, pp589-650. 
- McKelvie, J.R., J. Yuk, Y. Xu, A. J.Simpson and M. J. Simpson. 2009. 1H NMR and GC/MS metabolomics of Eisenia Fetida responses to DDT and Endosulfan exposure. Metabolomics 5: 84-94. 
- Xu, Y., M. P. Cooke, H. M. Talbot, and M. J. Simpson. 2009. Bacteriohopanepolyol signatures of bacterial populations in western Canadian soils. Organic Geochemistry 40: 79-86.

2008

- Feng, X., A. J. Simpson, K. P. Wilson, D. D. Williams, and M. J. Simpson. 2008. Increased cuticular carbon sequestration and lignin oxidation in response to soil warming. Nature Geoscience1:836-839.
- Feng, X. and M. J. Simpson. 2008. Temperature responses of individual soil organic matter components. Journal of Geophysical Research-Biogeosciences 113, G03036, doi:10.1029/2008JG000743.
- Shirzadi, A, M. J. Simpson, R. Kumar, A. Baer, and A. J. Simpson. 2008. Molecular interactions of pesticides at the soil-water interface. Environmental Science & Technology 42:5514-5520.
- Brown, S. A. E., A. J. Simpson and M. J. Simpson. 2008. Evaluation of sample preparation methods for 1H NMR metabolic profiling studies with Eisenia Fetida. Environmental Toxicology & Chemistry 27:828-836.
- Shirzadi, A., M. J. Simpson, Y. Xu and A. J. Simpson. 2008. The application of saturation transfer double difference NMR to elucidate the mechanistic interactions between pesticides and humic acid. Environmental Science & Technology 42:1084-1090.
- Simpson, M. J., A. Otto and X. Feng. 2008. Comparison of solid-state 13C NMR and organic matter biomarkers for assessing soil organic matter degradation. Soil Science Society of America Journal 72: 268–276. 

2007

- Simpson, A. J., M. J. Simpson, E. Smith, and B. P. Kelleher. 2007. Microbially derived inputs to soil organic matter: Are current estimates too low? Environmental Science & Technology 41:8070-8076.
- Bonin, J. L. and M. J. Simpson. 2007. Sorption of steroid estrogens to soil and soil constituents in single- and multi-sorbate systems. Environmental Toxicology & Chemistry. 26:2604-2610.
- Feng, X. and M. J. Simpson. 2007. The distribution and degradation of soil organic matter biomarkers in Alberta grassland soil profiles. Organic Geochemistry 38:1558-1570.
- Feng, X., L. L. Nielsen, and M. J. Simpson. 2007. Responses of soil organic matter and microorganisms to freeze-thaw cycles. Soil Biology & Biochemistry 39:2027-2037.
- Simpson, M. J., A. J. Simpson, D. Gross, M. Spraul, and W. L. Kingery. 2007. Application of NMR microimaging to study water distribution and contaminant transport in soil. Environmental Toxicology & Chemistry 26:1340-1348.
- Simpson, M. J., and C. M. Preston. 2007. Soil organic matter analysis by solid-state 13C nuclear magnetic resonance spectroscopy. In:Soil Sampling and Methods of Analysis, 2nd Edition, M. R. Carter and E. G. Gregorich (eds), CRC press, pp 681-692. 
- Otto, A. and M. J. Simpson. 2007. Analysis of soil organic matter biomarkers by sequential chemical degradation and gas chromatography – mass spectrometry. Journal of Separation Science 30: 272-282. 

- Bonin, J. L. and M. J. Simpson. 2007. Variation in phenanthrene sorption coefficients with soil organic matter fractionation: The result of structure or conformation? Environmental Science & Technology 41:153-159.

2006

- Kelleher, B. P., M. J. Simpson, and A. J. Simpson. 2006. Assessing the fate and transformations of plant residues in the terrestrial environment using HR-MAS NMR spectroscopy. Geochimica et Cosmochimica Acta 70:4080-4094.
- Feng, X., A. J. Simpson, and M. J. Simpson. 2006. Investigating the role of mineral-bound humic acid in phenanthrene sorption. Environmental Science & Technology 40:3260-3266.
- Shunthirasingham, C., and M. J. Simpson. 2006. Investigation of bacterial hopanoid preservation in soils from Western Canada. Applied Geochemistry 21:964-976.
- Simpson, A. J, M. J. Simpson, W. L. Kingery, B. A. Lefebvre, A. Moser, A. L. Williams, M. Kvasha, and B. P. Kelleher. 2006. The application of 1H HR-MAS NMR for the study of clay-organic associations in natural and synthetic complexes. Langmuir 22:4498-4503.
- Otto, A., and M. J. Simpson. 2006. Evaluation of CuO oxidation parameters for determining the source and stage of lignin degradation in soil. Biogeochemistry 80: 121–142.
- Otto, A., and M. J. Simpson. 2006. Sources and composition of hydrolysable aliphatic lipids and phenols in soils from Western Canada. Organic Geochemistry 37:385-407.
- Simpson, M. J. 2006. Nuclear Magnetic Resonance based investigations of contaminant interactions with soil organic matter. Soil Science Society of America Journal 70:995-1004. (Invited contribution review).
- Otto, A., R. A. Gondokusumo, and M. J. Simpson. 2006. Characterization and quantification of biomarkers from biomass burning at a recent wild fire site in Northern Alberta, Canada. Applied Geochemistry 21:166-183.
- Simpson, M. J. and P. C. E. Johnson. 2006. Identification of mobile aliphatic sorptive domains in soil humin by solid-state 13C Nuclear Magnetic Resonance. Environmental Toxicology & Chemistry 25:52-57. 

2005

- Feng, X., A. J. Simpson, and M. J. Simpson. 2005. Chemical and mineralogical controls of humic acid sorption to clay mineral surfaces. Organic Geochemistry 36:1553–1566.
- Otto, A. and M. J. Simpson. 2005. Degradation and preservation of plant-derived lipids in grassland and forest soils from Western Canada. Biogeochemistry 74:377-409.
- Otto, A.; C. S. Shunthirasingham, and M. J. Simpson. 2005. A comparison of plant and microbial biomarkers in grassland soils from the Prairie Ecozone of Canada. Organic Geochemistry 36:425-448.
- Simpson, M. J., B. Chefetz, A. P. Deshmukh, and P. G. Hatcher. 2005. Comparison of polycyclic aromatic hydrocarbon distribution and sedimentary organic matter structure in near-shore contaminated sediments from Pensacola Bay, Florida. Marine Environmental Research 59:139-163. 

2004

- Simpson, A. J., L-H. Tseng, M. J. Simpson, M. Spraul, U. Brauman, W. L. Kingery, B. P. Kelleher, M. H. B. Hayes. 2004. The application of LC-NMR and LC-SPE-NMR to the study of natural organic matter structure. The Analyst 129:1216-1222.
- Kelleher B.P., K.O. Willeford, A. J. Simpson, M. J. Simpson, R. Stout, A. Rafferty. W.L. Kingery. 2004. Acid phosphatase interactions with organo-mineral complexes: Influence on catalytic activity. Biogeochemistry 71: 285–297.
- Simpson, M. J. and P. G. Hatcher. 2004. Overestimates of black carbon in soil and sedimentary organic matter. Naturwissenschaften 91:436-440.
- Simpson, M. J. and P. G. Hatcher. 2004. Determination of black carbon in natural organic matter by chemical oxidation and solid-state 13C nuclear magnetic resonance spectroscopy. Organic Geochemistry. 35:923-935.
- Simpson, M. J., A. J. Simpson, and P. G. Hatcher. 2004. Non-covalent associations between hydrophobic organic contaminants and dissolved organic material observed by NMR. Environmental Toxicology & Chemistry 23:355-362. 

2003

 - Kelleher, B.P., S. F. Oppenheimer, F. X. Han, K. O. Willeford, M. J. Simpson, A. J. Simpson, W. L. Kingery. 2003. Dynamical systems and phase plane analysis of protease−clay interactions. Langmuir. 19: 9411-9417.
- Simpson, M. J., B. Chefetz, and P. G. Hatcher. 2003 Phenanthrene sorption to structurally modified humic acids. Journal of Environmental Quality 32:1750-1759.
- Fedorak, P. M., D. I. Coy, M. J. Dudas, M. D. MacKinnon, A. J. Renneberg, and M. J. Simpson. 2003. Microbially-mediated changes in chemical and physical properties of oil sand tailings. Journal of Environmental Engineering and Science. 2:199-211.
- Gunasekara, A. S., M. J. Simpson, and B, Xing. 2003. Identification and characterization of sorption domains in soil organic matter using structurally modified humic acids. Environmental Science & Technology 37:852-858.
- Guthrie-Nichols, E., A. Grasham, C. Kazunga, A. Gold, J. Bortiatynski, M. J. Simpson (Salloum), and P. G. Hatcher. 2003. The effect of aging on pyrene transformation in sediments. Environmental Toxicology & Chemistry 22:40-9. 

2002

- Simpson (Salloum), M. J., B. Chefetz, and P. G. Hatcher. 2002. Phenanthrene sorption by aliphatic-rich natural organic matter. Environmental Science & Technology 36:1953-1958.
- Fedorak, P. M., D. L. Coy, M. J. Simpson (Salloum) and M. J. Dudas. 2002. Methanogenic potential of tailings samples from oil sands extraction plants. Canadian Journal of Microbiology 48:21-33.
- Chefetz, B., M. J. Simpson (Salloum), A. P. Deshmukh and P. G. Hatcher. 2002. Structural components of humic acids as determined by chemical modification and 13C NMR, pyrolysis and thermochemolysis GC-MS. Soil Science Society of America Journal 66:1159-1171.
- Simpson, A. J., M. J. Simpson (Salloum), W. L. Kingery and P. G. Hatcher. 2002. Improvements in the two-dimensional NMR spectroscopy of humic substances. Journal of Environmental Quality 31: 388-392.
- Simpson (Salloum), M. J., P. M. Fedorak, and M. J. Dudas. 2002. Microbial reduction of amended sulfate in anaerobic mature oil sand fine tailings. Waste Management and Research 20:162-171. 

2001

- Simpson (Salloum), M. J., M. J. Dudas, and W. B. McGill. 2001. Variation of 1-naphthol sorption with organic matter fractionation: the role of physical conformation. Organic Geochemistry. 32:709-719.
- Simpson (Salloum), M. J., M. J. Dudas, and W. B. McGill. 2001. Sorption of 1-naphthol to soil and geologic samples with varying diagenetic properties. Chemosphere. 44:781-789. 

2000

- Simpson (Salloum), M. J., M. J. Dudas, W. B. McGill and S. M. Murphy. 2000. Surfactant sorption to soil and geologic samples with varying mineralogical and chemical properties. Environmental Toxicology & Chemistry. 19:2436-2442.

1998

- Rutherford, P. M., D. K. Banerjee, S. M. Luther, M. R. Gray, M. J. Dudas, W. B. McGill, M. A. Pickard, and M. J. Simpson (Salloum). 1998. Slurry-phase bioremediation of creosote- and petroleum- contaminated soils. Environmental Technology. 19:683-696.

1996

- Janzen, R. A., B. Xing, C. C. Gomez, M. J. Simpson (Salloum), R. A. Drijber, and W. B. McGill. 1996. Compost extract enhances desorption of α-naphthol and naphthalene from pristine and contaminated soils. Soil Biology & Biochemistry. 28:1089-1098.