These are all peer-reviewed journal articles published by me and my research group. PDF's are available for download by clicking on the titles.
2011
Li C, Sessions AL, Thiagarajan N, Valentine D (2011) D/H variations of terrestrial lipids from Santa Barbara Basin over the past 1400 years: A preliminary assessment of paleoclimatic relevance. Organic Geochemistry 42, 15-24.
2010
Feakins SJ and Sessions AL (2010b) Crassulacean acid metabolism influences D/H ratio of leaf wax in succulent plants. Organic Geochemistry 41, 1269-1276.
Niedermeyer E, Schefuss E, Sessions AL, Mulitza S, Mollenhauer G, Schulz M, Wefer G (2010) Orbital- and millennial-scale changes in the hydrologic cycle and vegetation in the western African Sahel: insights from individual plant wax δD and δ13C. Quaternary Science Reviews 29, 2996-3005.
Redmond MC,
Valentine DL, Sessions AL (2010) Identification of novel methane-, ethane-,
and propane-oxidizing bacteria at marine hydrocarbon seeps identified by stable
isotope probing. Applied and Environmental
Microbiology 76, 6412-6422.
Welander PV,
Coleman ML, Sessions AL, Summons RE, Newman DK (2010) Identification of a methylase required for 2-methylhopanoid
production and implications for the interpretation of sedimentary hopanes. Proceedings
of the National Academy of Sciences 107, 8537-8542.
Li C, Love GD, Lyons TW, Fike DA, Sessions AL, and Chu X (2010) A stratified redox model for the Ediacaran Ocean. Science 328, 80-83.
Feakins SJ and Sessions AL (2010) Controls on the D/H ratios of plant leaf waxes in an arid ecosystem. Geochimica et Cosmochimica Acta 74, 2128-2141.
2009
Amrani A, Sessions AL, Adkins JF (2009) Compound-specific δ34S analysis of volatile organics by coupled GC/ICPMS. Analytical Chemistry 81, 9027-9034.
Wang Y and Sessions AL (2009) Equilibrium 2H/1H fractionations in organic molecules. I. Experimental calibration of ab initio calculations. Geochimica et Cosmochimica Acta 73, 7060-7075.
Wang Y and Sessions AL (2009) Equilibrium 2H/1H fractionations in organic molecules. II. Linear alkanes, alkenes, ketones, carboxylic acids, esters, alcohols and ethers. Geochimica et Cosmochimica Acta 73, 7076-7086.
Marshall AO, Corsetti F, Sessions AL, and Marshall C (2009) Raman spectroscopy and biomarker analysis reveal multiple carbon inputs in a Precambrian glacial sediment. Organic Geochemistry 40, 1115-1123.
Sessions AL, Doughty DM, Welander PV, Summons RE, and Newman DK (2009) The continuing puzzle of the great oxidation event. Current Biology 19, R567-R574.
Welander PV, Hunter RC, Zhang L, Sessions AL, Summons RE, Newman DK (2009) Hopanoids play a role in membrane integrity and pH homeostasis in
Rhodopseudomonas palustris TIE-1. Journal
of Bacteriology 191, 6145-6156.
Zhang X,
Gillespie A, Sessions AL (2009). Large D/H variations in
bacterial lipids reflect central metabolic pathways. Proceedings of the National Academy of Science, USA 106(31), 12580-12586.
Li C, Sessions AL, Kinnamen F, Valentine DL (2009). Hydrogen-isotopic
variability in lipids from Santa Barbara Basin sediments. Geochimica et Cosmochimica Acta 73, 4803-4823.
Campbell BJ, Li C, Sessions AL, and Valentine DL (2009) Hydrogen isotopic fractionation in lipid biosynthesis by H2-consuming Desulfobacterium autotrophicum. Geochimica et Cosmochimica Acta 73, 2744-2757.
Sauer PE, Schimmelmann A, Sessions AL, and Topalov K (2009). Simplified batch equilibration for D/H determination of non-exchangeable hydrogen in solid organic material. Rapid Communications in Mass Spectrometry 23, 949-956.
2008
Wang, Ying and Sessions, Alex L. (2008). Memory Effects in Compound-Specific D/H Analysis by GC/P/IRMS. Analytical Chemistry 80, 9162-9170.
Jones, Ashley, Sessions, Alex L., Campbell, Brian J., Li, Chao, Valentine, David L. (2008). D/H ratios of fatty acids from marine particulate organic matter in the California Borderland Basins. Organic Geochemistry 39, 485-500.
Pearson, Ann, Kraunz, Kimberly S, Sessions, Alex L., Dekas, Anne E., Leavitt, William R., Edwards, Katrina J. (2008). Quantifying microbial utilization of petroleum hydrocarbons in salt-marsh sediments using the 13C content of bacterial rRNA. Applied and Environmental Microbiology 74, 1157-1166.
2007
Rashby S.E., Sessions A.L., Summons R.E., and Newman D.K. (2007). Biosynthesis of 2-methylbacteriohopanepolyols by an anoxygenic phototroph. Proceedings of the National Academy of Science 104, 15099-15104.
2006
Eek K.M., Sessions A.L., and Lies D.P. (2006). Carbon-isotopic analysis of microbial cells sorted by flow cytometry. Geobiology 5, 85-95.
Sessions A.L. (2006). Isotope-ratio detection for gas chromatography. Journal of Separation Science 29, 1946-1961.
Schimmelmann A., Sessions A.L., and Mastalerz M. (2006). Hydrogen isotopic (D/H) composition of organic matter during diagenesis and thermal maturation. Annual Reviews of Earth and Planetary Sciences 34, 501-533.
Sessions A.L. (2006) Seasonal changes in lipid D/H fractionation by Spartina alterniflora. Geochimica et Cosmochimica Acta, 70, 2153-2162.
2005
Olcott A.N., Sessions A.L., Corsetti F. A., Kaufmann A.J., de Olieviera T.F. (2005) Biomarker evidence for photosynthesis during Neoproterozoic glaciation. Science 310, 471-474.
Sessions A.L., Sylva S.P., and Hayes J.M. (2005) A moving-wire device for carbon-isotopic analyses of nanogram quantities of nonvolatile organic carbon. Analytical Chemistry 77, 6519-6527.
Sessions A. L. and Hayes J.M. (2005) Calculation of hydrogen isotopic fractionations in biogeochemical systems. Geochimica et Cosmochimica Acta 69, 593-597.
2004
McDuffie K.E., Eglinton T.I., Sessions A.L., Sylva S.P., Wagner T., and Hayes J.M. (2004) Rapid analysis of 13C in plant-wax n-alkanes for reconstruction of terrestrial vegetation signals from aquatic sediments. Geochemistry, Geophysics, Geosystems 5, Q10004.
Pearson A., Sessions A. L., Edwards K. J, and Hayes J.M. (2004) Phyllogenetically specific separation of rRNA from prokaryotes for isotopic analysis. Marine Chemistry 92, 295-306.
Valentine D.L., Sessions A.L., Tyler S.C., and Chidthaisong, A. (2004) Hydrogen isotope fractionation during H2/CO2 acetogenesis: hydrogenase efficiency and the origin of lipid-bound hydrogen. Geobiology 2, 179-188.
Schimmelmann A., Sessions A.L., Boreham C.J., Edwards D.S., Logan G.A., and Summons R.E. (2004) D/H ratios in terrestrially sourced petroleum systems. Organic Geochemistry 35, 1160-1195.
Sessions A.L., Sylva S.P., Summons R.E., and Hayes J.M. (2004) Isotopic exchange of carbon-bound hydrogen over geologic timescales. Geochimica et Cosmochimica Acta 68,1545-1559.
Schneider R.J., Kim S.-W., von Reden K.F., Hayes J.M., Wills J.S.C., Griffin V., Sessions A.L., and Sylva S.P. (2004). A gas ion source for continuous-flow AMS. Nuclear Instruments and Methods in Physics Research (B) 223-224, 149-154
2002
Sessions A. L., Jahnke L. L., Schimmelmann A., and Hayes J. M. (2002) Hydrogen isotope fractionation in lipids of the methane-oxidizing bacterium Methylococcus capsulatus. Geochimica et Cosmochimica Acta 66, 3955-3969.
2001
Sauer P. E., Eglinton T. I., Hayes J. M., Schimmelmann A., and Sessions A. L. (2001) Compound-specific D/H ratios of lipid biomarkers from sediments as a proxy for environmental and climatic conditions. Geochimica et Cosmochimica Acta 65, 213-222.
Sessions A. L., Burgoyne T. W., and Hayes J. M. (2001) Correction of H3+ contributions in hydrogen isotope ratio monitoring mass spectrometry. Analytical Chemistry 73, 192-199.
Sessions A. L., Burgoyne T. W., and Hayes J. M. (2001) Determination of the H3 Factor in hydrogen isotope ratio monitoring mass spectrometry. Analytical Chemistry 73, 200-207.
1999
Sessions A. L., Burgoyne T. W., Schimmelmann A., and Hayes J. M. (1999) Fractionation of hydrogen isotopes in lipid biosynthesis. Organic Geochemistry 30, 1193-1200.