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Jason Toyoda
Earth Scientist

Jason Toyoda is a chemist with EMSL's Biomolecular Pathways Integrated Research Platform. Toyoda works closely with biological high-resolution mass spectrometry, and he works mainly with soils, extracting organic compounds and molecules that are locked within the samples. He compares soils from different regions to understand nutrient cycling and biogeochemical processes within them. Toyoda is leading the sample preparation team for the Molecular Observation Network, which involves coordinating staff who are receiving soil cores/samples and conducting extractions and measurements.

Research Interests

  • Microbial soil activity
  • Characterization of organic carbon profiles of soil between different regions


BS in Chemistry, Washington State University, 2016

BS in Biology, Washington State University, 2016



Garayburu-Caruso V.A., J.C. Stegen, H. Song, L. Renteria, J.R. Wells, W.L. Garcia, and C.T. Resch, et al. 2020. "Carbon limitation leads to thermodynamic regulation of aerobic metabolism." Environmental Science & Technology Letters 7, no. 7:517-524. PNNL-SA-150146. doi:10.1021/acs.estlett.0c00258


Fudyma J.D., J.E. Lyon, R. Aminitabrizi, H. Gieschen, R.K. Chu, D.W. Hoyt, and J.E. Kyle, et al. 2019. "Untargeted metabolomic profiling of Sphagnum fallax reveals novel antimicrobial metabolites." Plant Direct 3, no. 11:Article No. e00179. PNNL-SA-146621. doi:10.1002/pld3.179

Ward A.S., S.M. Wondzell, N.M. Schmadel, S. Herzog, J.P. Zarnetske, V. Baranov, and P. Blaen, et al. 2019. "Spatial and temporal variation in river corridor exchange across a 5th order mountain stream network." Hydrology and Earth System Sciences 23, no. 12:5199-5225. PNNL-SA-140824. doi:10.5194/hess-23-5199-2019

Sengupta A. J.L. Indivero C.M. Gunn M.M. Tfaily R.K. Chu J.G. Toyoda and V.L. Bailey et al. 2019. Spatial gradients in the characteristics of soil-carbon fractions are associated with abiotic features but not microbial communities." Biogeosciences 16 no. 19:3911-3928. PNNL-SA-143361. doi:10.5194/bg-16-3911-2019"

Ward A.S. J.P. Zarnetske V. Baranov P. Blaen N. Brekenfeld R.K. Chu and R. Derelle et al. 2019. Co-located contemporaneous mapping of morphological hydrological chemical and biological conditions in a 5th order mountain stream network Oregon USA." Earth System Science Data 11 no. 4:1567-1581. PNNL-SA-140490. doi:10.5194/essd-11-1567-2019"


Tfaily M.M., R.K. Chu, J.G. Toyoda, N. Tolic, E.W. Robinson, L. Pasa Tolic, and N.J. Hess. 2017. "Sequential extraction protocol for organic matter from soils and sediments using high resolution mass spectrometry." Analytica Chimica Acta 972. PNNL-SA-125053. doi:10.1016/j.aca.2017.03.031

Truex M.J., B.D. Lee, C.D. Johnson, N. Qafoku, J.E. Szecsody, J.E. Kyle, and M.M. Tfaily, et al. 2017. Conceptual Model of Iodine Behavior in the Subsurface at the Hanford Site. PNNL-24709 Rev. 2. Richland, WA: Pacific Northwest National Laboratory. Conceptual Model of Iodine Behavior in the Subsurface at the Hanford Site