Search Results - "Rodgers, Ryan P."

Advances in Asphaltene Petroleomics. Part 1: Asphaltenes Are Composed of Abundant Island and Archipelago Structural Motifs by Chacón-Patiño, Martha L, Rowland, Steven M, Rodgers, Ryan P

“…For decades, discussion of asphaltene structure focused primarily on molecular weight. Now that it is widely accepted that asphaltene monomers are between ∼250…”
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Petroleomics: Chemistry of the underworld by Marshall, Alan G, Rodgers, Ryan P

“…Each different molecular elemental composition--e.g., CcHhNnOoSs--has a different exact mass. With sufficiently high mass resolving power (m/Δm₅₀% [almost…”
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21 Tesla FT-ICR Mass Spectrometer for Ultrahigh-Resolution Analysis of Complex Organic Mixtures by Smith, Donald F, Podgorski, David C, Rodgers, Ryan P, Blakney, Greg T, Hendrickson, Christopher L

“…We describe complex organic mixture analysis by 21 tesla (T) Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). Ultrahigh mass-resolving…”
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Petroleomics:  The Next Grand Challenge for Chemical Analysis by Marshall, Alan G, Rodgers, Ryan P

“…Ultrahigh-resolution Fourier transform ion cyclotron resonance mass spectrometry has recently revealed that petroleum crude oil contains heteroatom-containing…”
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Heavy Petroleum Composition. 5. Compositional and Structural Continuum of Petroleum Revealed by Podgorski, David C, Corilo, Yuri E, Nyadong, Leonard, Lobodin, Vladislav V, Bythell, Benjamin J, Robbins, Winston K, McKenna, Amy M, Marshall, Alan G, Rodgers, Ryan P

“…Twenty-five years ago, Boduszynski et al. conducted a comprehensive study of heavy oil composition and concluded that crude oil composition increases gradually…”
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Molecular-Level Characterization of Asphaltenes Isolated from Distillation Cuts by McKenna, Amy M, Chacón-Patiño, Martha L, Weisbrod, Chad R, Blakney, Gregory T, Rodgers, Ryan P

“…Asphaltenes challenge nearly all analytical techniques because of their immense polydispersity in molecular composition and structure. This operationally…”
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Identification of Vanadyl Porphyrins in a Heavy Crude Oil and Raw Asphaltene by Atmospheric Pressure Photoionization Fourier Transform Ion Cyclotron Resonance (FT-ICR) Mass Spectrometry by McKenna, Amy M, Purcell, Jeremiah M, Rodgers, Ryan P, Marshall, Alan G

“…Vanadyl porphyrins are detected and characterized by their double-bond equivalents (DBE = number of rings plus double bonds) and carbon number in an…”
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Petroleomics: advanced molecular probe for petroleum heavy ends by Hsu, Chang S., Hendrickson, Christopher L., Rodgers, Ryan P., McKenna, Amy M., Marshall, Alan G.

“…To look into complex mixtures of petroleum heavy ends at the molecular level, ultra high‐resolution mass spectrometry, i.e. resolving power > 50 000, is needed…”
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Functional Isomers in Petroleum Emulsion Interfacial Material Revealed by Ion Mobility Mass Spectrometry and Collision-Induced Dissociation by Lalli, Priscila M, Jarvis, Jacqueline M, Marshall, Alan G, Rodgers, Ryan P

“…Petroleum emulsion interfacial material (species that reside in the water/oil interface) are believed to be responsible for stabilizing emulsions in petroleum;…”
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Heavy Petroleum Composition. 1. Exhaustive Compositional Analysis of Athabasca Bitumen HVGO Distillates by Fourier Transform Ion Cyclotron Resonance Mass Spectrometry: A Definitive Test of the Boduszynski Model by McKenna, Amy M, Purcell, Jeremiah M, Rodgers, Ryan P, Marshall, Alan G

“…Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) allows detailed characterization of complex petroleum samples at the level of elemental…”
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Stepwise Structural Characterization of Asphaltenes during Deep Hydroconversion Processes Determined by Atmospheric Pressure Photoionization (APPI) Fourier Transform Ion Cyclotron Resonance (FT-ICR) Mass Spectrometry by Purcell, Jeremiah M, Merdrignac, Isabelle, Rodgers, Ryan P, Marshall, Alan G, Gauthier, Thierry, Guibard, Isabelle

“…The compositional analysis (speciation) of heavy oil products is a key step to improve our understanding of hydrotreatment processes and reaction mechanisms…”
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Atmospheric Pressure Photoionization Fourier Transform Ion Cyclotron Resonance Mass Spectrometry for Complex Mixture Analysis by Purcell, Jeremiah M, Hendrickson, Christopher L, Rodgers, Ryan P, Marshall, Alan G

“…We have coupled atmospheric pressure photoionization (APPI) to a home-built 9.4-T Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometer…”
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Unprecedented Ultrahigh Resolution FT-ICR Mass Spectrometry and Parts-Per-Billion Mass Accuracy Enable Direct Characterization of Nickel and Vanadyl Porphyrins in Petroleum from Natural Seeps by McKenna, Amy M, Williams, Jeffrey T, Putman, Jonathan C, Aeppli, Christoph, Reddy, Christopher M, Valentine, David L, Lemkau, Karin L, Kellermann, Matthias Y, Savory, Joshua J, Kaiser, Nathan K, Marshall, Alan G, Rodgers, Ryan P

“…The most abundant and problematic metal compounds in crude oil exist as organic complexes of vanadium and nickel in porphyrin structures derived from…”
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Isomeric Separation and Structural Characterization of Acids in Petroleum by Ion Mobility Mass Spectrometry by Lalli, Priscila M, Corilo, Yuri E, Rowland, Steven M, Marshall, Alan G, Rodgers, Ryan P

“…Although naphthenic acids are minor constituents in petroleum, their characterization is crucial because they are geochemically important tracers and play a…”
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Oil Spill Source Identification by Principal Component Analysis of Electrospray Ionization Fourier Transform Ion Cyclotron Resonance Mass Spectra by Corilo, Yuri E, Podgorski, David C, McKenna, Amy M, Lemkau, Karin L, Reddy, Christopher M, Marshall, Alan G, Rodgers, Ryan P

“…One fundamental challenge with either acute or chronic oil spills is to identify the source, especially in highly polluted areas, near natural oil seeps, when…”
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Two- and Three-Dimensional van Krevelen Diagrams:  A Graphical Analysis Complementary to the Kendrick Mass Plot for Sorting Elemental Compositions of Complex Organic Mixtures Based on Ultrahigh-Resolution Broadband Fourier Transform Ion Cyclotron Resonance Mass Measurements by Wu, Zhigang, Rodgers, Ryan P, Marshall, Alan G

“…Ultrahigh-resolution electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry has resolved and identified the elemental compositions…”
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Resolution of 11 000 Compositionally Distinct Components in a Single Electrospray Ionization Fourier Transform Ion Cyclotron Resonance Mass Spectrum of Crude Oil by Hughey, Christine A, Rodgers, Ryan P, Marshall, Alan G

“…Mass spectrometry is well-suited for complex mixture analysis, because unlike other types of spectroscopy, the number of mass spectral peaks per analyte is of…”
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Mass Spectral Analysis of Asphaltenes. I. Compositional Differences between Pressure-Drop and Solvent-Drop Asphaltenes Determined by Electrospray Ionization Fourier Transform Ion Cyclotron Resonance Mass Spectrometry by Klein, Geoffrey C, Kim, Sunghwan, Rodgers, Ryan P, Marshall, Alan G, Yen, Andrew, Asomaning, Sam

“…Asphaltenes are typically defined by their solubility in benzene and insolubility in pentane or heptane. They are believed to exist in petroleum crude oil as a…”
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Atmospheric Pressure Laser-Induced Acoustic Desorption Chemical Ionization Mass Spectrometry for Analysis of Saturated Hydrocarbons by Nyadong, Leonard, Quinn, John P, Hsu, Chang S, Hendrickson, Christopher L, Rodgers, Ryan P, Marshall, Alan G

“…We present atmospheric pressure laser-induced acoustic desorption chemical ionization (AP/LIAD-CI) with O2 carrier/reagent gas as a powerful new approach for…”
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Speciation of Nitrogen Containing Aromatics by Atmospheric Pressure Photoionization or Electrospray Ionization Fourier Transform Ion Cyclotron Resonance Mass Spectrometry by Purcell, Jeremiah M., Rodgers, Ryan P., Hendrickson, Christopher L., Marshall, Alan G.

“…We determine the elemental compositions of aromatic nitrogen model compounds as well as a petroleum sample by atmospheric pressure photoionization (APPI) and…”
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