Observations of VOC Emissions and Photochemical Products over US Oil- and Gas-Producing Regions Using High-Resolution H3O+ CIMS (PTR-ToF-MS)
In: Atmospheric Measurement Techniques, Jg. 10 (2017-08-16), Heft 8
Online
report
VOCs (Volatile Organic Compounds) related to oil and gas extraction operations in the United States were measured by H3O (sup plus) chemical ionization time-of-flight mass spectrometry (H3O (sup plus) ToFCIMS/PTR-ToF-MS (Time of Flight Chemical Ionization Mass Spectrometry/Proton Transfer Reaction-Time of Flight-Mass Spectroscopy) from aircraft during the Shale Oil and Natural Gas Nexus (SONGNEX) campaign in March-April 2015. This work presents an overview of major VOC species measured in nine oil- and gas-producing regions, and a more detailed analysis of H3O (sup plus) ToF-CIMS measurements in the Permian Basin within Texas and New Mexico. Mass spectra are dominated by small photochemically produced oxygenates and compounds typically found in crude oil: aromatics, cyclic alkanes, and alkanes. Mixing ratios of aromatics were frequently as high as those measured downwind of large urban areas. In the Permian, the H3O (sup plus) ToF-CIMS measured a number of underexplored or previously unreported species, including aromatic and cycloalkane oxidation products, nitrogen heterocycles including pyrrole (C4H5N) and pyrroline (C4H7N), H2S, and a diamondoid (adamantane) or unusual monoterpene. We additionally assess the specificity of a number of ion masses resulting from H3O (sup plus) ion chemistry previously reported in the literature, including several new or alternate interpretations.
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Observations of VOC Emissions and Photochemical Products over US Oil- and Gas-Producing Regions Using High-Resolution H3O+ CIMS (PTR-ToF-MS)
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Autor/in / Beteiligte Person: | Koss, Abigail ; Yuan, Bin ; Warneke, Carsten ; Gilman, Jessica B ; Lerner, Brian M ; Veres, Patrick R ; Peischl, Jeff ; Eilerman, Scott ; Wild, Rob ; Brown, Steven S ; Thompson, Chelsea R ; Ryerson, Thomas ; Hanisco, Thomas F ; Wolfe, Glenn M ; St. Clair, Jason M ; Thayer, Mitchell ; Keutsch, Frank N ; Murphy, Shane ; De Gouw, J |
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Zeitschrift: | Atmospheric Measurement Techniques, Jg. 10 (2017-08-16), Heft 8 |
Veröffentlichung: | United States: NASA Center for Aerospace Information (CASI), 2017 |
Medientyp: | report |
ISSN: | 1867-8548 (print) |
DOI: | 10.5194/amt-10-2941-2017 |
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