Matches in SemOpenAlex for { <https://semopenalex.org/work/W2596224710> ?p ?o ?g. }
Showing items 1 to 89 of
89
with 100 items per page.
- W2596224710 abstract "Author(s): Gentner, Drew Roland | Advisor(s): Goldstein, Allen H | Abstract: The troposphere is comprised of a complex mixture of molecules with trace amounts of over 10,000 organic compounds in the gas and particle phase. These compounds play important roles in the chemistry of the troposphere and the formation of detrimental secondary air pollution that impacts human health, climate, and the environment. This dissertation describes the development of novel ambient measurement techniques and statistical modeling methods, and their use to provide in-depth characterization of emissions from several prominent anthropogenic and biogenic sources. These results are used to assess the potential of the studied sources to form secondary organic aerosol (SOA) and tropospheric ozone. The objectives of this dissertation are accomplished using data from 6 measurement campaigns in the state of California, which includes some of the worst regions for air quality in the United States.An automated in situ instrument with a gas chromatograph coupled to a mass spectrometer and a flame ionization detector was modified to measure a broad range of gas-phase organic compounds. This included a mixture of traditionally measured chemical species and numerous compounds for which no previous in situ measurements exist and have otherwise been relatively unstudied. Many of these compounds were in the intermediate-volatility range (i.e. IVOCs), which have previously been hypothesized to have a considerable effect on the formation of SOA. The rest of the compounds measured were in the volatile organic compound (VOC) range, but many of the least volatile compounds in this range had not been sufficiently studied, such as C10 aromatic hydrocarbons from motor vehicles.Source receptor modeling techniques with chemical mass balancing were developed in several forms and used in this dissertation to assess emissions of gasoline exhaust, non-tailpipe gasoline, diesel exhaust, and unrefined petroleum gas emissions from petroleum operations. A statistical analysis using meteorological data (Flexpart) and ambient ground site measurements was developed to examine the spatial distribution of emissions in a region and is used in this dissertation to examine emissions from several point and area sources. Techniques are also developed to estimate bulk SOA yields of the complex mixtures in gasoline and diesel emissions.A comparison of gas-phase organic carbon emissions from gasoline and diesel vehicles concludes that diesel emissions form 15 times more SOA than gasoline exhaust per liter of fuel burned, but given the extensive use of gasoline and varied fuel use depending on region, diesel is responsible for 65-90% of vehicular SOA. The non-tailpipe gasoline and unrefined petroleum gas sources examined in this dissertation are significant in abundance, but are comprised largely of relatively small hydrocarbons and thus form negligible amounts of SOA. Biogenic emissions of terpenoid and benzenoid compounds were measured in this work and are highly reactive. In regions with extensive agricultural operations, such as California's San Joaquin Valley, summertime emissions of biogenic compounds have the potential to form a similar amount of SOA and ozone as motor vehicle emissions. Additionally, seasonal emission events, such as flowering, produce an order of magnitude increase in emissions of ozone and SOA precursors. In all, the advancements in source characterization and secondary pollution formation potential in this dissertation provide important insights for future studies, models, and air pollution control policies." @default.
- W2596224710 created "2017-03-23" @default.
- W2596224710 creator A5029691962 @default.
- W2596224710 date "2012-01-01" @default.
- W2596224710 modified "2023-09-27" @default.
- W2596224710 title "Gas-Phase Organic Carbon and Tropospheric Pollution: Sources, Emissions, and Implications for Air Quality" @default.
- W2596224710 hasPublicationYear "2012" @default.
- W2596224710 type Work @default.
- W2596224710 sameAs 2596224710 @default.
- W2596224710 citedByCount "0" @default.
- W2596224710 crossrefType "journal-article" @default.
- W2596224710 hasAuthorship W2596224710A5029691962 @default.
- W2596224710 hasConcept C106159729 @default.
- W2596224710 hasConcept C107872376 @default.
- W2596224710 hasConcept C121332964 @default.
- W2596224710 hasConcept C126314574 @default.
- W2596224710 hasConcept C127313418 @default.
- W2596224710 hasConcept C130047971 @default.
- W2596224710 hasConcept C153294291 @default.
- W2596224710 hasConcept C15920480 @default.
- W2596224710 hasConcept C162324750 @default.
- W2596224710 hasConcept C178790620 @default.
- W2596224710 hasConcept C185592680 @default.
- W2596224710 hasConcept C18903297 @default.
- W2596224710 hasConcept C2776349674 @default.
- W2596224710 hasConcept C2778150766 @default.
- W2596224710 hasConcept C2779345167 @default.
- W2596224710 hasConcept C2780959689 @default.
- W2596224710 hasConcept C39432304 @default.
- W2596224710 hasConcept C508106653 @default.
- W2596224710 hasConcept C521259446 @default.
- W2596224710 hasConcept C521977710 @default.
- W2596224710 hasConcept C559116025 @default.
- W2596224710 hasConcept C86803240 @default.
- W2596224710 hasConcept C9075549 @default.
- W2596224710 hasConcept C91586092 @default.
- W2596224710 hasConcept C91602232 @default.
- W2596224710 hasConceptScore W2596224710C106159729 @default.
- W2596224710 hasConceptScore W2596224710C107872376 @default.
- W2596224710 hasConceptScore W2596224710C121332964 @default.
- W2596224710 hasConceptScore W2596224710C126314574 @default.
- W2596224710 hasConceptScore W2596224710C127313418 @default.
- W2596224710 hasConceptScore W2596224710C130047971 @default.
- W2596224710 hasConceptScore W2596224710C153294291 @default.
- W2596224710 hasConceptScore W2596224710C15920480 @default.
- W2596224710 hasConceptScore W2596224710C162324750 @default.
- W2596224710 hasConceptScore W2596224710C178790620 @default.
- W2596224710 hasConceptScore W2596224710C185592680 @default.
- W2596224710 hasConceptScore W2596224710C18903297 @default.
- W2596224710 hasConceptScore W2596224710C2776349674 @default.
- W2596224710 hasConceptScore W2596224710C2778150766 @default.
- W2596224710 hasConceptScore W2596224710C2779345167 @default.
- W2596224710 hasConceptScore W2596224710C2780959689 @default.
- W2596224710 hasConceptScore W2596224710C39432304 @default.
- W2596224710 hasConceptScore W2596224710C508106653 @default.
- W2596224710 hasConceptScore W2596224710C521259446 @default.
- W2596224710 hasConceptScore W2596224710C521977710 @default.
- W2596224710 hasConceptScore W2596224710C559116025 @default.
- W2596224710 hasConceptScore W2596224710C86803240 @default.
- W2596224710 hasConceptScore W2596224710C9075549 @default.
- W2596224710 hasConceptScore W2596224710C91586092 @default.
- W2596224710 hasConceptScore W2596224710C91602232 @default.
- W2596224710 hasLocation W25962247101 @default.
- W2596224710 hasOpenAccess W2596224710 @default.
- W2596224710 hasPrimaryLocation W25962247101 @default.
- W2596224710 hasRelatedWork W1594875364 @default.
- W2596224710 hasRelatedWork W1970876233 @default.
- W2596224710 hasRelatedWork W1979855014 @default.
- W2596224710 hasRelatedWork W2011533888 @default.
- W2596224710 hasRelatedWork W2030765838 @default.
- W2596224710 hasRelatedWork W2093614967 @default.
- W2596224710 hasRelatedWork W2200428635 @default.
- W2596224710 hasRelatedWork W2201596934 @default.
- W2596224710 hasRelatedWork W2342617532 @default.
- W2596224710 hasRelatedWork W2345102761 @default.
- W2596224710 hasRelatedWork W2382809476 @default.
- W2596224710 hasRelatedWork W2410888226 @default.
- W2596224710 hasRelatedWork W2417429149 @default.
- W2596224710 hasRelatedWork W2906321800 @default.
- W2596224710 hasRelatedWork W3000346417 @default.
- W2596224710 hasRelatedWork W3087997365 @default.
- W2596224710 hasRelatedWork W3088986288 @default.
- W2596224710 hasRelatedWork W3154000056 @default.
- W2596224710 hasRelatedWork W3162185432 @default.
- W2596224710 hasRelatedWork W90432426 @default.
- W2596224710 isParatext "false" @default.
- W2596224710 isRetracted "false" @default.
- W2596224710 magId "2596224710" @default.
- W2596224710 workType "article" @default.