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Transport and Phase-State of Organic Chemical Compounds in Indoor and Outdoor Environments
Transport and Phase-State of Organic Chemical Compounds in Indoor and Outdoor Environments
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202103120
- ISBN
- 9798314898963
- DDC
- 551.5
- 서명/저자
- Transport and Phase-State of Organic Chemical Compounds in Indoor and Outdoor Environments
- 발행사항
- [Sl] : University of Colorado at Boulder, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 163 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-11, Section: B.
- 주기사항
- Advisor: de Gouw, Joost;Jimenez, Jose.
- 학위논문주기
- Thesis (Ph.D.)--University of Colorado at Boulder, 2025.
- 초록/해제
- 요약Air quality (AQ) plays an important role in health and climate outcomes. The World Health Organization (WHO) estimates that 99% of humans live in areas where AQ exceeds healthy limits. The effects of poor indoor and outdoor AQ are associated with seven million annual premature deaths. This thesis presents three studies which aim to increase our understanding of AQ through studies of the chemistry, chemical transport, and phase-state in indoor and outdoor environments.In the first project, a laboratory study of VOC oxidation was used to assess the functionality of four common vapor pressure estimation methods. These methods, EVAPORATION, SIMPOL, SPARC, and Nannoolal, were assessed for their impact on secondary organic aerosol yields modeled in two chemical systems: C8-C14 1-alkenes and C9- C15 2-methyl-1-alkenes reactions with OH radicals in the presence of NOx. The modeled results indicated poor to moderate model-measurement agreement for all methods and indicated decreasing model efficacy with increasing chemical functionality.The second project studied the development of indoor surface films in a lecture hall at the University of Colorado, Boulder. The goal of the study was to assess how several sources contribute to these films. Diurnal samples were collected over one week and results indicated that films developed more quickly during the day than at night but that contributions to the horizontal films from four sources were roughly the same: ~60% insoluble particles (IP), ~2% organic particles from the supply air (OPSup), ~8% condensed SVOC (COC), and ~30% organic particles with indoor sources (OPRoom).In the third project, the surface film and aerosol samples collected from the second project were analyzed with High Performance Liquid Chromatography coupled to an Iodide Chemical Ionization Mass Spectrometer with a Vaporization Inlet for Aerosols (HPLC-VIA-CIMS). The data were used for mass balancing of the organic categories only, the results of which were in good agreement with the results determined in the second project: ~8% OPSup, ~15% COC, and ~77% OPRoom. Eight potential chemical formulas were also identified from the high-resolution MS data and tracked across all samples to illustrate their transport and contribution to the films. The results exemplify the complex chemical make-up of these rapidly developing films and the importance of continued research to fully understand their contribution to indoor environments.
- 일반주제명
- Atmospheric chemistry
- 일반주제명
- Chemistry
- 일반주제명
- Environmental science
- 키워드
- Surface films
- 키워드
- Vapor pressure
- 키워드
- Indoor sources
- 기타저자
- University of Colorado at Boulder Chemistry
- 기본자료저록
- Dissertations Abstracts International. 86-11B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
008260126s2025 us c eng d■001000017357034
■00520260202103120
■006m o d
■007cr#unu||||||||
■020 ▼a9798314898963
■035 ▼a(MiAaPQ)AAI31937859
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a551.5
■1001 ▼aLongnecker, Emmaline R.▼0(orcid)0000-0001-6104-4224
■24510▼aTransport and Phase-State of Organic Chemical Compounds in Indoor and Outdoor Environments
■260 ▼a[Sl]▼bUniversity of Colorado at Boulder▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a163 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-11, Section: B.
■500 ▼aAdvisor: de Gouw, Joost;Jimenez, Jose.
■5021 ▼aThesis (Ph.D.)--University of Colorado at Boulder, 2025.
■520 ▼aAir quality (AQ) plays an important role in health and climate outcomes. The World Health Organization (WHO) estimates that 99% of humans live in areas where AQ exceeds healthy limits. The effects of poor indoor and outdoor AQ are associated with seven million annual premature deaths. This thesis presents three studies which aim to increase our understanding of AQ through studies of the chemistry, chemical transport, and phase-state in indoor and outdoor environments.In the first project, a laboratory study of VOC oxidation was used to assess the functionality of four common vapor pressure estimation methods. These methods, EVAPORATION, SIMPOL, SPARC, and Nannoolal, were assessed for their impact on secondary organic aerosol yields modeled in two chemical systems: C8-C14 1-alkenes and C9- C15 2-methyl-1-alkenes reactions with OH radicals in the presence of NOx. The modeled results indicated poor to moderate model-measurement agreement for all methods and indicated decreasing model efficacy with increasing chemical functionality.The second project studied the development of indoor surface films in a lecture hall at the University of Colorado, Boulder. The goal of the study was to assess how several sources contribute to these films. Diurnal samples were collected over one week and results indicated that films developed more quickly during the day than at night but that contributions to the horizontal films from four sources were roughly the same: ~60% insoluble particles (IP), ~2% organic particles from the supply air (OPSup), ~8% condensed SVOC (COC), and ~30% organic particles with indoor sources (OPRoom).In the third project, the surface film and aerosol samples collected from the second project were analyzed with High Performance Liquid Chromatography coupled to an Iodide Chemical Ionization Mass Spectrometer with a Vaporization Inlet for Aerosols (HPLC-VIA-CIMS). The data were used for mass balancing of the organic categories only, the results of which were in good agreement with the results determined in the second project: ~8% OPSup, ~15% COC, and ~77% OPRoom. Eight potential chemical formulas were also identified from the high-resolution MS data and tracked across all samples to illustrate their transport and contribution to the films. The results exemplify the complex chemical make-up of these rapidly developing films and the importance of continued research to fully understand their contribution to indoor environments.
■590 ▼aSchool code: 0051.
■650 4▼aAtmospheric chemistry
■650 4▼aChemistry
■650 4▼aEnvironmental science
■653 ▼aIndoor air quality
■653 ▼aSurface films
■653 ▼aVapor pressure
■653 ▼aWorld Health Organization
■653 ▼aIndoor sources
■653 ▼aInsoluble particles
■690 ▼a0371
■690 ▼a0768
■690 ▼a0485
■71020▼aUniversity of Colorado at Boulder▼bChemistry.
■7730 ▼tDissertations Abstracts International▼g86-11B.
■790 ▼a0051
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17357034▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
