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The Impacts of Wildfire Activity in the Wildland-Urban Interface on Environmental Mobilization and Bioaccessibility of Nanoscale Trace Metals
The Impacts of Wildfire Activity in the Wildland-Urban Interface on Environmental Mobilization and Bioaccessibility of Nanoscale Trace Metals
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202103133
- ISBN
- 9798263305543
- DDC
- 551
- 서명/저자
- The Impacts of Wildfire Activity in the Wildland-Urban Interface on Environmental Mobilization and Bioaccessibility of Nanoscale Trace Metals
- 발행사항
- [Sl] : Colorado School of Mines, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 190 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
- 주기사항
- Advisor: Ranville, James;Spear, John.
- 학위논문주기
- Thesis (Ph.D.)--Colorado School of Mines, 2025.
- 초록/해제
- 요약Global wildfire activity is increasing in frequency and severity, driven by anthropogenic climate change.Wildfires at the Wildland-Urban Interface (WUI), regions where structures are intermixed with vegetative fuel sources, are becoming increasingly common, impacting thousands of people worldwide. The biological and environmental health risks of forest wildfires are well documented, including mobilization of respirable particulate matter, water contamination, and trace metal enrichment. However, less is known about the biogeochemical impacts of WUI wildfires. Given that structures are concentrated sources of metals (wiring, paints, treated wood, electronics, etc.), there is a growing need to characterize ash generated from structure fires. This thesis investigates the environmental liability and pulmonary bioaccessibility of ash from structures burned in the Marshall Fire, a WUI wildfire that burned over 1000 structures in Boulder Country, Colorado.Exposure to WUI ash impacts a range of people, including first responders and residents. In the first part of this work, the bulk environmental liability and respiratory bioaccessibility of toxic trace metals in structure ash were quantified using a water leach and a Simulated Epithelial Lung Fluid (SELF) leach as inhalation is a major vector for metal exposure. Ash samples were compared to soils, another exposure vector in urban areas. Metal concentrations and leachability were highly variable. Bioaccessibilities up to 15% were reported for ash-derived Ni, with elevated Cr, and Cu bioaccessabilities in ash compared to soils. single particle Inductively Coupled Plasma Mass Spectrometry was used to quantify nanoparticles (NPs, 100 nm) in ash, driven by concerns of NPs' small size enabling crossing of biological membranes and organ translocation. Changes to ash derived NP populations in SELF were reported for the first time, providing insight into the impact of the pulmonary environment on metal uptake. Further, I characterized wildfire generated nanoparticles from Tire Crumb Rubber (TCR), an end-of-life tire product frequently used in children's playgrounds. Increases in number and size of NPs were associated with burning TCR, including a unique enrichment of Cr in metal NPs. Together, this work presents for the first time a quantification of nanoparticulate trace metal content in ash from structure fires.
- 일반주제명
- Geochemistry
- 일반주제명
- Nanotechnology
- 일반주제명
- Toxicology
- 일반주제명
- Environmental science
- 일반주제명
- Analytical chemistry
- 키워드
- Spectrometry
- 키워드
- Single particle
- 키워드
- Wildfire
- 기타저자
- Colorado School of Mines Chemistry
- 기본자료저록
- Dissertations Abstracts International. 87-05B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■040 ▼aMiAaPQ▼cMiAaPQ
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■1001 ▼aVillarruel, Carmen M.
■24510▼aThe Impacts of Wildfire Activity in the Wildland-Urban Interface on Environmental Mobilization and Bioaccessibility of Nanoscale Trace Metals
■260 ▼a[Sl]▼bColorado School of Mines▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a190 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-05, Section: B.
■500 ▼aAdvisor: Ranville, James;Spear, John.
■5021 ▼aThesis (Ph.D.)--Colorado School of Mines, 2025.
■520 ▼aGlobal wildfire activity is increasing in frequency and severity, driven by anthropogenic climate change.Wildfires at the Wildland-Urban Interface (WUI), regions where structures are intermixed with vegetative fuel sources, are becoming increasingly common, impacting thousands of people worldwide. The biological and environmental health risks of forest wildfires are well documented, including mobilization of respirable particulate matter, water contamination, and trace metal enrichment. However, less is known about the biogeochemical impacts of WUI wildfires. Given that structures are concentrated sources of metals (wiring, paints, treated wood, electronics, etc.), there is a growing need to characterize ash generated from structure fires. This thesis investigates the environmental liability and pulmonary bioaccessibility of ash from structures burned in the Marshall Fire, a WUI wildfire that burned over 1000 structures in Boulder Country, Colorado.Exposure to WUI ash impacts a range of people, including first responders and residents. In the first part of this work, the bulk environmental liability and respiratory bioaccessibility of toxic trace metals in structure ash were quantified using a water leach and a Simulated Epithelial Lung Fluid (SELF) leach as inhalation is a major vector for metal exposure. Ash samples were compared to soils, another exposure vector in urban areas. Metal concentrations and leachability were highly variable. Bioaccessibilities up to 15% were reported for ash-derived Ni, with elevated Cr, and Cu bioaccessabilities in ash compared to soils. single particle Inductively Coupled Plasma Mass Spectrometry was used to quantify nanoparticles (NPs, 100 nm) in ash, driven by concerns of NPs' small size enabling crossing of biological membranes and organ translocation. Changes to ash derived NP populations in SELF were reported for the first time, providing insight into the impact of the pulmonary environment on metal uptake. Further, I characterized wildfire generated nanoparticles from Tire Crumb Rubber (TCR), an end-of-life tire product frequently used in children's playgrounds. Increases in number and size of NPs were associated with burning TCR, including a unique enrichment of Cr in metal NPs. Together, this work presents for the first time a quantification of nanoparticulate trace metal content in ash from structure fires.
■590 ▼aSchool code: 0052.
■650 4▼aGeochemistry
■650 4▼aNanotechnology
■650 4▼aToxicology
■650 4▼aEnvironmental science
■650 4▼aAnalytical chemistry
■653 ▼aSpectrometry
■653 ▼aSimulated lung fluid
■653 ▼aSingle particle
■653 ▼aWildfire
■653 ▼aWildland-Urban Interface
■690 ▼a0996
■690 ▼a0486
■690 ▼a0652
■690 ▼a0768
■690 ▼a0383
■71020▼aColorado School of Mines▼bChemistry.
■7730 ▼tDissertations Abstracts International▼g87-05B.
■790 ▼a0052
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17357113▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
