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From Wiscosin Wells to Megacity Skies: Advancing Environmental Chemistry Approaches to Monitoring Arsenic and Heavy Metal(loid) Contaminants
From Wiscosin Wells to Megacity Skies: Advancing Environmental Chemistry Approaches to Monitoring Arsenic and Heavy Metal(loid) Contaminants
Detailed Information
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202104826
- ISBN
- 9798290916743
- DDC
- 540
- 서명/저자
- From Wiscosin Wells to Megacity Skies: Advancing Environmental Chemistry Approaches to Monitoring Arsenic and Heavy Metal(loid) Contaminants
- 발행사항
- [Sl] : The University of Wisconsin - Madison, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 158 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-02, Section: B.
- 주기사항
- Advisor: Ginder-Vogel, Matthew.
- 학위논문주기
- Thesis (Ph.D.)--The University of Wisconsin - Madison, 2025.
- 초록/해제
- 요약Heavy metal(loid) exposure remains a persistent environmental health concern due to the toxicity and environmental persistence of elements like arsenic, cadmium, and lead. These elements can accumulate in air, water, and soil through both natural biogeochemical cycling and anthropogenic activities (e.g., aquifer over-pumping, mining, fuel combustion, and industrial manufacturing. Understanding heavy metal(loid) behavior and monitoring their movement across exposure pathways requires sensitive, affordable analytical techniques. This dissertation evaluates an emerging low-cost, highly sensitive spectroscopic tool for monitoring aqueous arsenic (As) and applies a well-established, yet resource-intensive spectrometric tool for heavy metal(loid) detection in atmospheric particulate matter. Despite increasing awareness of As contamination, reliable and cost-effective methods for detecting As in drinking water remain limited. In addition to water contamination, airborne metal(loid)s-including As-also contribute to atmospheric pollution and are under-characterized in many areas worldwide. To address these gaps, the inorganic As speciation and detection capabilities of gold nanoparticle-based surface-enhanced Raman spectroscopy (SERS) are investigated and applied to freshwater samples. Spectral fingerprints of As change with pH, with optimal signal intensities observed near pH 8 in ultra-pure water. In natural water samples, arsenite was detectable down to 10 ppb, while arsenate was measured only as low as 1 ppm. These findings highlight the technique's promising ability to efficiently and inexpensively measure arsenite in complex matrices, and they contribute to the development of more accessible water quality monitoring strategies. Beyond aqueous contexts, inductively-coupled plasma mass spectrometry was used to investigate spatial-seasonal trends of particulate matter bound heavy metal(loid)s, including As, in Dhaka, Bangladesh. Dhaka is a rapidly urbanizing megacity affected by both atmospheric and drinking water As contamination. This analysis revealed patterns in airborne metal(loid)s across eight locations during the monsoon and post-monsoon seasons, providing insight into pollution sources and potential inhalation-related health risks. Altogether, this dissertation contributes to the advancement of contaminant monitoring techniques, emphasizing approaches that are not only sensitive and accurate but also affordable. By broadening avenues of environmental As detection and increasing understanding of regional heavy metal(loid) compositions, this work supports the expansion of efforts to safeguard public health and inform evidence-based environmental policy.
- 일반주제명
- Chemistry
- 일반주제명
- Environmental science
- 일반주제명
- Environmental health
- 일반주제명
- Analytical chemistry
- 키워드
- Arsenic
- 키워드
- Heavy metals
- 기타저자
- The University of Wisconsin - Madison Environmental Chemistry and Technology
- 기본자료저록
- Dissertations Abstracts International. 87-02B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798290916743
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■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a540
■1001 ▼aThomas, AnnaBeth.
■24510▼aFrom Wiscosin Wells to Megacity Skies: Advancing Environmental Chemistry Approaches to Monitoring Arsenic and Heavy Metal(loid) Contaminants
■260 ▼a[Sl]▼bThe University of Wisconsin - Madison▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a158 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-02, Section: B.
■500 ▼aAdvisor: Ginder-Vogel, Matthew.
■5021 ▼aThesis (Ph.D.)--The University of Wisconsin - Madison, 2025.
■520 ▼aHeavy metal(loid) exposure remains a persistent environmental health concern due to the toxicity and environmental persistence of elements like arsenic, cadmium, and lead. These elements can accumulate in air, water, and soil through both natural biogeochemical cycling and anthropogenic activities (e.g., aquifer over-pumping, mining, fuel combustion, and industrial manufacturing. Understanding heavy metal(loid) behavior and monitoring their movement across exposure pathways requires sensitive, affordable analytical techniques. This dissertation evaluates an emerging low-cost, highly sensitive spectroscopic tool for monitoring aqueous arsenic (As) and applies a well-established, yet resource-intensive spectrometric tool for heavy metal(loid) detection in atmospheric particulate matter. Despite increasing awareness of As contamination, reliable and cost-effective methods for detecting As in drinking water remain limited. In addition to water contamination, airborne metal(loid)s-including As-also contribute to atmospheric pollution and are under-characterized in many areas worldwide. To address these gaps, the inorganic As speciation and detection capabilities of gold nanoparticle-based surface-enhanced Raman spectroscopy (SERS) are investigated and applied to freshwater samples. Spectral fingerprints of As change with pH, with optimal signal intensities observed near pH 8 in ultra-pure water. In natural water samples, arsenite was detectable down to 10 ppb, while arsenate was measured only as low as 1 ppm. These findings highlight the technique's promising ability to efficiently and inexpensively measure arsenite in complex matrices, and they contribute to the development of more accessible water quality monitoring strategies. Beyond aqueous contexts, inductively-coupled plasma mass spectrometry was used to investigate spatial-seasonal trends of particulate matter bound heavy metal(loid)s, including As, in Dhaka, Bangladesh. Dhaka is a rapidly urbanizing megacity affected by both atmospheric and drinking water As contamination. This analysis revealed patterns in airborne metal(loid)s across eight locations during the monsoon and post-monsoon seasons, providing insight into pollution sources and potential inhalation-related health risks. Altogether, this dissertation contributes to the advancement of contaminant monitoring techniques, emphasizing approaches that are not only sensitive and accurate but also affordable. By broadening avenues of environmental As detection and increasing understanding of regional heavy metal(loid) compositions, this work supports the expansion of efforts to safeguard public health and inform evidence-based environmental policy.
■590 ▼aSchool code: 0262.
■650 4▼aChemistry
■650 4▼aEnvironmental science
■650 4▼aEnvironmental engineering
■650 4▼aEnvironmental health
■650 4▼aAnalytical chemistry
■653 ▼aArsenic
■653 ▼aEnvironmental chemistry
■653 ▼aEnvironmental contaminant detection
■653 ▼aHeavy metals
■653 ▼aInductively-coupled plasma mass spectrometry
■653 ▼aSurface-enhanced Raman spectroscopy
■690 ▼a0485
■690 ▼a0768
■690 ▼a0775
■690 ▼a0486
■690 ▼a0470
■71020▼aThe University of Wisconsin - Madison▼bEnvironmental Chemistry and Technology.
■7730 ▼tDissertations Abstracts International▼g87-02B.
■790 ▼a0262
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17359043▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
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