Collaborative Research: Predicting Current-Use Pesticides and Emerging Flame Retardants in a Changing Arctic - Fate and Phototransformation
合作研究:预测不断变化的北极中当前使用的农药和新兴阻燃剂 - 命运和光转化
基本信息
- 批准号:1804611
- 负责人:
- 金额:$ 16.04万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2019
- 资助国家:美国
- 起止时间:2019-01-01 至 2024-06-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The Arctic is experiencing rapid changes such as longer ice-free seasons. One issue that must be navigated in this changing landscape is the fate of the many synthetic organic chemicals that ultimately end up in the Arctic. Little is known about the fate of these chemicals once they reach the Artic, and any of these substances can harm organisms and people. The exposure risk of these compounds is tightly coupled to their environmental fate. This research will assess the abundance of these synthetic compounds and the ability of the Arctic environment to break down these substances. To support the education of future scientists on this emerging topic, a high school module will be delivered for the Alaska Summer Research Academy on Arctic environmental chemistry. Additionally, the research groups of Jennifer Guerard and Yu-Ping Chin will recruit a teacher for the Polar TREC (Teachers and Researchers Exploring and Collaborating) Program. If successful, this project will help direct contaminant mitigation efforts that will be required in the rapidly evolving Artic landscape. Organic chemicals from industry and agriculture have been recently detected throughout the Arctic in the tundra, air, water, organisms, and people. However, little is known about the Artic fate of current use pesticides (CUPs) or emerging brominated flame retardants (EBFRs). This collaborative work between the University of Alaska Fairbanks and the University of Delaware seeks to understand how the Arctic's unique environment influences the fate and transformation of CUPs and EBFRs. Photolysis may play a critical role in the fate of these substances due to continuous solar irradiance in summer months coupled with the presence of dissolved organic matter (DOM). These factors can catalyze contaminant attenuation through reaction with photo-derived reactive oxygen species (ROS) or other pathways. This project tests the hypotheses that: 1) Concentrations of CUPs and EBFRs in surface waters will be highest during and immediately following melt of snowpack; and 2) The formation of analyte-DOM complexes will render these substances more susceptible to photodegradation. The CUPs chlorpyrifos and chlorothalonil, and EBFRs 1,2-bis(2,4,6- tribromophenoxy)ethane and tetrabromobisphenol A, will be measured by atmospheric and aqueous sampling over two field seasons at Toolik Field Station. Partitioning to suspended solids, DOM, and phototransformation pathways influenced by Arctic DOM will be quantified through field and laboratory experiments. Critical measurements will be made of physical and biogeochemical parameters that can be incorporated into an Arctic-specific chemical fate model, including parameters for partitioning into environmental compartments and attenuation rates by photolytic pathways. A chemical fate model for CUPs and EBFRs in Arctic lakes will be developed to predict chemical behavior in Arctic waters under various physical and environmental conditions. Quantifying the persistence and transformation of these compounds will be indispensable for risk assessment and long-term policy development for Arctic region contaminants.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
北极正在经历快速变化,例如无冰季节更长。在这种不断变化的环境中必须解决的一个问题是许多最终流入北极的合成有机化学品的命运。人们对这些化学物质到达北极后的命运知之甚少,而且这些物质中的任何一种都会伤害生物体和人类。这些化合物的暴露风险与其环境命运密切相关。这项研究将评估这些合成化合物的丰度以及北极环境分解这些物质的能力。为了支持未来科学家对这一新兴主题的教育,将为阿拉斯加夏季研究学院提供有关北极环境化学的高中模块。此外,Jennifer Guerard 和 Yu-Ping Chin 的研究小组将为 Polar TREC(教师和研究人员探索与合作)项目招募一名教师。如果成功,该项目将有助于指导快速变化的北极景观所需的污染物减排工作。最近,在整个北极地区的苔原、空气、水、生物和人类中都检测到了来自工业和农业的有机化学品。然而,人们对目前使用的杀虫剂(CUP)或新兴的溴化阻燃剂(EBFR)在北极的命运知之甚少。阿拉斯加大学费尔班克斯分校和特拉华大学之间的这项合作旨在了解北极独特的环境如何影响 CUP 和 EBFR 的命运和转变。由于夏季持续的太阳辐照以及溶解有机物 (DOM) 的存在,光解作用可能在这些物质的命运中发挥关键作用。 这些因素可以通过与光衍生活性氧 (ROS) 或其他途径发生反应来催化污染物衰减。该项目测试了以下假设: 1) 地表水中的 CUP 和 EBFR 浓度在积雪融化期间和融化后立即达到最高; 2) 分析物-DOM 复合物的形成将使这些物质更容易发生光降解。 CUP 毒死蜱和百菌清,以及 EBFR 1,2-双(2,4,6-三溴苯氧基)乙烷和四溴双酚 A 将在 Toolik 野外站的两个野外季节通过大气和水样进行测量。悬浮固体、DOM 的分配以及受北极 DOM 影响的光转化途径将通过现场和实验室实验进行量化。关键测量将对物理和生物地球化学参数进行,这些参数可以纳入北极特定的化学归宿模型中,包括划分环境分区的参数和光解途径的衰减率。将开发北极湖泊中 CUP 和 EBFR 的化学归宿模型,以预测各种物理和环境条件下北极水域的化学行为。量化这些化合物的持久性和转化对于北极地区污染物的风险评估和长期政策制定是不可或缺的。该奖项反映了 NSF 的法定使命,并通过使用基金会的智力价值和更广泛的影响审查标准进行评估,被认为值得支持。
项目成果
期刊论文数量(3)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Identification of next-generation International Humic Substances Society reference materials for advancing the understanding of the role of natural organic matter in the Anthropocene
- DOI:10.1007/s00027-022-00923-x
- 发表时间:2023-01
- 期刊:
- 影响因子:2.4
- 作者:Y. Chin;D. McKnight;J. D’Andrilli;Nicole Brooks;K. Cawley;J. Guerard;E. Perdue;C. Stedmon;Paul G Tratnyek;P. Westerhoff;A. Wozniak;P. Bloom;C. Foreman;R. Gabor;Jumanah Hamdi;Blair Hanson;R. Hozalski;A. Kellerman;G. McKay;Victoria Silverman;R. Spencer;C. Ward;Danhui Xin;F. Rosario‐Ortiz;Christina K. Remucal;D. Reckhow
- 通讯作者:Y. Chin;D. McKnight;J. D’Andrilli;Nicole Brooks;K. Cawley;J. Guerard;E. Perdue;C. Stedmon;Paul G Tratnyek;P. Westerhoff;A. Wozniak;P. Bloom;C. Foreman;R. Gabor;Jumanah Hamdi;Blair Hanson;R. Hozalski;A. Kellerman;G. McKay;Victoria Silverman;R. Spencer;C. Ward;Danhui Xin;F. Rosario‐Ortiz;Christina K. Remucal;D. Reckhow
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Yu-Ping Chin其他文献
Advances in aquatic photochemistry: A special feature to honor the career of Dr. Barbara Sulzberger
- DOI:
10.1007/s00027-009-0020-7 - 发表时间:
2009-05-18 - 期刊:
- 影响因子:1.800
- 作者:
Yu-Ping Chin;Bettina Voelker - 通讯作者:
Bettina Voelker
Sonochemical reactions of dissolved organic matter
- DOI:
10.1163/1568567041856954 - 发表时间:
2004-09-01 - 期刊:
- 影响因子:3.500
- 作者:
Dong Chen;Ziqi He;Linda K. Weavers;Yu-Ping Chin;Harold W. Walker;Patrick G. Hatcher - 通讯作者:
Patrick G. Hatcher
Yu-Ping Chin的其他文献
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{{ truncateString('Yu-Ping Chin', 18)}}的其他基金
Collaborative Research: New Roles for Reactive Oxygen Species in Mediating Carbon Fluxes at the Terrestrial-Aquatic Interface
合作研究:活性氧在调节陆地-水生界面碳通量中的新作用
- 批准号:
2029665 - 财政年份:2021
- 资助金额:
$ 16.04万 - 项目类别:
Standard Grant
Atmospheric Inputs and the Photochemical Transformation of Brominated Flame Retardants in Arctic Surface Waters
大气输入和北极地表水中溴化阻燃剂的光化学转化
- 批准号:
1203861 - 财政年份:2013
- 资助金额:
$ 16.04万 - 项目类别:
Standard Grant
Collaborative Research: Role of Organic Matter Source on the Photochemical Fate of Pharmaceutical Compounds
合作研究:有机物质源对药物化合物光化学命运的作用
- 批准号:
1133094 - 财政年份:2011
- 资助金额:
$ 16.04万 - 项目类别:
Standard Grant
Collaborative Research: The Role of Plants in the Environmental Fate of Growth Promoters and Antibiotics Used in Concentrated Animal Feed Operations
合作研究:植物在浓缩动物饲料操作中使用的生长促进剂和抗生素的环境归趋中的作用
- 批准号:
0965863 - 财政年份:2010
- 资助金额:
$ 16.04万 - 项目类别:
Standard Grant
Collaborative Research: The Biogeochemical Evolution of Dissolved Organic Matter in a Fluvial System on the Cotton Glacier, Antarctica
合作研究:南极洲科顿冰川河流系统中溶解有机物的生物地球化学演化
- 批准号:
0838949 - 财政年份:2009
- 资助金额:
$ 16.04万 - 项目类别:
Standard Grant
Collaborative Research: Redox Processes in the Sedimentary Porewaters of Prairie Pothole Lakes: Implications for the Attenuation of Pesticides
合作研究:草原坑洼湖沉积孔隙水中的氧化还原过程:对农药减毒的影响
- 批准号:
0911296 - 财政年份:2009
- 资助金额:
$ 16.04万 - 项目类别:
Standard Grant
Optimizing the Design of Constructed Wetlands for the Photodegradation of Organic Contaminants
优化人工湿地光降解有机污染物的设计
- 批准号:
0504434 - 财政年份:2005
- 资助金额:
$ 16.04万 - 项目类别:
Continuing Grant
Collaborative Research: Probing the Reductive Potential of Wetland Sediments and Pore Waters
合作研究:探索湿地沉积物和孔隙水的还原潜力
- 批准号:
0337434 - 财政年份:2004
- 资助金额:
$ 16.04万 - 项目类别:
Continuing Grant
Collaborative Research: Biogeochemistry of Dissolved Organic Matter in Pony Lake, Ross Island.
合作研究:罗斯岛小马湖溶解有机物的生物地球化学。
- 批准号:
0338260 - 财政年份:2004
- 资助金额:
$ 16.04万 - 项目类别:
Standard Grant
Collaborative Research: The Direct and Indirect Photolytic Fate of Persistent Organic Pollutants in Arctic Surface Waters
合作研究:北极地表水中持久性有机污染物的直接和间接光解归宿
- 批准号:
0097142 - 财政年份:2001
- 资助金额:
$ 16.04万 - 项目类别:
Standard Grant
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