Environmental Photochemistry at the Air-Ice Interface
空气-冰界面的环境光化学
基本信息
- 批准号:1806210
- 负责人:
- 金额:$ 60万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2018
- 资助国家:美国
- 起止时间:2018-06-15 至 2023-05-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Professors Cort Anastasio and Davide Donadio of the University of California at Davis are funded by the Environmental Chemical Sciences Program in the Division of Chemistry to study chemical reactions that take place on the surfaces of ice and snow. Snow contains a variety of chemical contaminants, some of which are toxic. It was originally thought that contaminants in deposited snow are preserved, bit recent work shows that these chemicals can be degraded by sunlight. These photochemical reactions can remove toxic contaminants from the snow. However, they can also make toxic products, some of which are released to the air. Unfortunately, understanding of these processes is limited, in part because there are few studies. But there is also a discrepancy in the existing studies: some report that sunlight reactions are faster in snow than in water, while other studies find no difference.In this project, an understanding about how conditions (e.g., snow, ice) impact photochemistry are being investigated. As well, an understanding about the mechanisms responsible for making snow photochemistry faster are being considered. These goals are being pursued with a combination of laboratory experiments and modeling of chemical contaminants on snow. This project includes outreach to the public, highlighting the impact of chemistry on everyday life. It also includes activities at K-12 schools, and the training of undergraduate and graduate students.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.
加州大学戴维斯分校的Cort Anastasio和Davide Donadio教授由化学系环境化学科学项目资助,研究冰雪表面发生的化学反应。雪含有多种化学污染物,其中一些是有毒的。 人们最初认为沉积的雪中的污染物被保存下来,但最近的研究表明,这些化学物质可以被阳光降解。 这些光化学反应可以去除雪中的有毒污染物。 然而,它们也可以制造有毒产品,其中一些被释放到空气中。 不幸的是,对这些过程的理解是有限的,部分原因是研究很少。 但现有的研究也存在差异:一些研究报告说,阳光在雪中的反应比在水中更快,而其他研究发现没有差异。雪、冰)撞击光化学。 此外,正在考虑了解使雪光化学反应更快的机制。 这些目标正在通过实验室实验和雪上化学污染物的建模相结合来实现。 该项目包括向公众宣传,突出化学对日常生活的影响。该奖项反映了NSF的法定使命,并通过使用基金会的知识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(7)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Effect of sodium chloride adsorption on the surface premelting of ice
氯化钠吸附对冰表面预熔的影响
- DOI:10.1039/d2cp02277j
- 发表时间:2022
- 期刊:
- 影响因子:3.3
- 作者:Berrens, Margaret L.;Bononi, Fernanda C.;Donadio, Davide
- 通讯作者:Donadio, Davide
Structure and Dynamics of the Quasi-Liquid Layer at the Surface of Ice from Molecular Simulations
- DOI:10.1021/acs.jpcc.8b07724
- 发表时间:2018-11-01
- 期刊:
- 影响因子:3.7
- 作者:Kling, Tanja;Kling, Felix;Donadio, Davide
- 通讯作者:Donadio, Davide
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Cort Anastasio其他文献
Laboratory Studies of Bromide Oxidation in the Presence of Ozone: Evidence for a Glass-Surface Mediated Reaction
- DOI:
10.1023/a:1014286326984 - 发表时间:
2002-02-01 - 期刊:
- 影响因子:1.800
- 作者:
Cort Anastasio;Michael Mozurkewich - 通讯作者:
Michael Mozurkewich
Formation of hydrogen peroxide from illuminated polar snows and frozen solutions of model compounds
- DOI:
10.1016/j.atmosenv.2012.03.047 - 发表时间:
2012-08-01 - 期刊:
- 影响因子:
- 作者:
Ted Hullar;Kelley Patten;Cort Anastasio - 通讯作者:
Cort Anastasio
Cort Anastasio的其他文献
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{{ truncateString('Cort Anastasio', 18)}}的其他基金
Unraveling Nitrate Photochemistry in the Environment
解开环境中硝酸盐光化学的谜团
- 批准号:
2305164 - 财政年份:2023
- 资助金额:
$ 60万 - 项目类别:
Standard Grant
Formation of photo-oxidants and processing of organic species in aerosol liquid water
气溶胶液态水中光氧化剂的形成和有机物质的处理
- 批准号:
2220307 - 财政年份:2022
- 资助金额:
$ 60万 - 项目类别:
Standard Grant
Collaborative Research: Multi-phase Sulfur and Nitrogen Chemistry in Air and Snow during Alaskan Layered Pollution and Chemical Analysis (ALPACA)
合作研究:阿拉斯加层状污染和化学分析(羊驼)期间空气和雪中的多相硫和氮化学
- 批准号:
2109011 - 财政年份:2021
- 资助金额:
$ 60万 - 项目类别:
Standard Grant
Phenol Reactions in Aqueous Particles as a Source of Secondary Organic Aerosol
作为二次有机气溶胶来源的水颗粒中的苯酚反应
- 批准号:
1649212 - 财政年份:2017
- 资助金额:
$ 60万 - 项目类别:
Continuing Grant
Photochemistry of solutes in/on water ice
水冰中/冰上溶质的光化学
- 批准号:
1214121 - 财政年份:2012
- 资助金额:
$ 60万 - 项目类别:
Continuing Grant
Quantifying nitrite and peroxynitrite formation from the photolysis of nitrate in/on ice
定量冰中/冰上硝酸盐光解形成的亚硝酸盐和过氧亚硝酸盐
- 批准号:
1204169 - 财政年份:2012
- 资助金额:
$ 60万 - 项目类别:
Continuing Grant
Collaborative Research: Fog Drop Reactions of Green Leaf Volatiles as a Source of Secondary Organic Aerosols
合作研究:绿叶挥发物作为二次有机气溶胶来源的雾滴反应
- 批准号:
1105049 - 财政年份:2011
- 资助金额:
$ 60万 - 项目类别:
Standard Grant
Formation of Secondary Organic Aerosol by Aqueous-phase Reactions of Phenols
酚类水相反应形成二次有机气溶胶
- 批准号:
1036675 - 财政年份:2010
- 资助金额:
$ 60万 - 项目类别:
Continuing Grant
Physical, Chemical, and Optical Properties of Snow: Impacts on Ocean-Atmosphere-Sea Ice-Snowpack Interactions (OASIS) and Sensitivity to Climate Change
雪的物理、化学和光学特性:对海洋-大气-海冰-积雪相互作用 (OASIS) 的影响和对气候变化的敏感性
- 批准号:
0807702 - 财政年份:2008
- 资助金额:
$ 60万 - 项目类别:
Standard Grant
Photochemical Formation and Destruction of Hydrogen Peroxide on Antarctic Snow Gains
南极积雪中过氧化氢的光化学形成和破坏
- 批准号:
0636985 - 财政年份:2007
- 资助金额:
$ 60万 - 项目类别:
Standard Grant
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