CAREER: Towards a Better Understanding of Ambient Semi-volatile Organic Aerosol: Investigation of Thermodynamic Properties of Multi-component Organic Aerosols

职业:更好地了解环境半挥发性有机气溶胶:多组分有机气溶胶的热力学性质研究

基本信息

  • 批准号:
    0955845
  • 负责人:
  • 金额:
    $ 45.35万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2010
  • 资助国家:
    美国
  • 起止时间:
    2010-03-15 至 2013-02-28
  • 项目状态:
    已结题

项目摘要

The goal of this project is to obtain empirical parameterizations of thermodynamic properties of multi-component organic aerosol to be used in chemical transport models. The main hypothesis is that volatility of an organic compound in a mixture is a function of the carbon number and the polarity of this compound, as well as those of the mixture; and that volatility of the total mixture can be predicted using a simplified matrix containing binned data on the carbon number and polarity of each of the compounds in the mixture. Prediction of ambient semi-volatile organic aerosol remains highly problematic and air quality models often do not agree with observations. The lack of understanding of the partitioning of semi-volatile compounds between the gas and the complex aerosol matrix is one of the main reasons for this discrepancy.In this study the equilibrium thermodynamic properties of multi-component aerosols will be investigated under controlled laboratory conditions as well as in the field. In the laboratory experiments model mixtures of organic compounds as well as modified ambient aerosols will be tested. The ambient aerosols will be modified in a controlled way by adding known amounts of different organic substances of known thermodynamic properties and variable molecular weight and polarity. The equilibrium gas/aerosol partitioning in a temperature range relevant to ambient conditions will be investigated using the Integrated Volume Method (IVM), developed in the principal investigator's (PI) laboratory. The results will be used to derive equilibrium vapor pressures and activity coefficients of test compounds as a function of their carbon number and polarity and to determine the minimum number of bins along these dimensions that will adequately represent ambient aerosol volatility.This project will improve the understanding, predictions and control of the major fraction of ambient aerosol, which is relevant for public health and global climate change. The educational and outreach component will be directed at a wide audience in order to help educate the public about the current environmental problems related to air pollution and help attract students to environmental science and engineering. Special attention will be given to attracting and retaining under-represented groups, such as women and minorities. The project will include an educational outreach component with hands-on experience for middle school students; summer research projects will be offered to students from the North Carolina School of Science and Math, for graduate and undergraduate students at Duke University and North Carolina Central University (NCCU), an Historically Black University. The research results will be disseminated via conferences and peer-reviewed publications. To reach a wider audience the PI plans to utilize the power of social media tools, such as Facebook groups, to share the research results and engage the community directly.
本计画的目标是获得多组份有机气溶胶热力学性质的经验参数化,以应用于化学输送模式。 主要假设是,混合物中有机化合物的挥发性是该化合物的碳数和极性以及混合物的碳数和极性的函数;并且可以使用包含混合物中每种化合物的碳数和极性的分组数据的简化矩阵来预测总混合物的挥发性。 环境半挥发性有机气溶胶的预测仍然存在很大问题,空气质量模型往往与观测结果不一致。 缺乏了解的气体和复杂的气溶胶matrix之间的半挥发性化合物的分区是这种discriminal.In这项研究中的平衡热力学性质的多组分气溶胶的主要原因之一将在受控的实验室条件下,以及在现场进行调查。 在实验室实验中,将测试有机化合物的模型混合物以及改性的环境气溶胶。 将通过添加已知量的具有已知热力学性质和可变分子量和极性的不同有机物质,以受控方式改变环境气溶胶。 将使用主要研究者(PI)实验室开发的积分体积法(IVM)研究与环境条件相关的温度范围内的平衡气体/气溶胶分配。结果将用于推导测试化合物的平衡蒸汽压和活度系数,作为其碳数和极性的函数,并确定沿这些维度的最小箱数沿着,以充分代表环境气溶胶挥发性,该项目将提高对环境气溶胶主要部分的理解、预测和控制,这与公共健康和全球气候变化有关。 教育和外展部分将面向广泛的受众,以帮助教育公众了解目前与空气污染有关的环境问题,并帮助吸引学生学习环境科学和工程。将特别注意吸引和留住代表性不足的群体,如妇女和少数民族。 该项目将包括一个教育推广部分,为中学生提供实践经验;夏季研究项目将提供给来自北卡罗来纳州科学和数学学院的学生,杜克大学和北卡罗来纳州中央大学(NCCU)的研究生和本科生,这是一所历史上的黑人大学。 研究结果将通过会议和同行评审的出版物传播。 为了接触到更广泛的受众,PI计划利用Facebook群组等社交媒体工具的力量来分享研究结果并直接参与社区。

项目成果

期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ monograph.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ sciAawards.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ conferencePapers.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ patent.updateTime }}

Andrey Khlystov其他文献

An approach to monitor the fraction of elemental carbon in the ultrafine aerosol
  • DOI:
    10.1016/j.atmosenv.2005.07.016
  • 发表时间:
    2005-10-01
  • 期刊:
  • 影响因子:
  • 作者:
    Harry ten Brink;Gerard Hoek;Andrey Khlystov
  • 通讯作者:
    Andrey Khlystov
Integrated chemical/biochemical sample collection, pre-concentration, and analysis on a digital microfluidic lab-on-a-chip platform
在数字微流控芯片实验室平台上集成化学/生化样品采集、预浓缩和分析
  • DOI:
  • 发表时间:
    2004
  • 期刊:
  • 影响因子:
    0
  • 作者:
    R. Fair;Andrey Khlystov;V. Srinivasan;V. Pamula;Kathryn Nicole Weaver
  • 通讯作者:
    Kathryn Nicole Weaver

Andrey Khlystov的其他文献

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

{{ truncateString('Andrey Khlystov', 18)}}的其他基金

EAGER: Initial Phase of Development of a Molecular Isomer Resolving Aerosol Collector and Analyzer (MIRACA)
EAGER:分子异构体解析气溶胶收集器和分析仪 (MIRACA) 开发的初始阶段
  • 批准号:
    2322916
  • 财政年份:
    2023
  • 资助金额:
    $ 45.35万
  • 项目类别:
    Standard Grant
MRI: Development of an Automated Collection and Extraction System (ACES) for Off- or On-line Chemical Analysis of Organic Aerosol Species
MRI:开发自动收集和提取系统 (ACES),用于有机气溶胶种类的离线或在线化学分析
  • 批准号:
    1920361
  • 财政年份:
    2019
  • 资助金额:
    $ 45.35万
  • 项目类别:
    Standard Grant
Atmospheric Chemistry of Bioaerosols
生物气溶胶的大气化学
  • 批准号:
    1760328
  • 财政年份:
    2018
  • 资助金额:
    $ 45.35万
  • 项目类别:
    Standard Grant
Collaborative Research: Development of a Digital Microfluidic Impactor for One Minute Measurements of Main Inorganic Aerosol Species
合作研究:开发数字微流体冲击器,用于一分钟测量主要无机气溶胶种类
  • 批准号:
    1408241
  • 财政年份:
    2014
  • 资助金额:
    $ 45.35万
  • 项目类别:
    Standard Grant
SGER: The Initial Phase of Development of Digital Microfluidic Impactor
SGER:数字微流控冲击器发展的初始阶段
  • 批准号:
    0827422
  • 财政年份:
    2008
  • 资助金额:
    $ 45.35万
  • 项目类别:
    Standard Grant

相似海外基金

Designing synthetic matrices for enhanced organoid development: A step towards better disease understanding
设计合成基质以增强类器官发育:更好地了解疾病的一步
  • 批准号:
    MR/Y033760/1
  • 财政年份:
    2024
  • 资助金额:
    $ 45.35万
  • 项目类别:
    Research Grant
Towards better structural steels sections: optimisation of high frequency induction welded line pipe products
迈向更好的结构钢截面:高频感应焊管产品的优化
  • 批准号:
    2884562
  • 财政年份:
    2023
  • 资助金额:
    $ 45.35万
  • 项目类别:
    Studentship
Analysis of synthetic derivatives with reduced lipophilicity as candidate potentiators towards better treatment alternatives for Cystic Fibrosis
分析亲脂性降低的合成衍生物作为候选增效剂,以获得更好的囊性纤维化治疗替代方案
  • 批准号:
    481159
  • 财政年份:
    2023
  • 资助金额:
    $ 45.35万
  • 项目类别:
Towards a better understanding of cardio and cerebrovascular diseases
加深对心脑血管疾病的认识
  • 批准号:
    2872635
  • 财政年份:
    2023
  • 资助金额:
    $ 45.35万
  • 项目类别:
    Studentship
CAREER: NgOS: Towards Better Operating Systems: Fast, Secure, and Reliable
职业:NgOS:迈向更好的操作系统:快速、安全且可靠
  • 批准号:
    2239615
  • 财政年份:
    2023
  • 资助金额:
    $ 45.35万
  • 项目类别:
    Continuing Grant
Towards a better understanding of FC-CVD carbon nanotube synthesis
更好地理解 FC-CVD 碳纳米管合成
  • 批准号:
    2891622
  • 财政年份:
    2023
  • 资助金额:
    $ 45.35万
  • 项目类别:
    Studentship
Towards a better understanding of the effect of the pentafluorosulfanyl group on the lipophilicity and acid/base properties of alcohols and amines
更好地了解五氟硫基对醇和胺的亲脂性和酸/碱性质的影响
  • 批准号:
    571856-2021
  • 财政年份:
    2022
  • 资助金额:
    $ 45.35万
  • 项目类别:
    Alliance Grants
Towards a better understanding of polar climate variability
更好地了解极地气候变化
  • 批准号:
    RGPIN-2021-03888
  • 财政年份:
    2022
  • 资助金额:
    $ 45.35万
  • 项目类别:
    Discovery Grants Program - Individual
Towards Better Understanding of ALS using a Multi-Marker Discovery Approach from a Multi-Modal Database (ALS4M)
使用多模态数据库的多标记发现方法更好地理解 ALS (ALS4M)
  • 批准号:
    10704220
  • 财政年份:
    2022
  • 资助金额:
    $ 45.35万
  • 项目类别:
Collaborative Research: Towards Better Understanding of the Climate System Using a Global Storm-Resolving Model
合作研究:利用全球风暴解决模型更好地了解气候系统
  • 批准号:
    2218829
  • 财政年份:
    2022
  • 资助金额:
    $ 45.35万
  • 项目类别:
    Standard Grant
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了