4.2 Article

Single-particle measurements of phase partitioning between primary and secondary organic aerosols

期刊

FARADAY DISCUSSIONS
卷 189, 期 -, 页码 31-49

出版社

ROYAL SOC CHEMISTRY
DOI: 10.1039/c5fd00214a

关键词

-

资金

  1. National Science Foundation [CHE1412309]
  2. NSF [CBET0922643]
  3. Wallace Research Foundation
  4. Division Of Chemistry
  5. Direct For Mathematical & Physical Scien [1412309] Funding Source: National Science Foundation

向作者/读者索取更多资源

Organic aerosols provide a measure of complexity in the urban atmosphere. This is because the aerosols start as an external mixture, with many populations from varied local sources, that all interact with each other, with background aerosols, and with condensing vapors from secondary organic aerosol formation. The externally mixed particle populations start to evolve immediately after emission because the organic molecules constituting the particles also form thermodynamic mixtures - solutions - in which a large fraction of the constituents are semi-volatile. The external mixtures are thus well out of thermodynamic equilibrium, with very different activities for many constituents, and yet also have the capacity to relax toward equilibrium via gas-phase exchange of semi-volatile vapors. Here we describe experiments employing quantitative single-particle mass spectrometry designed to explore the extent to which various primary organic aerosol particle populations can interact with each other or with secondary organic aerosols representative of background aerosol populations. These methods allow us to determine when these populations will and when they will not mix with each other, and then to constrain the timescales for that mixing.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.2
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据