Collaborative Research: Submicron Organic Aerosol Measurements During ACE-Asia

这个与罗格斯大学的芭芭拉·特平的合作研究项目，是对有机物种在大气颗粒中的作用的调查。在ACE-Asia实地项目期间，东亚流出物气溶胶有机物的测量将由船上（NOAA R/V Brown）和飞机（NCAR C-130）进行。测量包括：1)使用热光学检测技术进行半连续元素/有机碳（EC/OC）分析，以及2)使用傅里叶变换红外光谱分析时间积分滤波样品。EC/OC测量提供了一个重要的指标，燃烧排放的作用在空气中采样。FTIR有机分析描述了有机物的质量，并根据官能团和在不同极性溶剂中的溶解度对这些有机物进行了分类。这提供了有关水溶性有机化合物的质量分数的信息，并有助于增强颗粒的吸水性。不溶于颗粒水相的疏水有机组分也将被量化。

This collaborative research project with Barbara Turpin, Rutgers University, is an investigation of the role of organic species in atmospheric particles. Measurements of aerosol organics in east Asian outflow will be made from shipboard (NOAA R/V Brown) and aircraft (NCAR C-130), during the ACE-Asia field program. The measurements include: 1) semi-continuous elemental/organic carbon (EC/OC) analysis using a thermo-optical detection technique, and 2) time-integrated filter samples for analysis by Fourier Transform Infrared spectroscopy. The EC/OC measurements provide an important indicator for the role of combustion emissions in the air masses sampled. The FTIR organic analyses describe the mass of organic species and classify those species by functional group and solubility in solvents of different polarity. This provides information about the mass fraction of organic compounds that are water-soluble and contribute to enhanced water uptake by particles. The hydrophobic organic fraction that does not dissolve in the particulate aqueous phase will also be quantified.