Deposition and surface-mediated reactions of adsorbed species can play a role in the level of exposure of occupants to indoor pollutants, which include gases and particles. Detailed molecular-level descriptions of these processes occurring on indoor surfaces are difficult to obtain because of the ever-increasing types of surfaces and their proximity to a variety of different indoor emission sources. The results of an investigation of interactions of glass surfaces in unique indoor environments are described here. Window glass, a ubiquitous indoor surface, was placed vertically in six different locations to assess differences in particle and coating depositions. Atomic force microscopy–photothermal infrared (AFM–PTIR) spectroscopic analysis of these glass surfaces reveals differences in morphology and chemical composition, which reflects the diversity of surface processes found in local environments indoors. Overall, this detailed microspectroscopic imaging method shows deposition of particles and the formation of organic thin films that increase the surface area and surface roughness of the glass surface. PTIR spectroscopy demonstrates that depositions can be linked to primary emitters intrinsic to each of the different local environments.

中文翻译：

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晶莹剔透？窗户玻璃上室内沉积物的显微光谱成像和理化特性

吸附物质的沉积和表面介导的反应可以在居住者暴露于室内污染物（包括气体和颗粒）的水平上发挥作用。由于表面类型的不断增加以及它们与各种不同的室内排放源之间的接近性，很难获得在室内表面发生的这些过程的详细分子水平描述。在此描述在独特的室内环境中玻璃表面相互作用的调查结果。将窗户玻璃（一种无处不在的室内表面）垂直放置在六个不同的位置，以评估颗粒和涂层沉积的差异。这些玻璃表面的原子力显微镜–光热红外（AFM–PTIR）光谱分析揭示了形态和化学成分的差异，这反映了室内局部环境中发现的表面过程的多样性。总体而言，这种详细的显微光谱成像方法显示出颗粒的沉积和有机薄膜的形成，从而增加了玻璃表面的表面积和表面粗糙度。PTIR光谱表明，沉积物可以与每个不同局部环境固有的主发射器相关联。