Some of the fragrance compounds in aerosols tend to remain trapped inside the droplets. The ability to capture these droplets would make it possible to desorb and transfer the analytes dissolved within for determination. In this study, we design a novel filter-incorporated needle-trap device and use it to capture fragrance compounds in droplets as well as the gas phase of seven aerosol spray samples. For comparison, thin-film and solid-phase microextraction were also employed to extract gas-phase-borne fragrances from the same sprays. The results revealed that the filter-incorporated needle-trap device enables the extraction of total concentrations due to its ability to trap fragrance-containing droplets, whereas thin-film and solid-phase microextraction are only able to extract unbound compounds present in the gas phase. In addition, the developed needle-trap device provided acceptable results, proving its applicability for the analysis of aroma in other samples, such as beer and soda.

中文翻译：

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使用带有过滤器的针阱装置和固相微萃取技术测定液滴结合和游离气相香料

气溶胶中的一些香味化合物往往会滞留在液滴内。捕获这些液滴的能力将使解吸和转移溶解在其中的分析物成为可能。在这项研究中，我们设计了一种新型的带有过滤器的针阱装置，并用它来捕获液滴中的香味化合物以及七个气溶胶喷雾样品的气相。为了进行比较，还采用薄膜和固相微萃取从相同的喷雾中萃取气相携带的香味。结果表明，结合过滤器的针阱装置能够提取总浓度，因为它能够捕获含香料的液滴，而薄膜和固相微提取只能提取气相中存在的未结合化合物. 此外，