Siloxanes have been found widespread usages in our daily lives, but the knowledge on their migration, transformation and toxicity is still limited. Herein we explored the feasibility of using one-sided silica coated paper as filter membrane to capture siloxanes in the outdoor air, followed by direct mass spectrometric analysis. In contrast to mostly utilized fiber membrane, silica coated paper not only exhibited a higher selective sampling efficiency to three siloxanes with structures of H–[Si(CH₃)₂–O]_7-9-NH₂ from air, but also possessed a high tolerance to organic solvent during mass spectrometric analysis. Due to the above features, the analysis sensitivity of those siloxanes with silica coated paper has been improved 3.1–134.8 folds in contrast to those with commercial filter membrane. Furthermore, we monitored variation in the levels of those siloxanes for a period of one month, and found that a close association (R² = 0.7924–0.9559) existed between their contents and climate parameters (e.g., temperature, weather, atmospheric pressure, humidity, wind direction and wind speed) as well as sampling volume. These knowledge provides a facile and effective methodology to both high-efficient sampling siloxanes and environmental assessment of siloxanes according to climate parameters.

硅氧烷在我们的日常生活中已被广泛使用，但有关其迁移，转化和毒性的知识仍然有限。在本文中，我们探讨了使用单面二氧化硅涂层纸作为滤膜来捕获室外空气中的硅氧烷，然后进行直接质谱分析的可行性。与最常用的纤维膜相反，涂有二氧化硅的纸不仅对具有H– [Si（CH ₃）₂ –O] _7-9 -NH ₂结构的三种硅氧烷表现出更高的选择性采样效率从空气中提取，但在质谱分析过程中对有机溶剂也具有很高的耐受性。由于具有上述特征，与使用商用滤膜的硅氧烷相比，使用二氧化硅涂层纸的硅氧烷的分析灵敏度提高了3.1–134.8倍。此外，我们在一个月的时间内监测了这些硅氧烷含量的变化，发现 它们的含量与气候参数（例如温度，天气，气压，湿度）之间存在密切关联（R ² = 0.7924–0.9559） ，风向和风速）以及采样量。这些知识为高效采样硅氧烷和根据气候参数对硅氧烷进行环境评估提供了一种简便有效的方法。