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首页> 外文期刊>Building and Environment >The indoor fate of terpenes: Quantification of the limonene uptake by materials
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The indoor fate of terpenes: Quantification of the limonene uptake by materials

机译：Terpenes的室内命运：量化材料的溶原体吸收

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摘要

Beyond their indoor emission by various sources, another aspect of the presence of VOCs in confined environments involves their indoor fate. Terpenes, because of their ubiquity, source variety and reactivity, are VOCs whose contributions to the indoor air quality may largely exceed primary emissions because of possible secondary processes such uptake and secondary emissions. Limonene is flagged as a species typifying the behavior of terpenes, and a selection of representative indoor materials is proposed. Limonene uptake characterization of selected surfaces is performed under typical indoor conditions using a FLEC-based experimental setup allowing (i) limonene partitioning coefficient determination and (ii) quantification of the reversible nature of this interaction. Interestingly, the materials of interest exhibit highly differentiated affinities for limonene, evidencing the contrast in their surface contributions to terpene loss. Glazing is confirmed as a non-significant sink, while cotton fabric and gypsum board are major contributors to limonene surface loss and exhibit high surface uptake capacities. This work allows a quantitative ranking of the selected materials from minor to major limonene sinks. Reversibility quantification of the uptake process provides key insights into further secondary limonene emissions. The major sink materials are highlighted such as inducing irreversible limonene uptake, thus creating indoor surface pools of reactive organics possibly available for further oxidation processes.
机译：除了各种来源的室内排放之外，狭窄环境中VOC的存在的另一个方面涉及他们的室内命运。 Terpenes，因为它们的难以竭尽全厌，源种多样性和反应性，是由于可能的次要处理和次要排放，所以对室内空气质量的贡献可能主要超过初级排放。 Limonene被标记为典型的种类，这是提出了一系列代表室内材料。利用基于FLEC的实验装置在典型的室内条件下允许（i）柠檬烯分配系数测定和（ii）定量这种相互作用的可逆性的定量的典型室内条件下进行选定表面的表征。有趣的是，利益材料表现出高度分化的柠檬烯，证明其表面造成对萜烯损失的对比度。玻璃被证实为非显着的水槽，而棉花面料和石膏板是溶性表面损失的主要贡献者，并且具有高表面吸收能力。这项工作允许从次要的柠檬膜水槽中定量排名所选材料。可逆性量化摄取过程提供了进一步的二级柠檬烯排放的关键见解。主要水槽材料突出，例如诱导不可逆的柠檬烯摄取，从而产生可能可用于进一步氧化过程的反应性有机物的室内表面池。

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