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The indoor fate of terpenes: Quantification of the limonene uptake by materials
Building and Environment ( IF 7.1 ) Pub Date : 2021-01-01 , DOI: 10.1016/j.buildenv.2020.107433
F. Thevenet , M. Verriele , P. Harb , S. Thlaijeh , R. Brun , M. Nicolas , S. Angulo-Milhem

Abstract 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.

中文翻译:

萜烯的室内归宿:材料对柠檬烯的吸收量化

摘要 除了各种来源的室内排放外,密闭环境中 VOC 存在的另一个方面涉及它们在室内的归宿。萜烯由于其普遍存在、来源多样和反应活性,是一种挥发性有机化合物,其对室内空气质量的贡献可能在很大程度上超过一次排放,因为可能存在二次过程,如吸收和二次排放。柠檬烯被标记为代表萜烯行为的物种,并建议选择具有代表性的室内材料。选定表面的柠檬烯吸收表征是在典型的室内条件下使用基于 FLEC 的实验装置进行的,允许 (i) 柠檬烯分配系数确定和 (ii) 这种相互作用的可逆性质的量化。有趣的是,感兴趣的材料对柠檬烯表现出高度差异化的亲和力,证明了它们对萜烯损失的表面贡献的对比。玻璃被确认为一个不重要的水槽,而棉织物和石膏板是柠檬烯表面损失的主要贡献者,并表现出高表面吸收能力。这项工作允许对从次要到主要柠檬烯汇的所选材料进行定量排名。吸收过程的可逆性量化为进一步的二级柠檬烯排放提供了关键见解。主要的水槽材料被突出显示,例如诱导不可逆的柠檬烯吸收,从而产生可能用于进一步氧化过程的反应性有机物的室内表面池。玻璃被确认为一个不重要的水槽,而棉织物和石膏板是柠檬烯表面损失的主要贡献者,并表现出高表面吸收能力。这项工作允许对从次要到主要柠檬烯汇的所选材料进行定量排名。吸收过程的可逆性量化为进一步的二级柠檬烯排放提供了关键见解。主要的水槽材料被突出显示,例如诱导不可逆的柠檬烯吸收,从而产生可能用于进一步氧化过程的反应性有机物的室内表面池。玻璃被确认为一个不重要的水槽,而棉织物和石膏板是柠檬烯表面损失的主要贡献者,并表现出高表面吸收能力。这项工作允许对从次要到主要柠檬烯汇的所选材料进行定量排名。吸收过程的可逆性量化为进一步的二级柠檬烯排放提供了关键见解。主要的水槽材料被突出显示,例如诱导不可逆的柠檬烯吸收,从而产生可能用于进一步氧化过程的反应性有机物的室内表面池。吸收过程的可逆性量化为进一步的二级柠檬烯排放提供了关键见解。主要的水槽材料被突出显示,例如诱导不可逆的柠檬烯吸收,从而产生可能用于进一步氧化过程的反应性有机物的室内表面池。吸收过程的可逆性量化为进一步的二级柠檬烯排放提供了关键见解。突出显示了主要的水槽材料,例如诱导不可逆的柠檬烯吸收,从而产生可能用于进一步氧化过程的反应性有机物的室内表面池。
更新日期:2021-01-01
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