The impact of plug-in fragrance diffusers on residential indoor VOC concentrations
The impact of plug-in fragrance diffusers on residential indoor VOC concentrations
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DOI：
10.1039/d2em00444e
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发表时间：
2023-03-08
影响因子：
5.5
通讯作者：
Xia，Bin
中科院分区：
文献类型：
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作者：
Warburton，Thomas;Grange，Stuart K.;Xia，Bin
插入式香味扩散器是家庭中常见的无数含有挥发性有机化合物的消费品之一。在英国阿什福德，使用一个研究小组的60个家庭的干扰影响，室内使用商用扩散器进行了评估。在3天的时间内，在打开扩散器的情况下以及在关闭扩散器的平行对照家庭中采集空气样品。在每个家庭中使用真空释放到6 L二氧化硅涂层罐中进行至少四次测量，并使用气相色谱法与FID和MS（GC-FID-QMS）对>40种VOC进行定量。居住者自我报告他们使用其他含VOC的产品。家庭之间的差异非常大，72小时内所有测量的VOC总和在30和>5000 μg m−3之间，主要是正/异丁烷，丙烷和乙醇。对于那些空气交换率最低的四分位数的家庭（使用CO2和TVOC传感器作为替代品），使用扩散器导致可检测的芳香VOC和某些单个物种的总浓度在统计学上显著增加（p值< 0.02），例如α-蒎烯从中位数9 μg m−3上升到15 μg m−3（p值< 0.02）。观察到的增量与基于香水重量损失、房间大小和空气交换率的模型计算的估计值大致一致。
Plug-in fragrance diffusers are one of myriad volatile organic compound-containing consumer products that are commonly found in homes. The perturbing effects of using a commercial diffuser indoors were evaluated using a study group of 60 homes in Ashford, UK. Air samples were taken over 3 day periods with the diffuser switched on and in a parallel set of control homes where it was off. At least four measurements were taken in each home using vacuum-release into 6 L silica-coated canisters and with >40 VOCs quantified using gas chromatography with FID and MS (GC-FID-QMS). Occupants self-reported their use of other VOC-containing products. The variability between homes was very high with the 72 hour sum of all measured VOCs ranging between 30 and >5000 μg m−3, dominated by n/i-butane, propane, and ethanol. For those homes in the lowest quartile of air exchange rate (identified using CO2 and TVOC sensors as proxies) the use of a diffuser led to a statistically significant increase (p-value < 0.02) in the summed concentration of detectable fragrance VOCs and some individual species, e.g. alpha pinene rising from a median of 9 μg m−3 to 15 μg m−3 (p-value < 0.02). The observed increments were broadly in line with model-calculated estimates based on fragrance weight loss, room sizes and air exchange rates.