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The impact of plug-in fragrance diffusers on residential indoor VOC concentrations
Environmental Science: Processes & Impacts ( IF 4.3 ) Pub Date : 2023-03-08 , DOI: 10.1039/d2em00444e
Thomas Warburton 1 , Stuart K Grange 1, 2 , James R Hopkins 1, 3 , Stephen J Andrews 1, 3 , Alastair C Lewis 1, 3 , Neil Owen 4 , Caroline Jordan 4 , Greg Adamson 5 , Bin Xia 6
Affiliation  

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.

中文翻译:

插入式香薰机对住宅室内 VOC 浓度的影响

插入式香薰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,一个由 60 户家庭组成的研究小组评估了在室内使用商业扩散器的扰动效果。空气样本在 3 天的时间段内采集,扩散器打开,并在一组平行的控制室中关闭扩散器。每个家庭至少进行四次测量,使用真空释放到 6 升二氧化硅涂层罐中,并使用气相色谱法与 FID 和 MS (GC-FID-QMS) 量化 >40 VOC。居住者自我报告了他们使用其他含 VOC 的产品。家庭之间的可变性非常高,所有测量的 VOC 的 72 小时总和介于 30 和 >5000 μg m -3之间,主要由n/i-丁烷、丙烷和乙醇。对于空气交换率最低四分位数的家庭(使用 CO 2和 TVOC 传感器作为代理),扩散器的使用导致可检测的香味 VOC 和一些总浓度的统计显着增加( p值 < 0.02)个别物种,例如α 蒎烯的中值从 9 μg m -3上升到 15 μg m -3p值 < 0.02)。观察到的增量与基于香味重量损失、房间大小和空气交换率的模型计算估计大致一致。
更新日期:2023-03-08
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