Emissions of volatile organic compounds from reed diffusers in indoor environments

Reed diffusers are widely used as an indoor scenting source, in which aromatic components are thought to have sleep-improving and anxiety-relieving effects. Nevertheless, it is crucial to consider the potential health impacts associated with certain components in aromatherapy. This study aims to comprehensively explore the impact of reed diffusers on indoor air quality. We analyze the composition of gas-phase volatile organic compounds (VOCs) based on emission tests of a typical reed diffuser in a full-scale chamber. The observed top three VOCs are linalool acetate, linalool, and α-pinene, with linalool acetate accounting for 31.4%–43.6% of the total at 25°C. A physics-based model is then developed to characterize VOC emissions from a reed diffuser, and the key transport parameters are determined. Independent experiments validate the reliability of model parameters. Computational fluid dynamics simulations further demonstrate that reed diffuser position significantly impacts VOC distribution, which is essential for sophisticated exposure assessment. [Display omitted] •Experimental observations on the emissions of a typical reed diffuser•Composition of volatile organic compounds commonly found in aromatherapy is measured•A physics-based model is developed to describe emissions•Temperature and position impact emission characteristics in indoor environments Zhang and He et al. observe volatile organic compound emissions from reed diffusers and predict transport using physics-based models. Temperature and diffuser position influence volatile compound emissions in realistic indoor settings, giving insight into how reed diffuser usage impacts indoor air quality and well-being.