Impact of glycol-based solvents on indoor air quality-Artificial fog and exposure pathways of formaldehyde and various carbonyls.

Introduction:
This text discusses the impact of artificial fog, generated by artificial fog machines (AFMs) on indoor air quality. AFMs are commonly used in theatrical and entertainment industries, and smaller versions are available for household use. The text focuses on the chemical composition of artificial fogs and their potential health effects, specifically on the formation of carbonyls from the oxidation of glycols used in AFMs.

Key Points:

* AFMs generate a significant amount of ultra-fine particulate matter, negatively impacting indoor air quality.
* Artificial fogs contain high concentrations of formaldehyde and other carbonyls, introduced to the indoor air upon application.
* Carbonyls accumulate from the oxidative decomposition of glycols, initiated by OH radicals and singlet oxygens and likely sustained by autooxidation.
* Oxidation of glycols by indoor oxidants represents an unrecognized source of toxic carbonyl compounds, applicable to other glycol-based solvents.
* AFMs can introduce chemicals and other impurities to the indoor air, posing potential health risks to users.
* The text highlights the importance of understanding the chemical composition and potential health effects of artificial fogs and other glycol-based solvents.

Main Message:
The study emphasizes the need for proper regulation and monitoring of artificial fog machines and other glycol-based solvents to ensure the safety of indoor air quality. The formation of carbonyls from the oxidation of glycols poses potential health risks, and understanding these processes can inform regulatory measures and guidelines for the safe use of these products. As an expert in regulatory matters, it is crucial to consider the potential health effects of artificial fogs and other glycol-based solvents and to advocate for appropriate regulations to protect public health.

Guo X, Ehindero T, Lau C, Zhao R. Impact of glycol-based solvents on indoor air quality-Artificial fog and exposure pathways of formaldehyde and various carbonyls. Indoor air. 2022;32(9):1. doi:10.1111/ina.13100