Shaken, not stirred: a schools test for aldehydes and ketones

Plater, M. John

doi:10.1177/1747519819886491

Cited by 2 publications

(2 citation statements)

References 17 publications

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“…2,4-DNPH, or Brady's reagent, is one of the most widely used chemicals to measure small carbonyl compounds. 64,65 The specic methodology was adapted from our previous study 40 and is thus introduced only briey here. A 2,4-DNPH working stock solution was prepared before any of the analyses.…”

Section: Sample Preparationmentioning

confidence: 99%

Autoxidation of glycols used in inhalable daily products: implications for the use of artificial fogs and e-cigarettes

Guo,

Chan,

Gautam

et al. 2023

Environ. Sci.: Processes Impacts

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Section: Sample Preparationmentioning

confidence: 99%

Autoxidation of glycols used in inhalable daily products: implications for the use of artificial fogs and e-cigarettes

Guo,

Chan,

Gautam

et al. 2023

Environ. Sci.: Processes Impacts

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“…2,4-DNPH, or Brady's reagent, is one of the most widely used chemicals to measure small carbonyl compounds. 58,59 The specific methodology was adapted from our previous study, 38 and thus is introduced only briefly here. A 2,4-DNPH working stock solution was prepared before any of the analyses.…”

Section: Derivatization By 24-dnphmentioning

confidence: 99%

Autoxidation of Glycols Used in Inhalable Daily Products: Implications to the Use of Artificial Fogs and E-cigarettes

Guo

Chan

Gautam

et al. 2023

Preprint

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The use of glycols is seen in various industries and occupations. In past decades, health implications from inhalable glycols have gained public attention. By impacting indoor air quality, inhalable glycols may cause adverse health effects, especially for workers in different occupations receiving frequent exposure. Our previous work highlighted the rapid accumulation of formaldehyde and glycolaldehyde in fog juice, thus proposing the occurrence of glycol autoxidation. However, the fundamentals of glycol autoxidation remained unclear and unexplored. Our goal is to investigate the autoxidation of common glycols during indoor storage. Carbonyls were quantified using liquid chromatography-mass spectrometry (LC-MS), and peroxides from autoxidation were monitored via iodometry and UV-Vis spectrometry. The impact of external factors was also investigated, such as the water mixing ratio, and antioxidants (Vitamin C). Via weekly monitoring, a rapid formation of aldehydes in many glycols was observed, such as E-cigarette juice and triethylene glycol (TEG). Occurrence of autoxidation was confirmed by the rise of the total peroxide concentration. Additionally, we highlighted the dependence of carbonyl formation rate on the TEG-water mixing ratio, demonstrating the complicated role water plays in glycol autoxidation. We have also tested the effectiveness of Vitamin C, with suggestions for minimizing the formation of toxic carbonyls in consumer products.

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Shaken, not stirred: a schools test for aldehydes and ketones

Cited by 2 publications

References 17 publications

Autoxidation of glycols used in inhalable daily products: implications for the use of artificial fogs and e-cigarettes

Autoxidation of glycols used in inhalable daily products: implications for the use of artificial fogs and e-cigarettes

Autoxidation of Glycols Used in Inhalable Daily Products: Implications to the Use of Artificial Fogs and E-cigarettes

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