Toy swords revisited: identification of additional odour-active contaminants
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Odorants related to offensive odours in three children’s toy swords were identified and characterized by human sensory and chemical analyses. Samples were initially evaluated by a trained sensory panel. Panellists reported unpleasant smells in all samples that were dominated by mothball-like, phenolic and rubber-like notes and additionally almond-like and fatty notes. The odorants from the samples were then extracted using dichloromethane and subsequent solvent-assisted flavour evaporation distillation. Enriched distillates were then analysed by means of single and two-dimensional gas chromatography–mass spectrometry/olfactometry. An additional screening analysis for polycyclic aromatic hydrocarbons was also performed on all samples. The most predominant odorants identified in the samples were naphthalene, 1- and 2-methylnaphthalene and diverse dimethylnaphthalene isomers with gasoline-like smells. Acetophenone, with an almond-like, flowery smell, was also detected. Furthermore, the phenolic/leather-like smelling substances 3-ethylphenol, 3-hydroxyacetophenone, and 3-methoxyacetophenone were identified in one sample.
KeywordsAroma extract dilution analysis (AEDA) Gas chromatography olfactometry (GC-O) Products of daily use Plastic Toys
The authors would like to thank Dr. Eva Ortner for proofreading the manuscript.
This study was funded by the Bavarian State Ministry of Environment and Consumer Safety (StMUV).
Compliance with ethical standards
Conflict of interest
There are no competing financial or nonfinancial interests to declare.
The study was conducted in agreement with the Declaration of Helsinki. The study (registration number 180_16B) was approved by the Ethical Committee of the Medical Faculty, Friedrich-Alexander Universität Erlangen-Nürnberg. Informed consent was obtained from all subjects.
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