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Headspace gas chromatography for the determination of volatile methylsiloxanes in personal care products

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Most of the reported methods for the analysis of volatile methylsiloxanes focus on their environmental fate or possible health effects, aiming at trace level analysis by using direct injection gas chromatography. However, system contamination as carry over and side reactions at the injector are commonly reported in those cases. In this article, we explore the use of headspace gas chromatography combined with the total vaporization technique as an alternative to avoid such issues for the analysis of linear (L2–L5) and cyclic (D3–D5) volatile methylsiloxanes. The proposed method showed good linearity with R2 values higher than 0.9961 and no significant contribution (α = 0.05) of the intercept. The limit of detection was always below 0.11 μg/vial (0.0025% m/m). Finally, the method was applied to real samples like an adhesive remover, hair oil, shampoo, and cream. After simple sample pretreatment, recoveries higher than 86% were achieved.

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The authors would like to thank the KU Leuven Doctoral Program and the Department of Pharmaceutical and Pharmacological Sciences for their financial support.

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Correspondence to Erwin Adams.

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Aspromonte, J., Giacoppo, G., Wolfs, K. et al. Headspace gas chromatography for the determination of volatile methylsiloxanes in personal care products. Anal Bioanal Chem (2020). https://doi.org/10.1007/s00216-020-02478-y

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  • Gas chromatography
  • Headspace
  • Total vaporization
  • Volatile siloxanes