Identification of unwanted photoproducts of cosmetic preservatives in personal care products under ultraviolet-light using solid-phase microextraction and micro-matrix solid-phase dispersion

Journal of Chromatography. a
Gerardo Alvarez-RiveraMarta Lores

Abstract

The photochemical transformation of widely used cosmetic preservatives including benzoates, parabens, BHA, BHT and triclosan has been investigated in this work applying an innovative double-approach strategy: identification of transformation products in aqueous photodegradation experiments (UV-light, 254nm), followed by targeted screening analysis of such photoproducts in UV-irradiated cosmetic samples. Solid-phase microextraction (SPME) was applied, using different fiber coatings, in order to widen the range of detectable photoproducts in water, whereas UV-irradiated personal care products (PCPs) containing the target preservatives were extracted by micro-matrix solid-phase dispersion (micro-MSPD). Both SPME and micro-MSPD-based methodologies were successfully optimized and validated. Degradation kinetics of parent species, and photoformation of their transformation by-products were monitored by gas chromatography coupled to mass spectrometry (GC-MS). Thirty nine photoproducts were detected in aqueous photodegradation experiments, being tentatively identified based on their mass spectra. Transformation pathways between structurally related by-products, consistent with their kinetic behavior were postulated. The photoformation ...Continue Reading

References

Feb 11, 2005·Analytical and Bioanalytical Chemistry·Marta LoresRafael Cela
Mar 8, 2006·Analytical and Bioanalytical Chemistry·Lucia Sánchez-PradoRafael Cela
Jun 28, 2007·Environmental Science & Technology·Rachel G AdamsPhilip M Gschwend
Sep 29, 2011·Analytical and Bioanalytical Chemistry·Lucia Sanchez-PradoMaria Llompart
Nov 19, 2011·Journal of Hazardous Materials·Rosario RodilRafael Cela

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Citations

Jun 24, 2016·Journal of Separation Science·Zhixiong Zhong, Gongke Li
Mar 10, 2018·Rapid Communications in Mass Spectrometry : RCM·Ségolène De VaugeladeStéphane Bouchonnet
Jun 4, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Ana AlvesMadalena Pinto
Oct 28, 2018·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Xijuan Tu, Wenbin Chen
Aug 28, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Maria CeleiroMarta Lores

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