Volatile PFAS in Cosmetics Using PAL3 Coupled with Triple Quadrupole GC/MS

Significance of the Topic

Poly- and perfluoroalkyl substances (PFAS) provide stable emulsification, water resistance and performance benefits in cosmetics, yet their persistence and bioaccumulation raise health and environmental concerns. As global regulations tighten, robust analytical methods are essential to ensure compliance and consumer safety.

Objectives and Study Overview

This work presents a fully automated workflow combining a PAL3 Series 2 RTC autosampler with an Agilent 7010D triple quadrupole GC/MS for quantifying over 30 volatile PFAS in various cosmetic matrices. The study evaluates sensitivity, accuracy, precision, and detection limits to demonstrate suitability for routine analysis.

Methodology and Instrumentation

COSMETIC samples (foundations, lipsticks, mascaras) were weighed (0.2 g), spiked for quality controls at 50, 125 and 250 µg/kg, and extracted with an ethyl acetate/hexane mixture. The PAL3 autosampler performed automated calibration solution preparation (0.5 to 100 ng/mL), sample extraction, micro-SPE cleanup and injection. Calibration used 1/x weighted linear regression (exclusion of origin).

Instrumentation

• Agilent 8890 GC with multimode inlet (MMI) and splitless liner
• Agilent 7010D triple quadrupole MS with HES 2.0 ion source
• PAL3 Series 2 RTC autosampler
• J&W DB-624 capillary column (30 m × 0.25 mm, 1.40 µm)

Main Results and Discussion

All 34 PFAS exhibited linear calibration curves with R2 > 0.99. Method detection limits were below 1.5 µg/kg for most targets. LOQs of 50 µg/kg were achieved for 29 compounds, with recoveries between 60% and 110% and RSDs ≤ 16%. Chromatographic consistency at LOQ levels confirmed method robustness. Analysis of unknown cosmetics revealed detectable levels of 10:2 fluorotelomer alcohols, perfluorooctyl acrylate, fluoroalkyl silanes and related compounds.

Benefits and Practical Applications

• Automated sample preparation minimizes human error and increases throughput.
• High sensitivity and precision facilitate reliable PFAS monitoring in complex cosmetic matrices.
• Adaptable workflow supports regulatory testing and quality control laboratories.

Future Trends and Opportunities

• Expansion to emerging PFAS and their degradation products.
• Integration with high-resolution mass spectrometry and advanced data analytics for non-targeted screening.
• Miniaturized, solvent-saving extraction techniques to enhance sustainability.
• Standardization of global protocols to meet evolving regulatory requirements.

Conclusion

The automated PAL3-GC/TQ workflow delivers sensitive, accurate and precise quantification of volatile PFAS in cosmetics. It supports regulatory compliance, reduces manual intervention and provides a versatile platform for routine monitoring of persistent chemicals in personal care products.

References

• Hubertus B, et al. PFAS: Persistent, Bioaccumulative and Mobile. Environ Sci Eur. 2023;35:20.
• OECD. PFASs and Alternatives in Cosmetics: Commercial Availability and Current Uses. Risk Management No. 81; Feb 2024.
• Couteau C, et al. Per- and Polyfluoroalkyls Used as Cosmetic Ingredients—Qualitative Study of 765 Products. Food Chem Toxicol. 2024;187:114625.
• European Parliament and Council. Regulation (EC) No 1223/2009 on cosmetic products, 2009.
• Agilent Technologies. Fully Automated Workflow for Volatile PFAS Analysis in Food Contact Materials Using GC-TQ MS. Application Note 5994-8295EN; 2025.