Comparison of carbon isotope ratios of PFOA and PFOS measured using Orbitrap and EA-IRMS. (IMAGE)

Shibaura Institute of Technology

Comparison of carbon isotope ratios of PFOA and PFOS measured using Orbitrap and EA-IRMS.

Caption

The figure shows δ¹³C values of perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) measured using Orbitrap high-resolution mass spectrometry and elemental analyzer–isotope ratio mass spectrometry (EA-IRMS). The close agreement between the two methods demonstrates that Orbitrap-based analysis can reliably determine stable carbon isotope ratios of PFAS compounds, which may help researchers trace the sources of PFAS pollution in the environment.

Credit

Professor Hiroto Kawashima from Shibaura Institute of Technology, Japan

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