Data Correction Workflow for Isotope Analysis of Perfluorooctanoic Acid (PFOA) by Orbitrap-IRMS
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Paul K Wojtal1,2, Ralph N Mead1,2, Chad S Lane1,2
1Department of Earth and Ocean Sciences, University of North Carolina Wilmington, Wilmington, North Carolina28403, United States.
Abstract:
Data corrections (data normalization) for isotope analyses are crucial for traditional magnetic sector isotope ratio mass spectrometry to facilitate meaningful interlaboratory data comparisons. Within the nascent field of Orbitrap-IRMS (isotope ratio mass spectrometry by Orbitrap mass spectrometry) and particularly the application of Orbitrap-IRMS to the analysis of per- and polyfluoroalkyl substances (PFASs), data correction procedures do not exist. We present a procedure for correcting data generated during the analysis of PFASs by Orbitrap-IRMS. This procedure will provide for a robust comparison of data between laboratories.
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