Fig. 1: Outline of the PFASs identified in the wastewater. | npj Clean Water

Fig. 1: Outline of the PFASs identified in the wastewater.

From: Comprehensive characterization of per- and polyfluoroalkyl substances in wastewater by liquid chromatography-mass spectrometry and screening algorithms

Fig. 1

a Formula numbers found by nontarget analysis (NTA), quasi-target analysis (QTA) and target analysis (TA); 88, 54 and 2 formulae were exclusively found by NTA, QTA and TA, respectively; 25 formulae were identified by both NTA and QTA; 6 formulae were found by both NTA and TA. b Formula numbers found in the three samples, i.e., total effluent (TE), before reverse osmosis treatment (Pre-RO), and after reverse osmosis treatment (Post-RO); 101 formulae were found in all the wastewater samples; 44 formulae were found in both Pre-RO and Post-RO; 1 formula was found in both TE and Pre-RO; 1 formula was found in both TE and Post-RO; 4, 5 and 13 formulae were exclusively found in TE, Pre-RO and Post-RO, respectively. c Formula numbers and proportions of the identified per- and polyfluorocarboxylic acids (PFCAs) and per- and polyfluoroalkanesulfonic acids (PFSAs); 120 formulae were PFCAs, and 55 were PFSAs. d Total concentrations of all the identified PFASs in individual wastewater samples.

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