Ultrashort- Through Long-Chain and Alternative PFAS on Raptor Polar X

	Peaks	t_R (min)	Conc. (ng/L)	Precursor Ion	Product Ion
1.	11-Chloroeicosafluoro-3-oxanonane-1-sulfonate (11CL-PF3OUdS)	1.25	400	630.78	450.80
2.	9-Chlorohexadecafluoro-3-oxanonane-1-sulfonate (9Cl-PF3ONS)	1.34	400	530.78	350.85
3.	Perfluorooctanesulfonic acid (PFOS)	1.38	400	498.84	79.97
4.	Perfluorohexanesulfonic acid (PFHxS)	1.49	400	398.90	79.97
5.	Perfluorobutanesulfonic acid (PFBS)	1.64	400	298.97	79.97
6.	Perfluoropropanesulfonic acid (PFPrS)	1.73	400	248.97	79.98
7.	Perfluoroethanesulfonic acid (PFEtS)	1.86	400	198.98	79.92

	Peaks	t_R (min)	Conc. (ng/L)	Precursor Ion	Product Ion
8.	Hexafluoropropylene oxide dimer acid (HFPO-DA)	2.06	400	284.97	168.92
9.	Perfluorooctanoic acid (PFOA)	2.11	400	412.90	368.91
10.	Ammonium 4,8-dioxa-3H-perfluorononanoate (ADONA)	2.15	400	376.90	250.93
11.	Perfluorohexanoic acid (PFHxA)	2.36	400	312.97	268.90
12.	Perfluorobutanoic acid (PFBA)	2.76	400	212.97	168.97
13.	Perfluoropropionic acid (PFPrA)	3.06	400	163.03	119.01
14.	Trifluoroacetic acid (TFA)	3.77	400	113.03	69.01

Column

Raptor Polar X (cat.# 9311A52)

Dimensions:

50 mm x 2.1 mm ID

Particle Size:

2.7 µm

Temp.:

40 °C

Standard/Sample

Diluent:

50:50 Water:methanol

Conc.:

400 ng/L

Inj. Vol.:

10 µL

Mobile Phase

Water, 10 mM ammonium formate, 0.05% formic acid

60:40 Acetonitrile:methanol, 0.05% formic acid

Time (min)	Flow (mL/min)	%A	%B
0.00	0.5	15	85
8.00	0.5	15	85

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