. Author manuscript; available in PMC: 2019 May 25.

Published in final edited form as: J Chromatogr A. 2018 Mar 23;1551:52–58. doi: 10.1016/j.chroma.2018.03.047

Table 2.

Multiple reaction monitoring (MRM) transition table for surrogate and emerging PFECAs analyzed in this study.

Species	Molecular Formula	Precursor Mass (Da)	Product Mass (Da)	Cone Voltage (V)	Collision Energy (eV)
Surrogate 1	C₅HF₉O₃	279.0	84.9	14	22
Surrogate 1	C₅HF₉O₃	279.0	134.8	22	24
Surrogate 2	C₅HF₉O₄	295.0	84.9	10	26
Surrogate 2	C₅HF₉O₄	295.0	200.9	10	10
Surrogate 3	C₄HF₇O₃	229.0	84.9	10	10
Surrogate 3	C₄HF₇O₃	229.0	184.9	22	18
Surrogate 4	C₇HF₁₃O₃	379.0	184.8	16	12
Surrogate 4	C₇HF₁₃O₃	379.0	134.9	16	34
HFPO-DA	C₆HF₁₁O₃	329.2	168.9	10	12
HFPO-DA	C₆HF₁₁O₃	329.2	286.9	10	6
HFPO-DA IS	[13C]₃C₃HF₁₁O₃	332.2	168.9	10	12
HFPO-DA IS	[13C]₃C₃HF₁₁O₃	332.2	286.9	10	6
PFMOAA	C₃HF₉O₅	178.9	84.9	10	12
PFO2HxA	C₄HF₇O₄	245.0	84.9	22	18
PFO2HxA	C₄HF₇O₄	245.0	178.8	22	4
PFO3OA	C₅HF₉O₅	311.1	84.9	22	20
PFO3OA	C₅HF₉O₅	311.1	150.8	22	4