Analysis of Specific Perfluorohexane Sulfonate Isomers by Liquid Chromatography-Tandem Mass Spectrometry: Method Development and Application in Source Apportionment

Table 3

Conditions of the MS/MS for isolation of target analytes and corresponding internal standard for quantification.

Chemicals	Transitions	Cone voltage (V)	Collisionvoltage (V)	Internal standard	Transitions	Conevoltage (V)	Collisionvoltage (V)
n-PFHxS	399 ⟶ 80	40	30	^18O2-n-PFHxS	403 ⟶ 84	40	30
1m-PFHxS	399 ⟶ 161		25
	399 ⟶ 319		25
2m-PFHxS	399 ⟶ 80		30
	399 ⟶ 211		25
3m-PFHxS	399 ⟶ 261		35
	399 ⟶ 219		35
	399 ⟶ 180		25
4m-PFHxS	399 ⟶ 169		35
	399 ⟶ 230		25

: for quantification.