Liquid Chromatography-Tandem Mass Spectrometry Analysis of Perfluorooctane Sulfonate and Perfluorooctanoic Acid in Fish Fillet Samples

Table 2

Method linearity as average regression coefficient (ARC), instrumental detection limit (IDL), instrumental quantification limit (IQL), limit of detection (LOD) and limit of quantification (LOQ), recoveries (mean ± standard deviation, 𝑛=3) and Interday and Intraday repeatability as average coefficient of variation (CV%), for PFOS and PFOA.

	PFOS	PFOA
ARC	0.9971	0.9971
IDL (pg injected)	4.40	2.41
IQL (pg injected)	14.70	8.03
LOD (ng/g)	0.04	0.04
Recovery (%)	90 ± 9.6	76 ± 5.5
Interday CV% (mean)	14	20
Intraday CV% (mean)	8	19