1.1This procedure covers the determination of selected polyfluorinated compounds (PFCs) in a soil matrix using solvent extraction, filtration, followed by liquid chromatography (LC) and detection with tandem mass spectrometry (MS/MS). These analytes are qualitatively and quantitatively determined by this method. This method adheres to multiple reaction monitoring (MRM) mass spectrometry. This procedure utilizes a quick extraction and is not intended to generate an exhaustive accounting of the content of PFCs in difficult soil matrices. An exhaustive extraction procedure for polyfluoralkyl substances, such as published by Washington et al.,2 for difficult matrices should be considered when analyzing PFCs.

1.2Units-The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3The Method of Detection Limit3 and Reporting Range4 for the target analytes are listed in Table 1.

Analyte	MDL (ng/kg)	Reporting Limit (ng/kg)
PFTreA	6.76	25-1000
PFTriA	5.26	25-1000
PFDoA	3.56	25-1000
PFUnA	2.45	25-1000
PFDA	5.54	25-1000
PFOS	18.83	50-1000
PFNA	2.82	25-1000
PFecHS	2.41	25-1000
PFOA	6.24	25-1000
PFHxS	7.75	25-1000
PFHpA	5.80	25-1000
PFHxA	15.44	50-1000
PFBS	6.49	25-1000
PFPeA	20.93	125-5000
PFBA	22.01	125-5000
FHEA	199.04	600-20 000
FOEA	258.37	750-20 000
FDEA	137.46	500-20 000
FOUEA	4.85	25-1000
FhpPa	5.09	25-1000
FHUEA	3.50	25-1000

(A)Abbreviations are defined in 3.2.

Analyte/Surrogate	LV1	LV2	LV3	LV4	LV5	LV6	LV7	LV8	LV9
PFPeA, PFBA	25	50	100	200	300	400	500	750	1000
PFTreA, PFTriA, PFDoA, PFUnA, PFDA, PFOS, PFNA, PFHxA, PFHpA, PFBS, PFechS, PFOA, PFHxS, FOUEA, FHUEA, FHpPA, MPFBS, MPFHxA, MPFUnA, MPFOA, MPFDA, MPFOS, MPFNA, MPFHxS, MPFBA	5	10	20	40	60	80	100	150	200
FHEA, FOEA, FDEA	100	200	400	800	1200	1600	2000	3000	4000