Page 60 - Application Notebook - PFAS Analysis

No. SSI-LCMS-119

Average %Recovery %RSD
FOSA 80.25 100.31 6.54
M8FOSA 73.51 91.89 4.03
PFTreA 76.45 95.57 3.85
M2PFTreA 73.54 91.92 4.97
HFPO-DA 82.41 103.01 4.22
13C-HFPO-DA SURR 79.29 99.12 5.91
ADONA 79.94 99.92 3.23
9Cl-PF3ONS 77.92 97.40 3.74
11Cl-PF3OUdS 79.39 99.24 9.23

Our method screened for 24 PFAS compounds, but Only two of the samples had no detectable PFAS
only two were found in any of the samples – PFBA concentration – the glass bottle and the cardboard
(perfluoro butanoic acid) and 6-2 FTS (fluorotelomer container. The other containers had at least one
sulfonate). The highest levels were found in plastic PFAS above the levels recommended by The
bottles. Much of the attention in PFAS analysis has International Bottled Water Association (IBWA). This
been on the longer chain analogs, especially PFOS organization has guidelines for its members of 5 ppt
and PFOA. We did not see either one of these in the for any individual PFAS, and 10 ppt for total PFAS
samples tested. There is little information about the concentration. The EPA has set guidelines of total
ones that we did see regarding their effect on PFAS concentration below 70 ppt, while the FDA is
human health. currently testing many types of foods for PFAS
contamination and will use this data to set exposure
Table 3 shows a summary of the PFAS residues in limits.
each water sample. The sample “Plastic 2” was
labelled as “purified water” on the bottle, while all
other bottles claimed “spring water” as their water
source.

Table 3: PFAS Data by Water Bottle Material.

Recycled
PFAS Blank Glass Cardboard Metal Plastic 1 Plastic 2 Plastic 3
Plastic
PFBA NQ NQ NQ 23.8 NQ 15.3 104.3 18.1
PFPeA ND ND ND ND ND ND ND ND
4-2 FTS ND NQ NQ NQ NQ NQ NQ NQ
PFHxA ND ND ND ND ND ND ND ND
PFBS NQ ND ND NQ ND ND ND ND
PFHpA ND NQ NQ ND NQ NQ ND ND
PFHxS ND ND ND ND ND ND ND ND
PFPeS ND ND ND ND ND ND ND ND
6-2 FTS NQ NQ ND NQ 81.5 NQ ND 253.9
PFOA ND NQ NQ NQ NQ NQ NQ NQ
PFOS ND ND ND ND ND ND ND ND
PFNA ND NQ NQ NQ NQ NQ NQ NQ
PFHpS ND ND ND ND ND ND ND ND
8-2 FTS NQ ND ND ND ND ND ND ND
N-EtFOSAA ND ND ND ND ND ND ND ND
N-MeFOSAA ND ND ND ND ND ND ND ND
PFDA NQ ND NQ NQ ND NQ NQ NQ
PFUnA ND ND ND ND ND ND ND ND
PFNS ND ND ND ND ND ND ND ND
PFDoA NQ NQ NQ ND NQ ND ND NQ
PFDS ND ND ND ND ND ND ND ND
PFTriA ND ND ND ND ND ND ND ND
FOSA ND ND ND NQ ND ND ND ND
PFTreA ND ND ND ND ND ND ND ND
HFPO-DA ND ND ND NQ ND ND ND ND
ADONA ND ND ND ND ND ND ND ND
9Cl-PF3ONS ND ND ND ND ND ND ND ND
11Cl-PF3OUdS ND ND ND ND ND ND ND ND
ND = not detected; NQ = not quantitated