Page 59 - Application Notebook - PFAS Analysis

No. SSI-LCMS-119

Figure 2: Comparison of Chromatograms with and without a Delay Column.

Recoveries of an 80 ppt standard are shown in Table ranged from 87.6% to 129.5%, and %RSD was
2. The data represent an average of three individual below 10% for most compounds. The LOQ was
runs. This demonstrates the accuracy and determined at 10 ppt in the sample.
reproducibility of the measurements. Recoveries

Table 2: Recoveries and Reproducibility of 80 ppt Standard.

Average %Recovery %RSD
PFBA 103.64 129.55 21.17
MPFBA 81.87 102.34 2.33
PFPeA 79.29 99.12 2.52
M5PFPeA 83.49 104.36 1.39
4-2 FTS 85.54 106.92 6.39
M2-4-2 FTS 86.33 107.91 9.36
PFHxA 78.06 97.58 3.69
M5PFHxA 80.45 100.56 2.83
PFBS 79.55 99.44 3.38
M3PFBS 79.86 99.83 1.25
PFHpA 81.40 101.75 3.39
M4PFHpA 82.34 102.92 2.96
PFHxS 79.85 99.82 3.85
PFPeS 76.30 95.38 8.26
6-2 FTS 80.89 101.12 10.79
M2-6-2 FTS 77.43 96.78 22.96
PFOA 76.72 95.90 6.58
M8PFOA 82.68 103.35 4.87
M3PFHxS 77.67 97.09 5.21
PFOS 83.92 104.90 15.63
PFNA 76.42 95.53 2.82
M9PFNA 82.38 102.98 1.66
PFHpS 82.99 103.74 12.33
8-2 FTS 70.05 87.57 14.64
M2-8-2 FTS 74.27 92.83 3.76
N-EtFOSAA 73.15 91.44 2.87
N-MeFOSAA 79.25 99.06 2.75
PFDA 80.00 100.00 4.15
M6PFDA 76.99 96.23 2.86
d3-NMeFOSAA 73.57 91.96 6.99
M8PFOS 79.76 99.70 7.75
d5-NEtFOSAA 81.58 101.97 15.65
PFUnA 78.98 98.73 4.58
M7PFUnA 77.83 97.28 3.79
PFNS 80.60 100.75 19.61
PFDoA 76.57 95.72 4.70
M2PFDoA 74.04 92.55 2.81
PFDS 84.19 105.24 9.99
PFTriA 73.30 91.63 1.88