Table T12. GC analysis of PFT contamination, Hole 1268A.
Standard PFT curve
Samples
Dilution
(vol:vol)
PFT
(g)
Peak area
(counts)
Log
(PFT)
Log (area counts)
Location
Peak area
(counts)
Log
(PFT)
Log (area counts)
1 x 10–2 8.8 x 10–7 5.62 x 107 –2 7.75 Exterior 1 101,000 –4.5 5.00
1 x 10–3 8.8 x 10–8 9.53 x 106 –3 6.98 Interior 1 5,334 –5.7 3.73
1 x 10–5 8.8 x 10–10 6.31 x 104 –5 4.80 Interior 2 7,803 –5.5 3.89
1 x 10–7 8.8 x 10–12 85.81 –7 1.93 Interior 3 740 –6.4 2.87
1 x 10–9 8.8 x 10–14 8.83 x 104 –9 4.95 Interior 4 1,899 –6 3.28

Notes: GC = gas chromatography. PFT = perfluorocarbon tracer. Sample from Section 209-1268A-2R-1 (Piece 7B) run on 24 May 2003.