Document aBRVEVQxQg1B9o4w387mBK9YR

DownloadRandom document
AR226-2397 B(^ polymer Products Department Research & Development Division Experimental Station cc: M. A. Kaiser S. R. Laas PRAL Pile CONFlDENm . _- ---- R Iv.Cr*. - 256 - 256 - 256 - ^32113 ANALYTICAL REPORT PPD August 31, 1988 SLr- 16 1388 To: A. J. Playtis ' - PPD, Washington Works From: \WM. l^J.OVilone - PPD. ESL 269/214 W^ BTATlOtt 1MEO CEMIBl PERFLUOROOCTANQATE (C8) IN MATER (Job No. 880-514; PRAL Nos. 88-6271 - 6276, N.B. E27585) At your request, six sanples of water were analyzed for perfluorooctanoate (C8) by electron capture gas chromatography. Method E-567 was used with the following modifications: sample size was 10 g; lyophilization time was -18-20 hours; concentration of perfluorodecanoate internal standard was decreased 10 fold- Spiked standards at concentrations of 0.4, 0-6, 0.8, 1.0, 2.0, and 2.5 ppb were examined. A reproducible detectable peak was observed for 0.6 ppb, and we used this as our detection limit. For the quantitation we had linear calibration curves over the range of 0.6 to 2.5 ppb. The samples were freeze dried, derivatized, and analyzed in duplicate. The results are expressed as ppb fluoride where ppb F c 0.688 x ppb perfluorooctanoate. The results are given for four of the sanples in the attached Table I. Two of the sanples were too high in C8 to use the 0.6 to 2.5 ppb calibration curve and had to be reweighed using a 1 gram sample size, lyophilization time of 4-5 hrs; concentration of perfluorodecanoate internal standard was not decreased. II. Spiked standards at concentrations of 0.2, 0.5, 0.7, 1.0, 1.3, and ,_. 1.5 ppm were prepared and for quantitation we had a linear calibration curve over the range of 0.5 to 1.5 ppm. These samples were freeze dried, 5" ^ derivatized, and analyzed in duplicate. The results are given for these two samples in the attached Table ^ u girm Attachments EID136026 PBALNO. 88-6273 88-6274 88-6275 88-6276 CONFIDEHTIM- TABLE I Designation nqjTaH^OjpDb) BSD Well 27 1.0 15 8 Lubeck 1-3 Little Hocking B212 M.D.* N.D. *N.D. none detected; detection limit - 0.6 ppb ppALNo. 88-6271 88-6272 TABLE II Designation uq.F/gH,0 (ppm) Letart UDper Pond 1.1 Lekart Lower Pond l.b 30 13 EID136027