Document 2Rpg7EmQN1znOywd0OGXbRNG6

AR226-2391 Polymer Products Department _ Research & Development Division Experimental Station M. A. Kaiser S. R. Laas M. Lombarski B. S. Shepard G. J. Sloan PRAL File I.C. - 256 - 256 t, - 269 - 323 - 323 - 256 - 323 ANALYTICAL REPORT May 7, 1987 To: A. J. Playtis - PPDr Washington Works From: M. J. Vilone and R. M. Vasta - PPD, ESL 269 --yn f iiT 6W PERFLTOROQCTANQATE (C8) IN WATER (Job No. 870-441; PRAL Nos. 87-2933 - 2937, Notebook No. E44875) Five samples of water have been analyzed for perfluorooctanoate (C8) by electron capture gas chromatography. Method ES-567 was used with the following modifications: sample size was 10 g; lyophilization was -18-20 hours; concentration of perfluorodecanoate internal standard^was decreased 10 fold. Spiked standards at concentrations of 0.4, 0.5, 0.8, 1.0 and 1.9 ppb were examined. A reproducible detectable peak was observed for 0.4 ppbjmd we have used this as our detection limit. No C8 peak was detected m the spiked standards < 4 ppb. For the quantitation we had linear calibration curves over therange of o!I to 1.9 ppb. The samples were freeze dried, derivitized, and analyzed in duplicate. The results are expressed as ppb fluoride where ppb F = 0.688 x ppb perfluorooctanoate. The results are given in the attached table, If you have any questions, don't hesitate to call. gmn Attachment Keywords: GC Perfluorooctanoate Water RJZ009209 EID079092 ir PRAL 87-2933 87-2934 87-2935 87-2936 87-2937 V Perfluorooctanoate in Water Desiqnation ngF/g. HnO (ppb) #1 #2 #3 #4 ' #5 n.d. ^ /-O 1.3 l - ) n.d. n.d. " n.d. = none detected; detection limit = 0.4 ppb RJZ009210 EID079093