Document 2J0Qpjb9MQEdMXdq4VqDvNjw7

AR226-2397 Polymer Products Department cc: Research & Development Division Experimental Station CONFIDENTIAL M. A. Kaiser S. R. Laas PRAL File I.C. - 256 - 256 - 256 - 323 ANALYTICAL REPORT To: A. J. Playtis - PPD, Washington Works m yOFrom: \ m . J. Vilone - PPD, ESL 269/214 PPD August 31, 1988 s t r 16 1388 HJtPR. BTATIOH iheq cehitr PERFLUOROOCTANOATE (C8) IN WATER (Job No. 880-514; PRAL Nos. 88-6271 - 6276, N.B. E27585) At your request, six samples 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 * 0.688 x ppb perfluorooctanoate. The results are given for four of the samples in the attached Table I. Two of the samples were too high in C0 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. 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, derivatized, and analyzed in duplicate. The results are given for these two samples in the attached Table II. gmn Attachments SIQOQM-'ST EID136026 CONFIDENTIAL TABLE 1 i PBAL No. Designation n g . F / g ^ O (ppb) RSP 88-6273 88-6274 88-6275 88-6276 Well #27 Lubeck Little Hocking B212 1.0 1.5 N.D.* N.D. 15 8 *N.D. = none detected; detection limit - 0.6 ppb PBAL No. 88-6271 88-6272 TABLE II Designation ug.F/qH.,0 (ppm) Letart Upper Pond Letart Lower Pond 1.1 1.6 RSP 13 11 I JRW000016 EID136027