Document 93XoV0QoqxMRnq5Oa6ErdVy8V

AR226-1391 6A f t Z A - 1291 7 - 4 1 (CUPONI) E . I. du Pont de N e m o u r s & C o m p a n y iMcao^offATco W il m in g t o n . De l a w a r e 19898 POLYMER PRODUCTS DEPARTMENT X M f M T * L STATION PERSONAL AND COKFIDLKTIAL A. j . Dahl B. w . llarrh L J f Papa Pral File T .C - - 353 - r.uioo - 29 October 20, 198I TC: DR. Y. L. POWER - PPD, Parkersburg FROM: S. S. STAFFORD ANALYSIS OF BLOOD SAMPLES FOR PERFLUGROOCTAHOATE (Job Kc. 810-573; PRAL Jos. 81-^363-^386; _______ Notebook Kos. E2251**.E26238,27^32)_____ As requested in your letter of 9/22/31 to L. J. Papa, the 2h blood samples submitted then have been analyzed for perfluorooctanoate (Cg) by the usual gas chromatographic method ZS-567. Results and sample identification are giver, in the attached table. Attachment Jah Key Words: Perfluorooctanoat e GC Blood Analysis 000176 EID713278 TABLE I CONCENTRATION OF PEHFLL'OROOCTANOATE IN' BLOOD (a) Sample ___________________________________ PRAL_ No. Date Sampled P.R.No. Name 31-L363 8l-l*36U 8l-l*3o5 81-1*366' 61-1*367 81-1-368 8 1 -1*369 81-U370 81-1*371 81-1*372 81-1*373 ol-l*37U 81-1*375 81-1*376 81-1*377 81-1*378 31-1*379 61-1*380 61-1*381 61-1*382 81-1*383 81-1*381* 6 1 -U38 5 81-1*366 9/6/81 9 /8 /8 1 9/8/81 9/9/61 9/9/31 9/9/81 9/9/81 9/10/81 9/1 0 /8 1 9/1 0 /6 1 9/1 1 /6 1 9/11/&I 9/lb/Sl 9/lL/Sl 9/15/61 9/15/8-1 9/16/21 9/16/81 9/16/81 9/17/81 9/17/81 9/18/61 9/20/61 9/20/51 REDACTED a GC Analysis___________ Date Analyzed [Ca ], ug ~F/g bl 10/5/81 10/2/61 ' 10/2/ei 10/2/81 /1 0 5 / 8 1 10/2/81 /1 0 5 / 8 1 10/8/81 10/5 & 10/6/81 /1 0 5 / 8 1 10/5/81 /1 0 5 / 8 1 1 0 / 5 4 10/6/81 10/6/ei 10/9/81 10/8/61 10/8/cl 10/8/81 10/6/81 10/8/81 10/11/81 10/8/81 10/6/61 10/6/81 2.6 O.032 0.26 G.ll 2.0 C .**1 0.36 0.15 1.5 0.21 0.090 0.26 0.33 0.33 2 .6 0 .0 7 1 -j 0.11 C.Oc? 0.2Z 6 .5 0.01*2 l.C .0 1 - 3 (a) Analysis as described in Lab Method ES-567 ("Determination of Perfluorooctanoic Acid in Blood, Gas Chromatographic Method", S. Stafford, k/3/ol), using the packed column GC analysis vith perfluorc-n-octanoic acid as calibration standard. (b) Although the analysis is specifically for perfluorooctanoate (acid or salts), concentrations are given in ppm fluorine for comparison vith the results of total organic fluorine analyses. (ppm F = 0.668 x ppm perfluorooctanoic acid) Estimated uncertainty is _+ 10a relative standard deviation. The lover lir.it for ouantitatioi: is 0.007 Pe^/g. The detection limit is **. 0.00** UgF/f, out concentrations in that range cannot be veil quantitated and are reported as < 0.007- Kone detected (n.d.) is reported for samples with [Cg] ^ 0.001* ppm, vhich cannot be distinguished from reagent background. 000 17 7 EID713279