Document yr8doyXKJjQbzjBooKM9VmDN6

310 Form -8747-11-A TECHNICAL REPORT SUMMARY TO: TECH N ICA L COMMUNICATIONS CEN TER - 201-2CN (Im portant -- I f report Is printed on both sides o f paper, send two copies to TC C .i Olvition . Environmental Laboratory (EE 2t PC) Project Fate of Fluorocheraicals Raport Titla Analytical Methodology and Support To D. L. Bacon Author(t) Arthur Mendel Notebook Reference 41947, 44191, 46269, 47703, 48277, 49400 s e c u r it y ^ " ^ Opm Q Ooud . (Company Confidential) (Spatial Authorization) KEYW ORDS: (Salact tarms from 3M Thesaurue. Suggest othar applicabla terms.) CURRENT O BJECTIVE: Progress Report 3M CHEM ICAL w REG ISTRY ^ . EE & PC-Div. Fluoro chemicals la [ 1/17/79 AIWO360 k e p t Numbar 0535 Project Number 9970612643 port Numbar .008 Employee Numbarii) 043939 No. of rages Including Covarinaat 22 New Chemicali Reportad Yes B No REPORT ABSTRACT: (200-250 words) This abstract information is distributed by the Technical Communications Center alert 3M'ers to Company R&D. It is Company confidential material. r ' At. <f, - -V - Information Liaison J Initials: ' 3M CO N FID EN TIAL 006417 - 11- FM 3422 Sorption onto Soil (46269-50) Sorption-desorption soil studies were conducted by S . K. Welsh, and the results are given in Table 2. Soil TLC (48277-30) Various types of soil were ground and sieved, and that fraction of 262 micron size was saved for TLC studies (42669-42). An intimate mixture of 150 g of 262 micron size greenhouse soil (sandy loam) with 80 ml of water was well slurried and spread onto 10 x 20 cm glass plates using an in-house designed spreader (designed by J. W. Belisle, A. Mendel, and G. Guthrie). The plates were allowed to air dry. A plate was spotted 2 cm from the bottom with radiolabeled-FC-95,-FC-143, and-FM 3422. The samples were those used earlier for water solubility studies. The plate was air-dried and developed 100 mm from the original spot in the ascending mode with water in a filter paper-lined TLC developing tank previously equilibrated with water for one day. The development required nearly two hours and the air-dried plate was then autorad:ographed (13). results showed that FC-143 and FM 3422 did not leave the origin (R,,=0). The spot, due to FC-95, was extremely faint for visualization but appears not to have migrated either (Rf=0). Preliminary Studies on Samples from Bionomics Labs A. Examination of Foil-lined Caps for Interferences (46269-50) Four foil-lined caps which Bionomics Labs uses to seal bottles containing samples were screwed onto four clean bottles containing 25 ml of deionized water. The bottles were mechanically shaken for 4 hours, and the combined .100 ml of water was extracted with ethyl acetate. This extract was concentrated and chromatographed. No apparent inter ference for FM 3422 was noted. This extract was then spiked with FM 3422 to confirm no interference at the retention time of FM 3422. B. Examination of Standards and Controls Prepared at Bionomics Lab Personnel from Bionomics Labs prepared standard solutions of FM 3422 in water, then submitted one-liter samples of these standards and controls to us for analyses. The respective sample was extracted with ethyl acetate and the organic extract was concentrated to 10 ml. An aliquot was used then for GC analyses, and the results are summarized in Table 3 (Notebook 46269-50). 006418 Table 3 Analyses for FM 3422 (in ppb) in Bionomics Samples Sample I.D. A5609 A5610 A5611 A5612 A5613 A5614 A5615 A5616 A5617 A5618 A5619 A5620 A5621 Theoretical Cone. (PPb) 20 20 10 10 5 5 ' 2.5 ._ 2.5 1.25 1.25 * Control A Control B Solvent Control A Determined 20.8; 19.8 19.8; 20.6 10.2; 9.9 9.7; 10.1 5.2; 5.2 4.8; 5.1 2.5; .2.6 1.2; 1.3 (a) (a) <0.1 <0.1 <0.1 A5622 Solvent Control B <0.1 A5670 A5670 1.25 1.25 1.1; 1.0(b) 1.0; 1.6(b) (a) received broken in shipment; (b) replaces original samples A5617; A5618 006419