Laserfiche WebLink
10-28-1993 14'30 303 490 1522 ATT FT COLLINS P.04 <br /> ATI SOP 627FC <br /> :7 Revision 0 <br /> Revised 02/24/92 <br /> Page 3 of 3 <br /> 4. 1. 6 Add another 20 mL of Freon. <br /> 4 .1.7 Place test tubas in racks and put on the <br /> rotator. Rotate for 45 minutes. <br /> 4 . 1.8 Allow soil to settle and pipette an aliquot of <br /> the extract into a glass vial with a teflon <br /> lined cap. Submit for IR analysis. <br /> 4.2 Waters= <br />' 4.2. 1 Set up long stem champagne funnels, insert <br /> filter paper and add 2 to 3 grams of Na2SO,,. <br /> Rinse with frson and discard rinsate. <br /> 4.2.2 Add 500 mL of sample to pre-rinsed separatory <br /> funnel. <br />' 4.2.3 Acidify with 3.0 mL 1:1 HCI to pH < 2 . <br /> 4 .2.4 Spike MS and CPR with .5 mL of matrix spike <br /> solution. <br /> 4 .2. 5 Add 7 to 8 mL frson. <br /> 4.2.6 Cap funnel and shake moderately, venting once, <br /> for two minutes. <br /> 4.2 .7 Drain frson layer through N%SOe into a 25 zL <br /> volumetric flask. <br /> 4.2 .8 Repeat Steps 4 . 2. 5 to 4.2.7 twice more than <br /> rinse the Na2SO4 with frson to bring to volume. <br /> 4 .2.9 Add 2 to 3 grams of silica gel. <br /> 4.2. 10 Cap volumetric and swirl to expose extract to <br /> silica gel. <br /> 4 .2. 11 Allow silica gal to settle and pipette an <br /> aliquot of the extract into a glass vial with a <br /> teflon lined screw-cap. Submit for IR <br /> analysis. <br /> 5.0 Ra?ERElfCRB <br /> 5.1 Standard Methods, 17th Edition. <br /> 6.2 Method $5300 <br /> i <br />