Laserfiche WebLink
I <br /> 1 <br />' ANALYTICAL METHODOLOGY <br /> BTX - Method 8280 <br />' WATER - <br /> 5 ml sample volume is purged on a Tekmar LSC-2/ALS purge and <br /> trap system with Helium. The purged sample is analyzed on a <br /> Varian 3400 GC equipped with a Photo Ionization Detector and a <br /> Flame Ionization Detector (PID/FID) . A Bentone packed column is <br />' used to separate compounds. <br /> SOIL - <br /> i 4 grams of soil are weighed into a 40 ml QA/QC prepped VOA <br /> vial . Soils received in brass core tubes are sampled by discarding <br /> 1 - 2 inches of soil from each end of the tubes. (This is done <br /> to reduce the possibility of analyzing a portion of soil that has <br /> been exposed to possible sampling technique contamination) . 2 <br /> grams of soil are then removed from each end of the tube and <br /> combined in the 40 ml VOA vial . Soil in jars or bags is aliquoted <br /> with a similar technique which discards exposed sample surfaces. <br /> 10 ml of methanol are added to the soil and the soil is shaken <br /> with the solvent. 100 ul of the extract is infected into 5 ml <br /> of laboratory blank water and then analyzed by the same technique <br /> as a water sample. <br /> 1 <br /> i <br /> CHEMWEST ANALYTICAL LABORATORIES INC <br />