Document B3jgrjkjGkQqV44nKJZD405J

SMMedicalDepartment . Tnoiectoiaoaytne SS av CioNnsecg. 20zEce ARG-O2MI Analytical and Research Properties - 3M Industrial Hygiene Laboratory January 1993 Scope: This is a method for the determination ofN-Ethyl Perfluorooctanesulfonamide in air. PSerfuluomroomocftaa Mneetsruhlofydo:naAmiidreiissdardaswonrbtehdroounghthseilsiiclaigcaeglels.amTplhiengprtiumbaersy. aTnhdebaNc-kEutphyl sectionsof the tubes are extracted separately with methanol. The liquid is then analyzed in a gas chromatograph with flame ionization or electron capture detector. Apparatus: 1. Silica gel sampling tubes (such as SKC #226-10 or equivalent) Available from: SKC, Inc. 334 Valley View Road Eight Four, PA 15330 2 Sampling pumps: Battery operated pumps capable ofdrawingairthrough the sample tubes at a rate of 50-500 ml/min. 3. Gas Chromatograph (such as Hewlett-Packard 5880A or equivalent) with capillary column (Restec Stabilwax 0.53 X 30 m, 1 micrometer film capillary column) and flame ionization detector (FID) or electron capture detector (ECD). ! SamplingProcedure: Sample in the employee's breathing zone ata rateof 50-500 ml/min, depending on desired lengthofsampling time. The maximum volumeof air sampled per tube should `be 30 liters. Local conditions such as very high humidity may require a smaller `volume. `The air flow through the sample tube should be as indicated bythedirectional arrow on the tube. At the endofthe sampling period, the tubes shouldbecapped with the supplied caps. 01008 Analytical and Research Properties Page 2 January 1993 Analysis: bEexterxatcrtaicotne:dsAefptaerratsealmpylwiintg,h t1hmeiproifmraeraygaenndtgbraacdkeumpetshecatnioolnisonfanthseustaompslaimngpltuivbineasglcan and shaken for 30 minutes. Analysis: Thesamples canbe injectedintothegas chromatograph (2 plinjection)and `analyzedbyFIDor ECD using a RestecStabilwax 0.53 mmID X30 m, 1micrometer film capillarycolumn.TheGCcondiwteuiseodwnerse: 125C for 2 minutes 10C/minute to 225C Hold for 10 minutes Injector Temperature: 225C FID Temperature: 225C `Under theseconditionsthe retentiontimewas 6.85 minutes. `liTmhietolofw~e0r.1quamnitcirtoatgiroanmlsimwiatswsaesen~1w0itmhicanroEgCrDam.s with an FID. A lower quantitation Recovery Study: Fpirfitmyatroy 1se0c0t0iomnisocrfosgirliacmasgoeflNs-aEmtphlyeltPuebersf.lTuhoirorotcytlainteesrsuolffopnraemcildeeawneadsaisrpiwkaesd otnhteon the passed through the sample tubes at 1.0 liter/minute. The samples were analyzed as ` described above. The regression equation for the standard material was Jugs analyte = 0.0138 analyte area - 15.3 for concentrations from 25-1000 pgs (12- 0.99). * Neethyl Perfluorooctanesulfonamide. `bBraesaekdthornotuhgihs cfarloimbrtahteiopnrciumravrey, stehcetiaovnesratogtehreecboavcekruyp9s5ec+ti1o1n%su.nTdheerrtehewacsonndiotions described above. osiraasmon 01009