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VOC recovery was also acceptable. Teflon tubing showed very good performance in Measurements. In Proceedings;Air and Waste Management Association's Vapor
<br /> terms of both background contribution and sample recovery,even at very low initial Intrusion Symposium:The Next Great Environmental Challenge-An Update.
<br /> VOC concentrations. The only detection of significance for Teflon°tubing was the non- September 13-15,2006,Los Angeles,CA. Pages 69-83.
<br /> target compound 1,1-difluoroethane with an average concentration of 5.0 ppbv(0.0135
<br /> pg/L)in 67%of the test run samples. Its presence is likely due to the structure of the Kelly,T.J.,and M.W.Holdren. 1995.Applicability of Canisters for Sample Storage in
<br /> tubing itself,as Teflon is a fluorinated ethylene polymer. Determination of Hazardous Air Pollutants.Atmospheric Environment Vol.29,No.19.
<br /> L-D PE exhibited the lowest overall performance,displaying very poor recovery for a Nicholson,P.,D.Bertrand,and T.McClary. 2007. Soil Gas Sampling in Low-
<br /> wide number of target analytes(Hayes,2006). Recovery decreased with decreasing Permeability Soils. In Proceedings;Air and Waste Management Association's Vapor
<br /> vapor pressure. Unexpectedly high concentrations of certain heavier hydrocarbons Intrusion;Learning for the Challenges. September 26-28,2007,Providence, RI
<br /> were observed in the samples,contributing to artificially high recoveries for some Pages 299-310.
<br /> analytes due to co-elution.
<br /> Oliver, K.D.,and J.D.Pleil.1986.Sample Integrity of Trace Level Volatile Organic
<br /> The following table summarizes the results of several studies Compounds in Ambient Air Stored in SUMMA®Polished Canisters. 1986. Atmospheric
<br /> Environment:Vol.20.No.7.
<br /> Table E-1: Tubing Type Study Results
<br /> Stud a 1. Ouellette,G. 2004. Soil Vapor Sampling and Analysis-Lessons Learned. Presented
<br /> Tubing Type Hayes et al. Nicholson et al. at the Department of Energy/Petroleum Environmental Research Forum Soil Vapor
<br /> Ouellette(2005) 2006 2007 Workshop. Brea,California:January 27-29.2004.
<br /> Polyethylene Sorption of Sorption of Sin,D.W.,Y.Wong,W,Sham,and D.Wang. 2001.Development of an analytical
<br /> hexane and numerous N/A technique and stability evaluation of 143 C3-C12 volatile organic compounds in SUMMA®
<br /> pentane compounds canisters by gas chromatography-malts spectrometry.Royal Society of Chemistry 126,
<br /> Tygon Sorption of 310-321 DO1:10.1039/b008746g µv
<br /> hexane and N/A N/A
<br /> pentane USEPA,1999:United States Environmental Protection Agency.Compendium of
<br /> NylaFlow Sorption of Sorption of Methods for the Determination of Toxic Organic Compounds in Ambient Air,Second
<br /> Acceptable 9 P
<br /> naphthalene aromatics Edition,Compendium Method TO-15 Determination of Volatile Organic Compounds
<br /> Teflon Acceptable Acceptable N/A (VOCs)In Air Collected In Specially Prepared Canisters And Analyzed by Gas
<br /> Vinyl Sorption of Chromatography/Mass Spectrometry(GC/MS).
<br /> hexane and N/A N/A
<br /> entane USEPA,2003.United States Environmental Protection Agency. Analysis of Volatile
<br /> PEEK N/A Acceptable N/A Organic Compound(VOCs)in Air Collected in Specially Prepared Canisters or Tedlar
<br /> Bags. U.S EPA Region 9 Laboratory,Richmond,California. Standard Operating
<br /> Procedure#310.
<br /> References: htto://www.prggscott.edu/users/oherring/downloads/JATAP%20QAPP%20Files/Appendix
<br /> %20M1%20EPA%20R9%20SOP%20310.Ddf
<br /> Bontempo,W.,N.Shafer,D.Page,and L.Freeman.2004.Evaluation of SUMMA®
<br /> Polished Canisters,Silonite,and Silcosteel Treated Canisters for Collection and Storage Wang,Y.,S.Raihaia,A.P.Jackman,R.St.John.1996.Use of Tedlar bags in VOC
<br /> of Volatile Organics at the Parts per Trillion Levels.Paper#72. testing and storage:evidence of significant VOC losses. Environmental Science&
<br /> Brymer,D.A.,Ogle,L.D.,C.J.Jones,and D.L.Lewis.1996.Viability of Using SUMMA
<br /> • Technology,30:3115-3117
<br /> Polished Canisters for the Collection And Storage of Parts per Billion by Volume Level
<br /> Volatile Organics.Environmental Science and Technology.Vol.30,No.1.
<br /> Hayes,H.,N.Khan,and D.Benton. 2006. Impact of Sampling Media on Soil Gas
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