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Vironex Environmental Field :ices - HRC Pagel of 5 <br /> it # <br /> 7. r xs. <br /> Click Here To Add Wironer's <br /> Website To Your Favorite List <br /> ;.x•.•. arc, ``" LXX_:_' EXPEDITED SITE ASSESSMENT (ESA) FIELD NOTE <br /> z� xxn•. s• <br /> Von" <br /> t:r 1:—"�• a:e: <br /> SENTINEL MOBILE <br /> a <br /> LABORATORIES <br /> ­:r..- & '11111111111111n%wo" <br /> Performance Enhancement of Traditional Membrane Interface Probe <br /> (MIP) Detection Using an Integrated HAPSITEQ Portable Gas <br /> Chromatograph/Mass Spectrometer (GC/MS). <br /> x..es <br /> M , Background: MIP technology has revolutionized initial site <br /> assessments and has made it possible to determine instantly the <br /> location and extent of site contaminants. MIP is a system <br /> cc. n: u. x,•fe. manufactured by Geoprobe Systems@ for the detection and <br /> measurement of Volatile Organic Compounds (VOCs) in the subsurfac( <br /> ''` t" A heated probe carrying a permeable membrane is advanced to depth <br /> in soil. VOCs in the subsurface cross the membrane, enter into a <br /> carrier gas stream, and are swept to gas phase detectors (typically <br /> FID/PID/ECD) at ground surface for measurement. In spite of these <br /> advancements, MIP technology has encountered three limitations: 1. <br /> inadequate sensitivity, 2. inability to detect methyl tert-butly ether <br /> (MTBE), 3. inability to identify individual contaminants in-situ. <br /> System Development: In order to solve these shortcomings, Sentin( <br /> Mobile Laboratories, LLC, and Vironex@, Inc. in cooperation with <br /> Geoprobe@, Inc. and INFICON& Inc. have successfully integrated the <br /> MIP and HAPSITE@ portable Mass Spectrometer, two cutting-edge ES, <br /> technologies. The resulting service allows the site investigator to gain <br /> 100 times the sensitivity of traditional in-line FID/PID/ECD detectors, <br /> to detect MTBE, and - using GC/MS National Institute of Standard and <br /> Technology (NIST) library search technology - to 100% identify <br /> contaminants in-situ. <br /> The initial work was performed at the Geoprobe@ corporate <br /> headquarter in Salina, KS. Geoprobe@ furnished technical <br /> resources/personnel, MIP equipment/probe and a direct push rig. <br /> INFICON& Inc. supplied HAPSITE® instrumentation and technical <br /> reach-back. Sentinel Mobile Laboratories, LLC and Vironex@, Inc. <br /> http://www.vironex.com/pages/support—hapsite—mip.html 1/10/2006 <br />