Assessing Unknown Odors and Chemicals
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1 Treat yourself to better rental service. Thank You for Attending Today s Webinar: Assessing Unknown Odors and Chemicals Your Host Matt DeLacluyse Operations Mgr RAECO Rents mattd@raecorents.com Featured Speaker Jim Cornish Sales and Support Officer Gasmet Technologies Inc. jim.cornish@gasmet.com Follow the Conversation #RentsWebinar
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3 Applying FTIR multi-gas measurement technology Assessing Unknown Odors and Chemicals Jim Cornish, B.Sc. Appl Chem. Gasmet Technologies
4 A. Dual Functionality of FTIR Protecting employee s Assessing exposures
5 B. Dual Functionality of FTIR Solving Air Quality Problems
6 Understanding the power of FTIR 1 gas analysis FTIR Gas Analysis using a combination of optical light measurement and a mathematical algorithm to measure many gases and their concentrations simultaneously. 1. FTIR = Fourier Transform Infrared The 25 gases can be chosen & changed from a master library (335 gases). Never needs recalibration
7 FTIR Measurement Technology IR FTIR Absorbance IR spectrum of H 2 O Two Steps Wavenumbers Beer s law: A = ε.b.c Measure all asymmetric Gas Molecules exceptions Diatomic homonuclear molecules such as O 2, N 2, H 2, Cl 2, F 2, & the noble gases (He, Ne, Ar..) & H 2 S is a very weak IR absorber 1). Interferometer modulates _ Mirror Moves_ Interferogram 2). Apply mathematics (Fourier Transform) to derive IR Spectrum IR spectrum measured 10 cycles/sec (10Hz) Internal calibration with precise laser Daily Zero calibration, no recalibration required Fast, extremely accurate measurements
8 Interferometer Gas Cell Compact Rugged Fast scanning Vibration insensitive Corrosion resistant sample cell Nickel-rhodium-gold plated
9 FTIR = Simultaneous multi-gas readings (25) asured Components DX4040 Semiconductor Application Library Calibration Range Selectivi Residual v Concentration Bar graph display Audio & Visual Alarms / gas Up to 25 gases
10 DX4040 Component Library Included with each DX4040
11 FTIR _ Sensitivity (mdl s) 1. Acrolein (0.13 ppm) 2. Acrylonitrile - (0.18 ppm) 3. Ammonia - (0.07 ppm) 4. Arsine - (0.01 ppm) 5. Benzene - (0.07 ppm) 6. Boron trichloride (0.005 ppm) 7. Carbon dioxide (< 10 ppm) 8. Carbon monoxide (0.12 ppm) 9. Carbon disulfide - (0.09 ppm) 10. Dichloromethane (0.06 ppm) 11. Ethylene oxide - (0.08 ppm) 12. Formaldehyde (0.04 ppm) 13. Hydrogen chloride (0.10 ppm) 14. Hydrogen cyanide (0.17 ppm) 15. Hydrogen fluoride (0.15 ppm) 16. Methane - (0.03 ppm) 17. Methyl mercaptan (0.21 ppm) 18. Nitrogen dioxide (0.19 ppm) 19. Nitrous oxide (0.01ppm) 20. Phosgene (0.01 ppm) 21. Phosphine (0.10 ppm) 22. Sulfur dioxide (0.02 ppm) 23. Sulfuryl fluoride (0.02 ppm) 24. Toluene (0.06 ppm) 25. Water Vapour Sub-ppm / ppb gas dependent Or select from a calibration library to create site specific gas calibration libraries
12 Solving Air Quality Issues Assessing Unknown Odors and Chemicals What if the responder has no information on the source of the gas or vapor? Time of Response is essential Utilizing full power of FTIR
13 Perform Advanced Library Search Calcmet Advanced Library Search Identification of unknown gases Red or Yellow warns user there is an Unknown gas in the sample. Next step
14 Identifying Unknown Gases The Power & Speed of FTIR! Advanced Library Search Search Reference Library, over 350+ gases Search NIST/EPA Library, over 5000 gases
15 Case Study Freon leak goes undetected at Texas University DX4040 Search results
16 Case Study : Hospital lab. staff evacuated after chemical leak Region 2 South TSRT Coordinator, was notified of a potential gas or vapor leak in the Human Pathology Laboratory at St. Joseph Hospital, MI. We were advised that the suspicion was increased levels of Formaldehyde. We ran tests in five different work areas within the lab. With the FTIR gas analyzer we were able to simultaneously test for 50 different gases/vapors using quantitative and qualitative analysis. The results of our tests revealed that the substance was Toluene and not Formaldehyde. The levels were well within safe limits of all found substances as well as TWA's [Time Weighted Averages] The FTIR Gas Analyzer performed flawlessly and proved it's capability beyond doubt. The TSRT had a successful training deployment and had many educational benefits from the experience. Bob Lovelace _ Region 2 South TSRT Coordinator
17 Operating DX4040 Calcmet Lite Simple to Use
18 FTIR Gas Analyzer : Operation Step 1) AC Power or Battery power Step 2). Warm-up no time if plugged into AC outlet ~5 mins if instrument cold Step 3). Background or zero calibration. Connect Nitrogen gas (UHP grade) Operator pushes ZERO measurement on PDA Automatically Zeroing DX4040 (takes 3 mins) No Span gas or other consumables required
19 Operation Taking measurements Gas measurements - updated each 5,20 or 60 seconds - Individual audible and visual alarm (user adjustable) - Results as text file, download via USB port, open directly into Excel spreadsheet, Tag file name. - Up to 25 gases measured simultaneously
20 Instrument Maintenance Zero gas (Nitrogen, purity 5.0 (99.999%) Low Cost of Ownership Capacity : 552L. Typical usage per zero : 10L ~ 1 year / cylinder based on weekly usage. Other gas cylinder sizes available. Easy local supply Particulate Filters Weekly visual inspection of sample probe filter (change the filter, if necessary). Anticipate filter change out for each 3 months. Set of 5 spare filters supplied No requirement to send instrument back to manufacturer for annual service
21 FTIR Validation & Certification FTIR Methodology accepted by leading test organizations including : NIOSH Method 3800 (Organic & Inorganic gases by extractive FTIR spectrometry) USEPA Method 320 ASTM Method D6348 TUV & MCERTS 3 rd party verification
22 Benefits of FTIR Assessing Unknown Odors and Chemicals Fast response & direct reading to ~350 chemicals 25 gases measured simultaneously available to the use in a just minutes from start-up. Identify Unkown Gases Software quickly searches over 5,000 gases for positive id of toxic gases Ease of Use - Allows multiple users to be trained resulting in effective usage of the equipment Validation of results Laboratory Accuracy in the field NIOSH approved method, spectra (tamperproof) Low Cost of Ownership [ No water removal, no sample preparation, no carrier gases, no calibration gases (internal calibration using laser)] Sidestep equipment redundancy Add new gases to library as testing requirements expand ( current)
23 Thank you for this opportunity to present the FTIR Multi-Gas measurement technology Questions??? 30 January 2006 Gasmet CEM
24 Treat yourself to better rental service. Get Social with RAECO blog.raecorents.com
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