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Click Here ! Air Compliance Testing, Inc.
"Air Compliance Testing, Inc. Now Offers FTIR"
Monday, January 29, 2007 at 13:40:20

Cleveland, Ohio January 29, 2007 -- Commonly referred to as FTIR, Fourier Transform Infrared Spectroscopy is the most recent addition to the Air Compliance Testing technological toolbox.

FTIR can be used to identify chemicals from paints, polymers, coatings, spills, drugs, and contaminants (qualitative analysis). FTIR is likely the most powerful tool for identifying types of chemical bonds (functional groups). The wavelength of light absorbed is characteristic of the chemical bond as can be seen in this annotated spectrum. Because the strength of the absorption is proportional to the concentration, FTIR can also be used for some quantitative analyses.

FTIR Applications include:

- EPA Method 318: Extractive FTIR Method for the Measurement of Emissions from the Mineral Wool and Wool Fiberglass Industries
- EPA Method 320: Measurement of Vapor Phase Organic and Inorganic Emissions by Extractive Fourier Transform Infrared (FTIR) Spectroscopy
- EPA Method 321: Measurement of Gaseous Hydrogen Chloride Emissions At Portland Cement Kilns by Fourier Transform Infrared (FTIR) Spectroscopy
- Identifying gas stream organic compounds and many inorganic compounds
- Chemical process monitoring and optimization
- On-line process monitoring
- Measuring moisture in corrosive gases
- Reaction end point determinations
- Measuring catalyst efficiency
- Control equipment optimization
- Real time speciated VOC emission analysis
- Indoor air monitoring of VOC`s and semi-volatiles at very low levels
- Blending processes optimization

By now you re probably wondering how FTIR works: Because chemical bonds absorb infrared energy at specific frequencies (or wavelengths), the basic structure of compounds can be determined by the spectral locations of their IR absorptions. The plot of a compound`s IR transmission vs. frequency is its `fingerprint` that can be compared to reference spectra to identify the material. FTIR spectrometers offer speed and sensitivity impossible to achieve with older wavelength-dispersive instruments. This capability allows rapid analysis of micro-samples down to the nanogram level is some cases, making the FTIR unmatched as a problem-solving tool in organic analysis.

Fourier transform infrared spectroscopy is preferred over dispersive or filter methods of infrared spectral analysis for several reasons:

- It is non-destructive
- Solids, liquids and gases can all be sampled.
- It provides a precise measurement without external calibration
- It is fast. Most measurements by FTIR are made in a matter of seconds rather than several minutes.
- It is mechanical simple. The mirror in the interferometer is the only continuously moving part in the instrument.
- Sensitivity is dramatically improved with TIR. The detectors employed are more sensitive and the optical throughput is higher. This results in lower noise levels, and the fast scans enable the coaddition of several scans in order to reduce the random measurement noise to any desired level.
- The instruments are self-calibrating.

Contact us at 1-800 EPA-AIR1 (800-372-2471) to see how we can apply this incredible diagnostic tool to your process improvement or problem.


Web Address: www.aircomp.com
Contact: Phil Billick
Phone: 800-372-2471
email: phil@aircomp.com




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