FTIR Reference Methods Increasing in Use
Fourier
Transform Infrared Spectroscopy (FTIR) is one of the most widely used new
techniques for measuring emissions. The FTIR technology has the capability
to measure more than 100 of
the 189 Hazardous Air Pollutants (HAPs) listed in Title III of the Clean Air
Act Amendments o
f
1990 (CAAA). It’s primary advantage over many other methods is it’s ability
to provide on-site, real-time
data to source operators. Upon passage of the CAAA, measurement methods
existed for only 40 of the HAPs. The FTIR also has the capability of
measuring multiple compounds simultaneously, thus providing an advantage
over most other measurement methods which measure only one or several HAPs.
The FTIR method can provide a distinct cost advantage since it can be used
to replace several
traditional methods.
The specific unit used by ACCI has been designed for on-site analysis in demanding applications. It incorporates an FTIR spectrum, a temperature-controlled sample cell (cell can be heated up to 190°C) and signal processing electronics. The FTIR spectrum is analyzed by software to provide a rapid accurate analysis allowing simultaneous detection, identification, and quantification of up to 50 different gas components.
It is an ideal tool to measure trace concentrations of pollutants in wet, corrosive gas streams. The USEPA has promulgated a series of FTIR Reference Methods which are in Appendix A of Part 63. They include Methods 318, 320, and 321. Continuous emissions monitoring can also be completed by FTIR for any applicable compound by following USEPA Performance Specification 15.
Typical regulatory testing applications include HCl analysis at lime and cement facilities, formaldehyde, methanol, and phenol analysis in the fiberglass industry, and methane and formaldehyde analysis at natural gas compressor stations. Given the power of the unit to characterize unknown species, an unlimited potential of other applications are possible. ACCI is ready to assist you with your FTIR applications.
Date: 06/08/04