Introduction to Extractive Fourier Transform Infrared (FTIR) Spectrometry and Test MethodsDr. Grant Plummer, PhD, Enthalpy Analytics, Inc.

Workshop Description: This course will explain Standard Test Methods for Determination of Gaseous Compounds by Extractive Direct Interface Fourier Transform Infrared (FTIR) Spectroscopy, including US EPA’s Stack Testing Method 320, “Vapor Phase Organic & Inorganic Emissions by Extractive FTIR.” FTIR measurement data are used to evaluate process conditions, emissions control devices, and for determining compliance with emission standards or other applicable permits.

This field test method employs an extractive sampling system to direct stationary source effluent to an FTIR spectrometer for the identification and quantification of gaseous compounds. This test method is potentially applicable for the determination of compounds that (1) have sufficient vapor pressure to be transported to the FTIR spectrometer and (2) absorb a sufficient amount of infrared radiation to be detected.

This field test method provides near real time analysis of extracted gas samples from stationary sources. Gas streams with high moisture content may require conditioning to minimize the excessive spectral absorption features imposed by water vapor. This method also requires the preparation of a source specific field test plan. The test plan must include the following: (1) the identification of the specific target analytes (2) the known analytical interferents specific to the test facility source effluent (3) the test data quality necessary to meet the specific test requirements and (4) the results obtained from the laboratory testing. AGENDA

Target Audience: State and local agency staff from MARAMA member agencies that conduct or observe emissions source tests in order to quantify emissions and assess compliance with local, state, and federal requirements.