ASTM D6348-03
Standard Test Method for Determination of Gaseous Compounds by Extractive Direct Interface Fourier Transform Infrared (FTIR) Spectroscopy

Standard No.

ASTM D6348-03

Release Date

2003

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D6348-03(2010)

Latest

ASTM D6348-12(2020)

Scope

The FTIR measurements provide for multicomponent on-site analysis of source effluent.

This test method provides the volume concentration of detected analytes. Converting the volume concentration to a mass emission rate using a particular compoundrsquo;molecular weight, and the effluent volumetric flow rate, temperature and pressure is useful for determining the impact of that compound to the atmosphere.

Known concentrations of target analytes are spiked into the effluent to evaluate the sampling and analytical systemrsquo;effectiveness for transport and quantification of the target analytes, and to ensure that the data collected are meaningful.

The FTIR measurement data are used to evaluate process conditions, emissions control devices, and for determining compliance with emission standards or other applicable permits.

Data quality objectives for each specific testing program must be specified and outlined in a test plan (Annex A1). Supporting data are available from ASTM Headquarters Request RR: D22–1027.

1.1 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.

1.2 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.

1.3 This field test method 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 (see for test plan requirements).

1.4 The FTIR instrument range should be sufficient to measure from high ppm(v) to ppb(v) and may be extended to higher or lower concentrations using any or all of the following procedures:

1.4.1 The gas absorption cell path length may be either increased or decreased,

1.4.2 The sample conditioning system may be modified to reduce the water vapor, CO₂, and other interfering compounds to levels that allow for quantification of the target compound(s), and

1.4.3 The analytical algorithm may be modified such that interfering absorbance bands are minimized or stronger/weaker absorbance bands are employed for the target analytes.

1.5 The practical minimum detectable concentration is instrument, compound, and interference specific (see Annex A2 for procedures to estimate the achievable minimum detectable concentrations (MDCs)). The actual sensitivity of the FTIR measurement system for the individual target analytes depends upon the following:

1.5.1 The specific infrared absorptivity (signal) and wavelength analysis region for each target analyte,

1.5.2 The amount of instrument noise (see Annex A6), and

1.5.3 The concentration of interfering compounds in the sample gas (in particular, percent moisture and CO₂), and the amount of spectral overlap imparted by these compounds in the wavelength region(s) used for the quantification of the target analytes.

1.5.4 Any sampling system interferences such as adsorption or outgassing.

1.6 Practices E 168 and E 1252 are suggested for additional reading.

1.7 This ......

ASTM D6348-03 Referenced Document

• ASTM D1356 Standard Terminology Relating to Sampling and Analysis of Atmospheres*， 2024-04-19 Update
• ASTM D3195 Standard Practice for Rotameter Calibration
• ASTM E1252 Standard Practice for General Techniques for Obtaining Infrared Spectra for Qualitative Analysis
• ASTM E168 Standard Practices for General Techniques of Infrared Quantitative Analysis

ASTM D6348-03 history

• 2020 ASTM D6348-12(2020) Standard Test Method for Determination of Gaseous Compounds by Extractive Direct Interface Fourier Transform Infrared (FTIR) Spectroscopy
• 2012 ASTM D6348-12e1 Standard Test Method for Determination of Gaseous Compounds by Extractive Direct Interface Fourier Transform Infrared 40;FTIR41; Spectroscopy
• 2012 ASTM D6348-12 Standard Test Method for Determination of Gaseous Compounds by Extractive Direct Interface Fourier Transform Infrared (FTIR) Spectroscopy
• 2003 ASTM D6348-03(2010) Standard Test Method for Determination of Gaseous Compounds by Extractive Direct Interface Fourier Transform Infrared (FTIR) Spectroscopy
• 2003 ASTM D6348-03 Standard Test Method for Determination of Gaseous Compounds by Extractive Direct Interface Fourier Transform Infrared (FTIR) Spectroscopy
• 1998 ASTM D6348-98 Standard Test Method for Determination of Gaseous Compounds by Extractive Direct Interface Fourier Transform Infrared (FTIR) Spectroscopy