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ASTM International - ASTM D6420-99(2004)

Standard Test Method for Determination of Gaseous Organic Compounds by Direct Interface Gas Chromatography-Mass Spectrometry

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Organization: ASTM International
Publication Date: 1 October 2004
Status: inactive
Page Count: 7
ICS Code (Physicochemical methods of analysis): 71.040.50
significance And Use:

This field test method determines the mass concentration of VOHAPs (or any subset) listed in Section 1.

Multiplying the mass concentration by the effluent volumetric flow rate (see 2.2)... View More

scope:

1.1 This test method employs a direct interface gas chromatograph/mass spectrometer (GCMS) to identify and quantify the 36 volatile organic compounds (or sub-set of these compounds) listed as follows. The individual Chemical Abstract Service (CAS) numbers are listed after each compound.

Benzene-71432Methylene chloride-75092
Bromodichloromethane-752741,1,2,2-Tetrachloroethane-79349
Carbon disulfide-751501,1,1-Trichloroethane-71556
Chloroform-676631,1,2-Trichloroethane-79005
Methyl iso-Butyl ketone-108101p-Xylene-106423
Styrene-100425Bromomethane-74839
Tetrachloroethylene-127184Carbon tetrachloride-56235
Toluene-108883Chlorobenzene-108907
Bromoform-75252c-1,3-Dichloropropene-10061015
Vinyl acetate-1080541,2-Dichloroethane-156592
Vinyl chloride-750141,1-Dichloroethene-75354
Chloromethane-74873t-1,2-Dichloroethene-156605
cis-1,2-Dichloroethene-156592Methyl ethyl ketone-78933
Dibromochloromethane-1244812-Hexanone-591786
1,1-Dichloroethane-107062t-1,3-Dichloropropene-542756
1,2-Dichloropropane-78875Trichloroethene-79016
Ethylbenzene-100414m-Xylene-108383
Ethyl chloride-75003o-Xylene-95476

1.2 The test method incorporates a performance-based approach, which validates each GCMS analysis by placing boundaries on the instrument response to gaseous internal standards and their specific mass spectral relative abundance. Using this approach, the test method may be extended to analyze other compounds.

1.3 The test method provides on-site analysis of extracted, unconditioned, and unsaturated (at the instrument) gas samples from stationary sources. Gas streams with high moisture content may require conditioning to prevent moisture condensation within the instrument. For these samples, quality assurance (QA) requirements are provided in the test method to validate the analysis of polar, water-soluble compounds.

1.4 The instrument range should be sufficient to measure the listed volatile organic compounds from 150 ppb(v) to 100 ppm(v), using a full scan operation (between 45 and 300 atomic mass units). The range may be extended to higher or lower concentrations using either of the following procedures:

1.4.1 The initial three-point calibration concentrations and the continuing calibration checks are adjusted to match the stack concentrations, or

1.4.2 The three-point calibration is extended to include additional concentrations to cover the measurement range.

1.5 The minimum quantification level is 50 % of the lowest calibration concentration. Responses below this level are considered to be estimated concentrations, unless a calibration standard check is conducted at a lower concentration to demonstrate linearity. The sensitivity of the GCMS measurement system for the individual target analytes depends upon:

1.5.1 The specific instrument response for each target analyte and the number of mass spectral quantification ions available.

1.5.2 The amount of instrument noise, and

1.5.3 The percent moisture content of the sample gas.

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Additional safety precautions are described in Section .

Document History

November 1, 2018
Standard Test Method for Determination of Gaseous Organic Compounds by Direct Interface Gas Chromatography-Mass Spectrometry
1.1 This test method employs a direct interface gas chromatograph/mass spectrometer (GCMS) to identify and quantify the 36 volatile organic compounds (or sub-set of these compounds) listed as...
October 1, 2010
Standard Test Method for Determination of Gaseous Organic Compounds by Direct Interface Gas Chromatography-Mass Spectrometry
This field test method determines the mass concentration of VOHAPs (or any subset) listed in Section 1. Multiplying the mass concentration by the effluent volumetric flow rate (see 2.2) yields mass...
ASTM D6420-99(2004)
October 1, 2004
Standard Test Method for Determination of Gaseous Organic Compounds by Direct Interface Gas Chromatography-Mass Spectrometry
1.1 This test method employs a direct interface gas chromatograph/mass spectrometer (GCMS) to identify and quantify the 36 volatile organic compounds (or sub-set of these compounds) listed as...
May 10, 1999
Standard Test Method for Determination of Gaseous Organic Compounds by Direct Interface Gas Chromatography-Mass Spectrometry
1.1 This test method employs a direct interface gas chromatograph/mass spectrometer (GCMS) to identify and quantify the 36 volatile organic compounds (or sub-set of these compounds). The individual...
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