ASTM D5790-95(2001)
(Test Method)Standard Test Method for Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry
Standard Test Method for Measurement of Purgeable Organic Compounds in Water by Capillary Column Gas Chromatography/Mass Spectrometry
SCOPE
1.1 This test method covers the identification and simultaneous measurement of purgeable volatile organic compounds. It has been validated for treated drinking water, wastewater, and ground water. This test method is not limited to these particular aqueous matrices; however, the applicability of this test method to other aqueous matrices must be demonstrated.
1.2 This test method is applicable to a wide range of organic compounds that have sufficiently high volatility and low water solubility to be efficiently removed from water samples using purge and trap procedures. Table 1 lists the compounds that have been validated for this test method. This test method is not limited to the compounds listed in Table 1; however, the applicability of the test method to other compounds must be demonstrated.
1.3 Analyte concentrations up to approximately 200 μg/L may be determined without dilution of the sample. Analytes that are inefficiently purged from water will not be detected when present at low concentrations, but they can be measured with acceptable accuracy and precision when present in sufficient amounts.
1.4 Analytes that are not separated chromatographically, but that have different mass spectra and noninterfering quantitation ions, can be identified and measured in the same calibration mixture or water sample. Analytes that have very similar mass spectra cannot be individually identified and measured in the same calibration mixture or water sample unless they have different retention times. Coeluting compounds with very similar mass spectra, such as structural isomers, must be reported as an isomeric group or pair. Two of the three isomeric xylenes are examples of structural isomers that may not be resolved on the capillary column, and if not, must be reported as an isomeric pair.
1.5 It is the responsibility of the user to ensure the validity of this test method for untested matrices.
1.6 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.7 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.
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An American National Standard
Designation: D 5790 – 95 (Reapproved 2001)
Standard Test Method for
Measurement of Purgeable Organic Compounds in Water by
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Capillary Column Gas Chromatography/Mass Spectrometry
This standard is issued under the fixed designation D 5790; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 1.7 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.1 This test method covers the identification and simulta-
responsibility of the user of this standard to establish appro-
neous measurement of purgeable volatile organic compounds.
priate safety and health practices and determine the applica-
It has been validated for treated drinking water, wastewater,
bility of regulatory limitations prior to use.
and ground water. This test method is not limited to these
particular aqueous matrices; however, the applicability of this
2. Referenced Documents
test method to other aqueous matrices must be demonstrated.
2.1 ASTM Standards:
1.2 Thistestmethodisapplicabletoawiderangeoforganic
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D1129 Terminology Relating to Water
compounds that have sufficiently high volatility and low water
D2777 Practice for Determination of Precision and Bias of
solubility to be efficiently removed from water samples using
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Applicable Methods of Committee D-19 on Water
purge and trap procedures. Table 1 lists the compounds that
D3871 Test Method for Purgeable Organic Compounds in
havebeenvalidatedforthistestmethod.Thistestmethodisnot
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Water Using Headspace Sampling
limited to the compounds listed in Table 1; however, the
D3973 Test Method for Low-Molecular Weight Haloge-
applicability of the test method to other compounds must be
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nated Hydrocarbons in Water
demonstrated.
D4210 Practice for Intralaboratory Quality Control Proce-
1.3 Analyte concentrations up to approximately 200 µg/L
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dures and a Discussion on Reporting Low-Level Data
may be determined without dilution of the sample. Analytes
E355 Practice for Gas Chromatography Terms and Rela-
that are inefficiently purged from water will not be detected
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tionships
when present at low concentrations, but they can be measured
2.2 Other Document:
with acceptable accuracy and precision when present in suffi-
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Code of Federal Regulations, 40 CFR Part 261
cient amounts.
1.4 Analytesthatarenotseparatedchromatographically,but
3. Terminology
thathavedifferentmassspectraandnoninterferingquantitation
3.1 Definitions:
ions, can be identified and measured in the same calibration
3.1.1 For definitions of terms used in this test method, refer
mixture or water sample.Analytes that have very similar mass
to Definitions D1129 and Practice E355.
spectra cannot be individually identified and measured in the
3.2 Definitions of Terms Specific to This Standard:
same calibration mixture or water sample unless they have
3.2.1 calibration standard—a solution prepared from the
different retention times. Coeluting compounds with very
primarydilutionstandardsolutionandstockstandardsolutions
similar mass spectra, such as structural isomers, must be
oftheinternalstandardsandsurrogateanalytes.Thecalibration
reportedasanisomericgrouporpair.Twoofthethreeisomeric
standards are used to calibrate the instrument response with
xylenes are examples of structural isomers that may not be
respect to analyte concentration.
resolved on the capillary column, and if not, must be reported
3.2.2 field duplicates —two separate samples collected at
as an isomeric pair.
the same time and place under identical circumstances and
1.5 It is the responsibility of the user to ensure the validity
treated exactly the same throughout field and laboratory
of this test method for untested matrices.
procedures. Analysis of field duplicates gives an indication of
1.6 The values stated in SI units are to be regarded as the
the precision associated with sample collection, preservation,
standard. The values given in parentheses are for information
and storage, as well as with laboratory procedures.
only.
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Annual Book of ASTM Standards, Vol 11.01.
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This test method is under the jurisdiction ofASTM Committee D19 on Water Annual Book of ASTM Standards, Vol 11.02.
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andisthedirectresponsibilityofSubcommitteeD19.06onMethodsforAnalysisfor Annual Book of ASTM Standards, Vol 14.01.
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Organic Substances in Water. Available from the Superintendent of Documents, U.S. Government Printing
Current edition approved Sept. 10, 1995. Published November 1995. Office, Washington, DC 20402.
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