ASTM D3973-85(2011)
(Test Method)Standard Test Method for Low-Molecular Weight Halogenated Hydrocarbons in Water
Standard Test Method for Low-Molecular Weight Halogenated Hydrocarbons in Water
SIGNIFICANCE AND USE
The incidental conversion of organic material to trihalomethanes and other volatile organohalides during chlorination of water is a possible health hazard and is the object of much research. This test method can be used as a rapid, simple means for determining many volatile organohalides in raw and processed water.
SCOPE
1.1 This test method covers the analysis of drinking water. It is also applicable to many environmental and waste waters when adequate validation is included.
1.2 This test method covers the determination of halomethanes, haloethanes, and some related extractable organohalides amenable to gas chromatographic measurement. The applicable concentration range for trihalomethanes is from 1 to 200 μg/L. Detection limits depend on the compound, matrix, and on the characteristics of the gas chromatographic system.
1.3 For compounds not specifically included in the precision and bias section the analyst should validate the test method by collecting precision and bias data on actual samples.
1.4 Confirmation of component identities is obtained by observing retention times using gas chromatographic columns of different polarities. When concentrations are sufficiently high (>50 μg/L) confirmation with halogen specific detectors or gas chromatography/mass spectrometry (GC/MS) may be used. Confirmation of purgeable compounds at levels down to 1 μg/L can be obtained using Test Method D3871 with GC/MS detection.
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.6 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. Specific precautionary statements are given in Section 8.
General Information
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D3973 − 85 (Reapproved 2011)
Standard Test Method for
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Low-Molecular Weight Halogenated Hydrocarbons in Water
This standard is issued under the fixed designation D3973; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
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1.1 This test method covers the analysis of drinking water.
2.1 ASTM Standards:
It is also applicable to many environmental and waste waters D1129 Terminology Relating to Water
when adequate validation is included.
D1193 Specification for Reagent Water
D3871 Test Method for Purgeable Organic Compounds in
1.2 This test method covers the determination of
Water Using Headspace Sampling
halomethanes, haloethanes, and some related extractable or-
E355 Practice for Gas ChromatographyTerms and Relation-
ganohalides amenable to gas chromatographic measurement.
ships
The applicable concentration range for trihalomethanes is from
1 to 200 µg/L. Detection limits depend on the compound,
3. Terminology
matrix, and on the characteristics of the gas chromatographic
system.
3.1 Definitions—For definitions of terms used in this test
method, refer to Terminology D1129 and Practice E355.
1.3 Forcompoundsnotspecificallyincludedintheprecision
and bias section the analyst should validate the test method by
4. Summary of Test Method
collecting precision and bias data on actual samples.
4.1 This test method employs liquid/liquid extraction to
1.4 Confirmation of component identities is obtained by
isolate compounds of interest and provide a five-fold concen-
observing retention times using gas chromatographic columns
3, 4, 5
tration enhancement prior to measurement. A5-mL aque-
of different polarities. When concentrations are sufficiently
ous sample is extracted once with 1 mL of solvent. D3871-µL
high (>50 µg/L) confirmation with halogen specific detectors
aliquot of the extract is analyzed in a gas chromatograph
or gas chromatography/mass spectrometry (GC/MS) may be
equipped with an electron-capture detector.
used. Confirmation of purgeable compounds at levels down to
1 µg/Lcan be obtained usingTest Method D3871 with GC/MS
4.2 Extraction efficiencies with the 1:5 solvent/sample ratio
detection.
for trihalomethanes average above 90 %. To compensate for
extraction losses, calibration standards are extracted and ana-
1.5 The values stated in SI units are to be regarded as
lyzed in an identical manner.
standard. No other units of measurement are included in this
standard.
4.3 The concentration of each component is calculated and
1.6 This standard does not purport to address all of the reported in micrograms per litre.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
bility of regulatory limitations prior to use. Specific precau-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
tionary statements are given in Section 8. Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
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Mieure, J. P., “A Rapid and Sensitive Method for Determining Volatile
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This test method is under the jurisdiction of ASTM Committee D19 on Water Organohalides in Water,” Journal AWWA, Vol 69, 1977, p. 60.
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andisthedirectresponsibilityofSubcommitteeD19.06onMethodsforAnalysisfor Richard, J. J., and Junk, G. A., “Liquid Extraction for Rapid Determination of
Organic Substances in Water. Halomethanes in Water,” Journal AWWA , Vol 69, 1977, p. 62.
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Current edition approved May 1, 2011. Published June 2011. Originally “The Analysis of Trihalomethanes in Drinking Water by Liquid/Liquid
approved in 1980. Last previous edition approved in 2003 as D3973 – 85 (2003). Extraction,” U.S. Environmental Protection Agency, EMSL, Cincinnati, OH, Sept.
DOI: 10.1520/D3973-85R11. 9, 1977.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D3973 − 85 (2011)
5. Significance and Use 8. Reagents
5.1 The incidental conversion of organic material to triha- 8.1 Purity of Reagents—Reagent grade chemicals shall be
lomethanes and other volatile organohalides during chlorina- used in all tests. Unless otherwise indicated, it is intended that
tion of water is a possible health hazard and is the object of all reagents shall conform to the specifications of the Commit-
much research.This test method can be used as a rapid, simple tee on Ana
...
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