ASTM D513-02

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Designation:D 513–02
Standard Test Methods for
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Total and Dissolved Carbon Dioxide in Water
This standard is issued under the fixed designation D 513; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope D 5847 Practice for Writing Quality Control Specifications
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for Standard Test Methods for Water Analysis
1.1 These test methods provide for the measurement of total
E 200 Practice for Preparation, Standardization, and Stor-
or dissolved carbon dioxide present as carbon dioxide (CO ),
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age of Standard and Reagent Solutions for Chemical
carbonic acid, bicarbonate ion, and carbonate ion in water:
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Analysis
Range Sections
Test Method A (Gas Sensing Electrode) 2 to 800 mg/L 8 to 15
3. Terminology
Test Method B (CO Evolution, Coulometric 5to800 mg/L 16to24
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Titration)
3.1 Definitions—For definitions of terms used in these test
1.2 Carbon dioxide may also be detected from carbonates methods, refer to Terminology D 1129.
present in particulates in samples.
4. Significance and Use
1.3 Test Method A is applicable to various natural waters
4.1 Carbon dioxide is a major respiration product of plants
and brines.
1.4 Test Method B is applicable to natural waters, brines, andanimalsandadecompositionproductoforganicmatterand
certain minerals.The atmosphere averages about 0.04 vol % of
and various industrial waters as delineated in 16.4.
1.5 It is the user’s responsibility to ensure the validity of CO . Surface waters generally contain less than 10 mg/L,
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except at local points of abnormal organic or mineral decom-
these test methods on waters of untested matrices.
1.6 Several test methods were discontinued from this stan- position; however, underground water, particularly deep wa-
dard in 1988. Refer toAppendix X1 for historical information. ters, may contain several hundred mg/L.
1.7 This standard does not purport to address all of the 4.2 When dissolved in water, CO contributes significantly
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safety concerns, if any, associated with its use. It is the to corrosion of water-handling systems. This is particularly
responsibility of the user of this standard to establish appro- troublesome in steam condensate systems. Loss of CO from
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priate safety and health practices and determine the applica- an aqueous system can disturb the carbonate equilibrium and
result in calcite encrustation of confining surfaces. Scaling of
bility of regulatory limitations prior to use.
water heaters is a good example. Because of the delicate
2. Referenced Documents
balance between corrosion and encrustation tendencies, much
2.1 ASTM Standards: care must be given to control of CO and related species in
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D 1066 Practice for Sampling Steam water systems. Recarbonation of municipal supplies during
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D 1129 Terminology Relating to Water final stages of softening and amine neutralization of steam
D 1192 Guide for Equipment for Sampling Water and condensate are applied for these purposes.
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Steam in Closed Conduits
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5. Purity of Reagents
D 1193 Specification for Reagent Water
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5.1 Reagent grade chemicals shall be used in all tests.
D 1293 Test Methods for pH of Water
D 2777 Practice for Determination of Precision and Bias of Unless otherwise indicated, it is intended that all reagents shall
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conform to the specifications of the Committee on Analytical
Applicable Test Methods of Committee D19 on Water
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D 3370 Practices for Sampling Water from Closed Con- Reagents of the American Chemical Society. Other grades
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duits
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Annual Book of ASTM Standards, Vol 11.02.
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Annual Book of ASTM Standards, Vol 15.05.
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These test methods are under the jurisdiction of ASTM Committee D19 on Reagent Chemicals, American Chemical Society Specifications, American
Water and are the direct responsibility of Subcommittee D19.05 on Inorganic
Chemical Society, Washington, DC. For suggestions on the testing of reagents not
Constituents in Water.
listed by the American Chemical Society, see Analar Standards for Laboratory
Current edition approved July 10, 2002. Published August 2002. Originally
Chemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeia
published as D 513 – 38. Last previous edition D 513 – 92 (1996). and National Formulary, U.S. Pharmacopeial Convention, Inc. (USPC), Rockville,
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Annual Book of ASTM Standards, Vol 11.01. MD.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D513–02
may be used, provided it is first ascertained that the reagent is 9. Summary of Test Method
of sufficiently high purity to
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