ASTM D513-92(1996)

Standard Test Methods for Total and Dissolved Carbon Dioxide in Water

SCOPE
1.1 These test methods provide for the measurement of total or dissolved carbon dioxide present as carbon dioxide (CO2>>), carbonic acid, bicarbonate ion, and carbonate ion in water:  Range Sections Test Method A (Gas Sensing Electrode) 2-800 mg/L 8-15 Test Method B (CO2 Evolution, Coulometric 5-800 mg/L 16-24 Titration)
1.2 Carbon dioxide may also be detected from carbonates present in particulates in samples.  
1.3 Test Method A is applicable to various natural waters and brines.  
1.4 Test Method B is applicable to natural waters, brines, and various industrial waters as delineated in 16.4.
1.5 It is the user's responsibility to ensure the validity of these test methods on waters of untested matrices.
1.6 Several test methods were discontinued from this standard in 1988. Refer to Appendix X1 for historical information.
1.7 This standard does not purport to address all of the safety problems, 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.>

General Information

• Status: Historical
• Publication Date: 31-Dec-1995
• ICS: 13.060.50 - Examination of water for chemical substances
• Technical Committee: D19 - Water
• Drafting Committee: D19.05 - Inorganic Constituents in Water

Relations

• Replaced By: ASTM D513-02 - Standard Test Methods for Total and Dissolved Carbon Dioxide in Water
• Effective Date: 10-Jul-2002

Standards Content (Sample)

Designation: D 513 – 92 (Reapproved 1996)
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Methods for
1
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 age of Standard and Reagent Solutions for Chemical
3
Analysis
1.1 These test methods provide for the measurement of total
or dissolved carbon dioxide present as carbon dioxide (CO ),
2 3. Terminology
carbonic acid, bicarbonate ion, and carbonate ion in water:
3.1 Definitions—For definitions of terms used in these test
Range Sections
methods, refer to Terminology D 1129.
Test Method A (Gas Sensing Electrode) 2 to 800 mg/L 8 to 15
Test Method B (CO Evolution, Coulometric 5 to 800 mg/L 16 to 24
2
4. Significance and Use
Titration)
4.1 Carbon dioxide is a major respiration product of plants
1.2 Carbon dioxide may also be detected from carbonates
and animals and a decomposition product of organic matter and
present in particulates in samples.
certain minerals. The atmosphere averages about 0.04 vol % of
1.3 Test Method A is applicable to various natural waters
CO . Surface waters generally contain less than 10 mg/L,
2
and brines.
except at local points of abnormal organic or mineral decom-
1.4 Test Method B is applicable to natural waters, brines,
position; however, underground water, particularly deep wa-
and various industrial waters as delineated in 16.4.
ters, may contain several hundred mg/L.
1.5 It is the user’s responsibility to ensure the validity of
4.2 When dissolved in water, CO contributes significantly
2
these test methods on waters of untested matrices.
to corrosion of water-handling systems. This is particularly
1.6 Several test methods were discontinued from this stan-
troublesome in steam condensate systems. Loss of CO from
2
dard in 1988. Refer to Appendix X1 for historical information.
an aqueous system can disturb the carbonate equilibrium and
1.7 This standard does not purport to address all of the result in calcite encrustation of confining surfaces. Scaling of
safety concerns, if any, associated with its use. It is the water heaters is a good example. Because of the delicate
responsibility of the user of this standard to establish appro- balance between corrosion and encrustation tendencies, much
priate safety and health practices and determine the applica- care must be given to control of CO and related species in
2
bility of regulatory limitations prior to use. water systems. Recarbonation of municipal supplies during
final stages of softening and amine neutralization of steam
2. Referenced Documents condensate are applied for these purposes.
2.1 ASTM Standards:
5. Purity of Reagents
2
D 1066 Practice for Sampling Steam
5.1 Reagent grade chemicals shall be used in all tests.
2
D 1129 Terminology Relating to Water
Unless otherwise indicated, it is intended that all reagents shall
D 1192 Specification for Equipment for Sampling Water
conform to the specifications of the Committee on Analytical
2
and Steam in Closed Conduits
4
Reagents of the American Chemical Society. Other grades
2
D 1193 Specification for Reagent Water
may be used, provided it is first ascertained that the reagent is
2
D 1293 Test Methods for pH of Water
of sufficiently high purity to permit its use without lessening
D 2777 Practice for Determination of Precision and Bias of
the accuracy of the determination.
2
Applicable Methods of Committee D-19 on Water
5.2 Unless otherwise indicated, references to water shall be
D 3370 Practices for Sampling Water from Closed Con-
understood to mean water conforming to Type I of Specifica-
2
duits
tion D 1193. Additionally, for those test methods requiring
E 200 Practice for Preparation, Standardization, and Stor-
water free of CO , refer to 8.2 of Practice E 200.
2
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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 D-19 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 Oct. 15, 1992. Published December 1992. Originally Chemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeia
published as D 513 – 38. Last previous edition D 513 – 88. and National Formulary, U.S. Pharmacopeial Convention, Inc. (USPC), Rockville,
2
Annual Book of ASTM Standards, Vol 11.01. MD.
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