ASTM D513-06
(Test Method)Standard Test Methods for Total and Dissolved Carbon Dioxide in Water
Standard Test Methods for Total and Dissolved Carbon Dioxide in Water
SIGNIFICANCE AND USE
Carbon dioxide is a major respiration product of plants and animals and a decomposition product of organic matter and certain minerals. The atmosphere averages about 0.04 vol % of CO2. Surface waters generally contain less than 10 mg/L, except at local points of abnormal organic or mineral decomposition; however, underground water, particularly deep waters, may contain several hundred mg/L.
When dissolved in water, CO2 contributes significantly to corrosion of water-handling systems. This is particularly troublesome in steam condensate systems. Loss of CO2 from an aqueous system can disturb the carbonate equilibrium and result in calcite encrustation of confining surfaces. Scaling of water heaters is a good example. Because of the delicate balance between corrosion and encrustation tendencies, much care must be given to control of CO2 and related species in water systems. Recarbonation of municipal supplies during final stages of softening and amine neutralization of steam condensate are applied for these purposes.
SCOPE
1.1 These test methods cover the measurement of total or dissolved carbon dioxide present as carbon dioxide (CO2), carbonic acid, bicarbonate ion, and carbonate ion in water:RangeSectionsTest Method A (Gas Sensing Electrode)2 to 800 mg/L8 to 15Test Method B (CO2 Evolution, Coulometric Titration)5 to 800 mg/L16 to 24
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 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.8 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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Standards Content (Sample)
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Designation:D513–06
Standard Test Methods for
1
Total and Dissolved Carbon Dioxide in Water
This standard is issued under the fixed designation D513; 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 D1129 Terminology Relating to Water
D1192 Guide for Equipment for SamplingWater and Steam
1.1 These test methods cover the measurement of total or
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in Closed Conduits
dissolved carbon dioxide present as carbon dioxide (CO ),
2
D1193 Specification for Reagent Water
carbonic acid, bicarbonate ion, and carbonate ion in water:
D1293 Test Methods for pH of Water
Range Sections
D2777 Practice for Determination of Precision and Bias of
Test Method A (Gas Sensing Electrode) 2 to 800 mg/L 8 to 15
Test Method B (CO Evolution, Coulometric 5to800 mg/L 16to24
2 Applicable Test Methods of Committee D19 on Water
Titration)
D3370 Practices for Sampling Water from Closed Conduits
1.2 Carbon dioxide may also be detected from carbonates
D5847 Practice for Writing Quality Control Specifications
present in particulates in samples. for Standard Test Methods for Water Analysis
1.3 Test Method A is applicable to various natural waters
E200 Practice for Preparation, Standardization, and Storage
and brines. of Standard and Reagent Solutions for Chemical Analysis
1.4 Test Method B is applicable to natural waters, brines,
3. Terminology
and various industrial waters as delineated in 16.4.
1.5 It is the user’s responsibility to ensure the validity of 3.1 Definitions—For definitions of terms used in these test
these test methods on waters of untested matrices. methods, refer to Terminology D1129.
1.6 Several test methods were discontinued from this stan-
4. Significance and Use
dard in 1988. Refer toAppendix X1 for historical information.
1.7 The values stated in SI units are to be regarded as 4.1 Carbon dioxide is a major respiration product of plants
standard. No other units of measurement are included in this andanimalsandadecompositionproductoforganicmatterand
standard. certain minerals.The atmosphere averages about 0.04 vol % of
1.8 This standard does not purport to address all of the CO . Surface waters generally contain less than 10 mg/L,
2
except at local points of abnormal organic or mineral decom-
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- position; however, underground water, particularly deep wa-
ters, may contain several hundred mg/L.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. 4.2 When dissolved in water, CO contributes significantly
2
to corrosion of water-handling systems. This is particularly
2. Referenced Documents
troublesome in steam condensate systems. Loss of CO from
2
2
2.1 ASTM Standards: an aqueous system can disturb the carbonate equilibrium and
D1066 Practice for Sampling Steam result in calcite encrustation of confining surfaces. Scaling of
water heaters is a good example. Because of the delicate
balance between corrosion and encrustation tendencies, much
1
These test methods are under the jurisdiction of ASTM Committee D19 on
care must be given to control of CO and related species in
2
Water and are the direct responsibility of Subcommittee D19.05 on Inorganic
water systems. Recarbonation of municipal supplies during
Constituents in Water.
Current edition approved Dec. 15, 2006. Published January 2007. Originally
final stages of softening and amine neutralization of steam
approved in 1938. Last previous edition approved in 2002 as D513 – 02. DOI:
condensate are applied for these purposes.
10.1520/D0513-06.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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Standards volume information, refer to the standard’s Document Summary page on Withdrawn. The last approved version of this historical standard is referenced
the ASTM website. on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D513–06
5. Purity of Reagents 8.2 Samples containing 2 to 800 mg/L total CO can be
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analyzed by this test method. The concentration range may be
5.1 Reagent grade chemicals shall be used in all tests.
extended by dilution of an appropriate aliquot.
Unless otherwise indicated, it is intended that all reagents shall
8.3 Samples should be analyzed immediately. If this is not
conform to the specifications of the Committee on Analytical
4 possible, pre
...
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