ASTM D888-09
(Test Method)Standard Test Methods for Dissolved Oxygen in Water
Standard Test Methods for Dissolved Oxygen in Water
SIGNIFICANCE AND USE
Dissolved oxygen is required for the survival and growth of many aquatic organisms, including fish. The concentration of dissolved oxygen may also be associated with corrosivity and photosynthetic activity. The absence of oxygen may permit anaerobic decay of organic matter and the production of toxic and undesirable esthetic materials in the water.
SCOPE
1.1 These test methods cover the determination of dissolved oxygen in water. Three test methods are given as follows: Range, mg/LSections Test Method A—Titrimetric Procedure–
High Level>1.0 8 to 15 Test Method B—Instrumental Probe Procedure—
Electrochemical0.05 to 2016 to 25 Test Method C—Instrumental Probe Procedure—
Luminescence-Based Sensor0.05 to 2026 to 29
1.2 The precision of Test Methods A and B was carried out using a saturated sample of reagent water. It is the user's responsibility to ensure the validity of the test methods for waters of untested matrices.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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. For a specific precautionary statement, see Note 17.
8.1 This test method is applicable to waters containing more than 1000 μg/L of dissolved oxygen such as stream and sewage samples. It is the user's responsibility to ensure the validity of the test method for waters of untested matrices.
8.2 This test method, with the appropriate agent, is usable with a wide variety of interferences. It is a combination of the Winkler Method, the Alsterberg (Azide) Procedure, the Rideal-Stewart (permanganate) modification, and the Pomeroy-Kirshman-Alsterberg modification.
8.3 The precision of the test method was carried out using a saturated sample of reagent water.
16.1 This test method is applicable to waters containing dissolved oxygen in the range from 50 to 20 000 μg/L. It is the user's responsibility to ensure the validity of this test method for waters of untested matrices.
16.2 This test method describes procedures that utilize electrochemical probes for the determination of dissolved oxygen in fresh water and in brackish and marine waters that may contain dissolved or suspended solids. Samples can be analyzed in situ in bodies of water or in streams, or samples can be collected and analyzed subsequent to collection. The electrochemical probe method is especially useful in the monitoring of water systems in which it is desired to obtain a continuous record of the dissolved oxygen content.
16.2.1 This test method is recommended for measuring dissolved oxygen in waters containing materials that interfere with the chemical methods, such as sulfite, thiosulfate, polythionate, mercaptans, oxidizing metal ions, hypochlorite, and organic substances readily hydrolyzable in alkaline solutions.
16.3 Electrochemical dissolved oxygen probes are practical for the continuous monitoring of dissolved oxygen content in natural waters, process streams, biological processes, etc., when the probe output is conditioned by a suitably stable electronic circuit and recorded. The probe must be standardized before use on samples free of interfering materials, preferably with the azide modification of Test Method A.
26.1 This test method is applicable to waters containing dissolved oxygen in the range from 50 to 20 000 g/L. It is the user’s responsibility to ensure the validity of this test method for waters of untested matrices.
26.2 This method is for an instrumental probe-luminescence-based sensor using the technology of frequency-domain lifetime-based luminescence quenching and signal processing for analysis of dissolved oxygen. This method is amenable to all water and wa...
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Designation: D888 − 09
StandardTest Methods for
1
Dissolved Oxygen in Water
This standard is issued under the fixed designation D888; 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 (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope* D1193Specification for Reagent Water
D2777Practice for Determination of Precision and Bias of
1.1 Thesetestmethodscoverthedeterminationofdissolved
Applicable Test Methods of Committee D19 on Water
oxygen in water. Three test methods are given as follows:
D3370Practices for Sampling Water from Closed Conduits
Range, mg/L Sections
D5847Practice for Writing Quality Control Specifications
Test Method A—Titrimetric Procedure– >1.0 8 to 15
High Level for Standard Test Methods for Water Analysis
Test Method B—Instrumental Probe 0.05 to 20 16 to 25
E200Practice for Preparation, Standardization, and Storage
Procedure—
of Standard and Reagent Solutions for ChemicalAnalysis
Electrochemical
Test Method C—Instrumental Probe 0.05 to 20 26 to 29
3. Terminology
Procedure—
Luminescence-Based Sensor
3.1 Definitions—For definitions of terms used in these test
1.2 The precision of Test MethodsAand B was carried out
methods, refer to Terminology D1129.
using a saturated sample of reagent water. It is the user’s
3.2 Definitions of Terms Specific to This Standard:
responsibility to ensure the validity of the test methods for
3.2.1 amperometric systems, n—those instrumental probes
waters of untested matrices.
that involve the generation of an electrical current from which
1.3 The values stated in SI units are to be regarded as
the final measurement is derived.
standard. No other units of measurement are included in this
3.2.2 instrumental probes, n—devices used to penetrate and
standard.
examineasystemforthepurposeofrelayinginformationonits
1.4 This standard does not purport to address all of the
properties or composition.
safety concerns, if any, associated with its use. It is the
3.2.2.1 Discussion—The term probe is used in these test
responsibility of the user of this standard to establish appro-
methods to signify the entire sensor assembly, including
priate safety and health practices and determine the applica-
electrodes, electrolyte, membrane, materials of fabrications,
bility of regulatory limitations prior to use. For a specific
etc.
precautionary statement, see Note 17.
3.2.3 potentiometric systems, n—those instrumental probes
inwhichanelectricalpotentialisgeneratedandfromwhichthe
2. Referenced Documents
final measurement is derived.
2
2.1 ASTM Standards:
D1066Practice for Sampling Steam
4. Significance and Use
D1129Terminology Relating to Water
4.1 Dissolved oxygen is required for the survival and
growth of many aquatic organisms, including fish. The con-
1
These test methods are under the jurisdiction of ASTM Committee D19 on
centration of dissolved oxygen may also be associated with
Water and are the direct responsibility of Subcommittee D19.05 on Inorganic
corrosivity and photosynthetic activity.The absence of oxygen
Constituents in Water.
may permit anaerobic decay of organic matter and the produc-
Current edition approved Nov. 1, 2009. Published December 2009. Originally
approved in 1946. Last previous edition approved in 2005 as D888–05. DOI: tion of toxic and undesirable esthetic materials in the water.
10.1520/D0888-09.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or 5. Purity of Reagents
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.1 Purity of Reagents—Reagent grade chemicals shall be
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. used in all tests. Unless otherwise indicated, it is intended that
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D888 − 09
all reagents shall conform to the specifications of the Commit- through a tube extending to the bottom of a 250 to 300 mL
3
teeonAnalyticalReagentsoftheAmericanChemicalSociety. biological oxygen demand (BOD) bottle. Fill the bottle to
Other grades may be used if it is first ascertained that the overflowing and prevent turbulence and the formation of
reagent is of sufficiently high purity to permit its use without bubbles while filling the bottle.
lessening the accuracy of the determination.
7. Preservation of Samples
5.1.1 Reagent grade chemicals, as defined in Practice E200,
shall be used unless otherwise
...
This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:D888–05 Designation:D888–09
Standard Test Methods for
1
Dissolved Oxygen in Water
This standard is issued under the fixed designation D888; 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 (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope*
1.1These1.1 Thesetestmethodscoverthedeterminationofdissolvedoxygeninwater.Threetestmethodsaregivenasfollows:
Range, mg/L Sections
Test Method A—Titrimetric Procedure–High Level >1.0 8to15
Test Method A—Titrimetric Procedure– >1.0 8to15
High Level
Test Method B—Instrumental Probe Procedure 0.05 to 20 16 to 25
Test Method B—Instrumental Probe Procedure— 0.05 to 20 16 to 25
Electrochemical
Test Method C—Luminescence-based Sensor 0.05 to 20 26 to 29
Test Method C—Instrumental Probe Procedure— 0.05 to 20 26 to 29
Luminescence-Based Sensor
1.2 The precision of Test Methods A and B was carried out using a saturated sample of reagent water. It is the user’s
responsibility to ensure the validity of the test methods for waters of untested matrices.
1.3
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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. For a specific precautionary statement, see Note 17.
2. Referenced Documents
2
2.1 ASTM Standards:
D1066 Practice for Sampling Steam
D1129 Terminology Relating to Water
D1193 Specification for Reagent Water
D2777 Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water
D3370 Practices for Sampling Water from Closed Conduits
D5847 Practice for Writing Quality Control Specifications for Standard Test Methods for Water Analysis
E200 Practice for Preparation, Standardization, and Storage of Standard and Reagent Solutions for Chemical Analysis
3. Terminology
3.1 Definitions—For definitions of terms used in these test methods, refer to Terminology D1129.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 amperometric systems, n—those instrumental probes that involve the generation of an electrical current from which the
final measurement is derived.
3.2.2 instrumental probes, n—devices used to penetrate and examine a system for the purpose of relaying information on its
properties or composition.
3.2.2.1 Discussion—The term probe is used in these test methods to signify the entire sensor assembly, including electrodes,
electrolyte, membrane, materials of fabrications, etc.
1
These test methods are under the jurisdiction of ASTM Committee D19 on Water and are the direct responsibility of Subcommittee D19.05 on Inorganic Constituents
in Water.
Current edition approved Aug. 15, 2005. Published August 2005. Originally approved in 1946. Last previous edition approved in 2003 as D888–03. DOI:
10.1520/D0888-05.
Current edition approved Nov. 1, 2009. Published December 2009. Originally approved in 1946. Last previous edition approved in 2005 as D888–05. DOI:
10.1520/D0888-09.
2
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatservice@astm.org.For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
D888–09
3.2.3 potentiometric systems, n—thoseinstrumentalprobesinwhichanelectricalpotentialisgeneratedandfromwhichthefinal
measurement is derived.
4. Significance and Use
4.1 Dissolved oxygen is required for the survival and growth of many aquatic organisms, including fish. The concentration of
dissolvedoxygenmayalsobeassociatedwithcorrosivityandphotosyntheticactivity.Theabsenceofoxygenmaypermitanaerobic
decay of organic matter and the production of toxic and undesirable esthetic materials in the water.
5. Purity of Reagents
5.1 Purity of Reagents—Reagent grade chemicals shall be used in all tests. Unless otherwise indicated, it is inten
...
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