ASTM D1068-10
(Test Method)Standard Test Methods for Iron in Water
Standard Test Methods for Iron in Water
SIGNIFICANCE AND USE
Iron is the second most abundant metallic element in the earth's crust and is essential in the metabolism of plants and animals. If presented in excessive amounts, however, it forms oxyhydroxide precipitates that stain laundry and porcelain. As a result, the recommended limit for iron in domestic water supplies is 0.3 mg/L. These test methods are useful for determining iron in many natural waters.
SCOPE
1.1 These test methods cover the determination of iron in water. Procedures are given for determining total iron, dissolved iron, and ferrous iron. Undissolved iron may be calculated from the total iron and dissolved iron determinations. The test methods are given as follows:
General Information
Relations
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D1068 − 10
StandardTest Methods for
1
Iron in Water
This standard is issued under the fixed designation D1068; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* D1193 Specification for Reagent Water
D1687 Test Methods for Chromium in Water
1.1 These test methods cover the determination of iron in
D1688 Test Methods for Copper in Water
water. Procedures are given for determining total iron, dis-
D1691 Test Methods for Zinc in Water
solved iron, and ferrous iron. Undissolved iron may be
D1886 Test Methods for Nickel in Water
calculated from the total iron and dissolved iron determina-
D2777 Practice for Determination of Precision and Bias of
tions. The test methods are given as follows:
Applicable Test Methods of Committee D19 on Water
Range Sections
D3370 Practices for Sampling Water from Closed Conduits
Test Method A—Atomic Absorption, 0.1 to 5.0 mg/L 7 to 16
Direct D3558 Test Methods for Cobalt in Water
Test Method B—Atomic 5 to 100 µg/L 17 to 26
D3559 Test Methods for Lead in Water
Absorption, Graphite Furnace
D3919 Practice for Measuring Trace Elements in Water by
Test Method C—Photometric 40 to 1000 µg/L 27 to 38
Bathophenanthrolineµ g/L Graphite Furnace Atomic Absorption Spectrophotometry
D4841 Practice for Estimation of Holding Time for Water
1.2 It is the user’s responsibility to ensure the validity of
Samples Containing Organic and Inorganic Constituents
these test methods to waters of untested matrices.
D5810 Guide for Spiking into Aqueous Samples
1.3 The chelation-extraction and two former photometric
D5847 Practice for Writing Quality Control Specifications
test methods were discontinued. See Appendix X2 for histori-
for Standard Test Methods for Water Analysis
cal information.
E60 Practice for Analysis of Metals, Ores, and Related
1.4 The values stated in SI units are to be regarded as
Materials by Spectrophotometry
standard. No other units of measurement are included in this
E275 Practice for Describing and Measuring Performance of
standard.
Ultraviolet and Visible Spectrophotometers
1.5 This standard does not purport to address all of the
3. Terminology
safety concerns, if any, associated with its use. It is the
3.1 Definitions—For definitions of terms used in these test
responsibility of the user of this standard to establish appro-
methods, refer to Terminology D1129.
priate safety and health practices and determine the applica-
3.2 Definitions of Terms Specific to This Standard:
bility of regulatory limitations prior to use. Specific hazards
3.2.1 total recoverable iron, n—an arbitrary analytical term
statements are given in Note 3, 11.7.1, and X1.1.2.
relating to the recoverable forms of iron that are determinable
2. Referenced Documents by the digestion method which is included in these test
2
methods.
2.1 ASTM Standards:
D858 Test Methods for Manganese in Water
4. Significance and Use
D1066 Practice for Sampling Steam
4.1 Iron is the second most abundant metallic element in the
D1129 Terminology Relating to Water
earth’s crust and is essential in the metabolism of plants and
animals. If presented in excessive amounts, however, it forms
1
These test methods are under the jurisdiction of ASTM Committee D19 on
oxyhydroxide precipitates that stain laundry and porcelain. As
Water and are the direct responsibility of Subcommittee D19.05 on Inorganic
a result, the recommended limit for iron in domestic water
Constituents in Water.
supplies is 0.3 mg/L. These test methods are useful for
Current edition approved Sept. 1, 2010. Published October 2010. Originally
ε1
determining iron in many natural waters.
approved in 1949. Last previous edition approved in 2005 as D1068 – 05 . DOI:
10.1520/D1068-10.
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 Reagent grade chemicals shall be used in all tests.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. Unless otherwise indicated, it is intended that all reagents shall
*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
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D1068 − 10
conform to the specifications of the Committee on Analytical determined by atomizing the sample following hydrochloric-
Reagents of the American Chemical Society,
...
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.
An American National Standard
´1
Designation:D1068–05 Designation:D1068–10
Standard Test Methods for
1
Iron in Water
This standard is issued under the fixed designation D1068; 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.
This standard has been approved for use by agencies of the Department of Defense.
1
´ NOTE—Warning notes were moved into the text editorially in July 2005.
1. Scope Scope*
1.1 These test methods cover the determination of iron in water. Procedures are given for determining total iron, dissolved iron,
and ferrous iron. Undissolved iron may be calculated from the total iron and dissolved iron determinations. The test methods are
given as follows:
Range Sections
Test Method A—Atomic Absorption, 0.1 to 5.0 mg/L 7to15
Direct
Test Method A—Atomic Absorption, 0.1 to 5.0 mg/L 7to16
Direct
Test Method C—Atomic Absorption, 5 to 100 µg/L16 to 17 to 26
Graphite Furnace 24
Test Method B—Atomic Absorption, 5 to 100 µg/L 17 to 26
Graphite Furnace
Test Method D—Photometric 40 to 1000 µg/L25 to 27 to 38
Bathophenanthrolineµ g/L 36
Test Method C—Photometric 40 to 1000 µg/L 27 to 38
Bathophenanthrolineµ g/L
1.2 It is the user’s responsibility to ensure the validity of these test methods to waters of untested matrices.
1.3
1.3 The chelation-extraction and two former photometric test methods were discontinued. See Appendix X2 for historical
information.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 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 hazards statements are given in Note 3, section , 11.7.1, and section , and X1.1.2.
1.4Two former photometric test methods were discontinued. See Appendix X2 for historical information.
2. Referenced Documents
2
2.1 ASTM Standards:
D858 Test Methods for Manganese in Water
D1066 Practice for Sampling Steam
D1129 Terminology Relating to Water D1192Guide for Equipment for Sampling Water and Steam in Closed Conduits
D1193 Specification for Reagent Water
D1687 Test Methods for Chromium in Water
D1688 Test Methods for Copper in Water
D1691 Test Methods for Zinc in Water
D1886 Test Methods for Nickel in Water
D2777 Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water
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 June 1, 2005. Published July 2005. Originally approved in 1949. Last previous edition approved in 2003 as D1068–03. DOI:
10.1520/D1068-05E01.
´1
Current edition approved Sept. 1, 2010. Published October 2010. Originally approved in 1949. Last previous edition approved in 2005 as D1068 – 05 . DOI:
10.1520/D1068-10.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@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 ----------------------
D1068–10
D3370 Practices for Sampling Water from Closed Conduits
D3558 Test Methods for Cobalt in Water
D3559 Test Methods for Lead in Water
D3919 Practice for Measuring Trace Elements in Water by Graphite Furnace Atomic Absorption Spectrophotometry
D4841 Practice for Estimation of Holding Time for Water Samples Containing Organic and Inorganic Constituents
D5810 Guide for Spiking into Aqueous Samples
D5847 Practice for Writing Quality Control Specifications for Standard Test Methods for Water Analysis
E60 Practice for Analysis of Metals, Ores, and Related Materials by Molecular Absorption Spectrometry
E275 Practice for Describing and Measuring Performance of Ultraviolet and Visible Spectrophotometers
3. Terminology
3.1 Definitions: For definitions of terms used in these test methods,
...
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