ASTM D1068-05e1
(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’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:RangeSectionsTest Method A—Atomic Absorption, Direct0.1 to 5.0 mg/L7 to 15Test Method C—Atomic Absorption, Graphite Furnace5 to 100 μg/L16 to 24Test Method D—Photometric Bathophenanthroline μ g/L40 to 1000 μg/L25 to 36
1.2 It is the user's responsibility to ensure the validity of these test methods to waters of untested matrices.
1.3 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 X1.1.2.
1.3 Two former photometric test methods were discontinued. See Appendix X2 for historical information.
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
An American National Standard
´1
Designation:D1068–05
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 D1192 Guide for Equipment for SamplingWater and Steam
3
in Closed Conduits
1.1 These test methods cover the determination of iron in
D1193 Specification for Reagent Water
water. Procedures are given for determining total iron, dis-
D1687 Test Methods for Chromium in Water
solved iron, and ferrous iron. Undissolved iron may be
D1688 Test Methods for Copper in Water
calculated from the total iron and dissolved iron determina-
D1691 Test Methods for Zinc in Water
tions. The test methods are given as follows:
D1886 Test Methods for Nickel in Water
Range Sections
D2777 Practice for Determination of Precision and Bias of
Test Method A—Atomic Absorption, 0.1 to 5.0 mg/L 7 to 15
Direct
Applicable Test Methods of Committee D19 on Water
Test Method C—Atomic Absorption, 5to100 µg/L 16to24
D3370 Practices for Sampling Water from Closed Conduits
Graphite Furnace
Test Method D—Photometric 40 to 1000 µg/L 25 to 36 D3558 Test Methods for Cobalt in Water
Bathophenanthrolineµ g/L
D3559 Test Methods for Lead in Water
D3919 Practice for Measuring Trace Elements in Water by
1.2 It is the user’s responsibility to ensure the validity of
Graphite Furnace Atomic Absorption Spectrophotometry
these test methods to waters of untested matrices.
D4841 Practice for Estimation of Holding Time for Water
1.3 This standard does not purport to address all of the
Samples Containing Organic and Inorganic Constituents
safety concerns, if any, associated with its use. It is the
D5810 Guide for Spiking into Aqueous Samples
responsibility of the user of this standard to establish appro-
D5847 Practice for Writing Quality Control Specifications
priate safety and health practices and determine the applica-
for Standard Test Methods for Water Analysis
bility of regulatory limitations prior to use. Specific hazards
E60 Practice for Analysis of Metals, Ores, and Related
statements are given in Note 3, section 11.7.1, and section
Materials by Molecular Absorption Spectrometry
X1.1.2.
E275 Practice for Describing and Measuring Performance
1.4 Two former photometric test methods were discontin-
of Ultraviolet and Visible Spectrophotometers
ued. See Appendix X2 for historical information.
3. Terminology
2. Referenced Documents
2
3.1 Definitions: For definitions of terms used in these test
2.1 ASTM Standards:
methods, refer to Terminology D1129.
D858 Test Methods for Manganese in Water
3.2 Definitions of Terms Specific to This Standard:
D1066 Practice for Sampling Steam
3.2.1 total recoverable iron—an arbitrary analytical term
D1129 Terminology Relating to Water
relating to the recoverable forms of iron that are determinable
by the digestion method which is included in these test
1
These test methods are under the jurisdiction of ASTM Committee D19 on methods.
Water and are the direct responsibility of Subcommittee D19.05 on Inorganic
Constituents in Water.
4. Significance and Use
CurrenteditionapprovedJune1,2005.PublishedJuly2005.Originallyapproved
4.1 Iron is the second most abundant metallic element in the
in 1949. Last previous edition approved in 2003 as D1068 – 03. DOI: 10.1520/
D1068-05E01.
earth’s crust and is essential in the metabolism of plants and
2
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
3
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.
1
---------------------- Page: 1 ----------------------
´1
D1068–05
animals. If presented in excessive amounts, however, it forms user’s responsibility to ensure the validity of this test method
oxyhydroxide precipitates that stain laundry and porcelain. As for waters of untested matrices.
a result, the recommended limit for iron in domestic water
supplies is 0.3 mg/L. These test methods are useful for 8. Summary of Test Method
determining iron in many natural waters.
8.1 Iron is determined by atomic absorption spectrophotom-
etry. Dissolved iron is determined by atomizing the filtered
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.