ASTM E841-12
(Test Method)Standard Test Method for Determination of Copper in Iron Ores and Related Materials by Atomic Absorption Spectrometry
Standard Test Method for Determination of Copper in Iron Ores and Related Materials by Atomic Absorption Spectrometry
SIGNIFICANCE AND USE
In the making of iron and steel during the reduction of iron ores, copper forms alloy with iron and steel hence the necessity of determining the copper content for metallurgical consideration.
This test method is intended to be used for compliance with compositional specifications for copper content. It is assumed that all who use these procedures will be trained analysts capable of performing common laboratory procedures skillfully and safely. It is expected that work will be performed in a properly equipped laboratory and that proper waste disposal procedures will be followed. Appropriate quality control practices must be followed, such as those described in Guide E882.
SCOPE
1.1 This test method covers the determination of copper in iron ores, concentrates, agglomerates, and related materials in the concentration range from 0.003 % to 1 %.
Note 1—As used in this test method (except as related to the term “relative standard deviation”, “%” refers to a mass fraction (wt / wt %) (g/100g).
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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.
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Designation:E841–12
Standard Test Method for
Determination of Copper in Iron Ores and Related Materials
1
by Atomic Absorption Spectrometry
This standard is issued under the fixed designation E841; 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 E173 Practice for Conducting Interlaboratory Studies of
3
Methods for Chemical Analysis of Metals
1.1 This test method covers the determination of copper in
E276 Test Method for Particle Size or Screen Analysis at
iron ores, concentrates, agglomerates, and related materials in
No. 4 (4.75-mm) Sieve and Finer for Metal-Bearing Ores
the concentration range from 0.003 % to 1 %.
and Related Materials
3
NOTE 1—As used in this test method (except as related to the term
E663 Practice for Flame Atomic Absorption Analysis
“relative standard deviation”, “%” refers to a mass fraction (wt / wt %)
E877 Practice for Sampling and Sample Preparation of Iron
(g/100g).
Ores and Related Materials for Determination of Chemical
1.2 The values stated in SI units are to be regarded as
Composition
standard. No other units of measurement are included in this
E882 Guide for Accountability and Quality Control in the
standard.
Chemical Analysis Laboratory
1.3 This standard does not purport to address all of the
E1601 Practice for Conducting an Interlaboratory Study to
safety concerns, if any, associated with its use. It is the
Evaluate the Performance of an Analytical Method
responsibility of the user of this standard to establish appro-
E1763 Guide for Interpretation and Use of Results from
priate safety and health practices and determine the applica-
Interlaboratory Testing of Chemical Analysis Methods
bility of regulatory limitations prior to use.
3. Terminology
2. Referenced Documents
3.1 Definitions—For definitions of terms used in this test
2
2.1 ASTM Standards:
method, refer to Terminology E135.
D1193 Specification for Reagent Water
4. Summary of Test Method
E50 Practices for Apparatus, Reagents, and Safety Consid-
erations for Chemical Analysis of Metals, Ores, and
4.1 The sample is dissolved in HCl with the addition of a
Related Materials
small amount of HNO and HF acids. After evaporation to
3
E135 Terminology Relating to Analytical Chemistry for
fumes with HClO , the solution is diluted with water and
4
Metals, Ores, and Related Materials
filtered. A portion of the solution is examined by atomic
absorption spectrometry using standards containing approxi-
mately the same amount of iron as the test sample.
1
This test method is under the jurisdiction of ASTM Committee E01 on
5. Significance and Use
Analytical Chemistry for Metals, Ores, and Related Materials and is the direct
responsibility of Subcommittee E01.02 on Ores, Concentrates, and Related Metal-
5.1 In the making of iron and steel during the reduction of
lurgical Materials.
iron ores, copper forms alloy with iron and steel hence the
Current edition approved Jan. 15, 2012. Published March 2012. Originally
necessity of determining the copper content for metallurgical
approved in 1981. Last previous edition approved in 2004 as E841 – 04. DOI:
10.1520/E0841-12.
consideration.
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
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E841–12
5.2 This test method is intended to be used for compliance to Type I or II of Specification D1193. Type III or IV may be
with compositional specifications for copper content. It is used if they effect no measurable change in the blank or
assumed that all who use these procedures will be trained sample.
analysts capable of performing common laboratory procedures 8.3 Copper Standard Solution A (1 mL = 1.0 mg Cu)—
skillfully and safely. It is expected that work will be performed Dissolve 1.000 g of copper metal (minimum 99.5 %) in 30 mL
in a properly equipped laboratory and that proper waste of HNO (1 + 1) and dilute to 1 L.
3
disposal procedures will be followed. Appropriate quality 8.4 Copper Standard Solution B (1 mL = 0.10 mg Cu)—
control practices must be followed, such as those described in Transfer 100 mL of Standard Solution A to a 1-L volumetric
Guide E882. flask, dilute to volume, and mix.
8.5 Copper Standard Solution C (1
...
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:E841–04 Designation:E841–12
Standard Test Method for
Determination of Copper in Iron Ores and Related Materials
1
by Atomic Absorption Spectrometry
This standard is issued under the fixed designation E841; 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
1.1This test method covers the determination of copper in iron ores, concentrates, agglomerates, and related materials in the
concentration range from 0.003 to 1%.
1.2
1.1 This test method covers the determination of copper in iron ores, concentrates, agglomerates, and related materials in the
concentration range from 0.003 % to 1 %.
NOTE 1—As used in this test method (except as related to the term “relative standard deviation”, “%” refers to a mass fraction (wt / wt %) (g/100g).
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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.
2. Referenced Documents
2
2.1 ASTM Standards:
D1193 Specification for Reagent Water
E50 PracticesforApparatus,Reagents,andSafetyConsiderationsforChemicalAnalysisofMetals,Ores,andRelatedMaterials
E135 Terminology Relating to Analytical Chemistry for Metals, Ores, and Related Materials
E173 Practice for Conducting Interlaboratory Studies of Methods for Chemical Analysis of Metals
E276 Test Method for Particle Size or ScreenAnalysis at No. 4 (4.75-mm) Sieve and Finer for Metal-Bearing Ores and Related
Materials
3
E663 Practice for Flame Atomic Absorption Analysis
E877 Practice for Sampling and Sample Preparation of Iron Ores and Related Materials for Determination of Chemical
Composition
E882 Guide for Accountability and Quality Control in the Chemical Analysis Laboratory
E1601 Practice for Conducting an Interlaboratory Study to Evaluate the Performance of an Analytical Method Practice for
Conducting an Interlaboratory Study to Evaluate the Performance of an Analytical Method
E1763 Guide for Interpretation and Use of Results from Interlaboratory Testing of Chemical Analysis Methods
3. Terminology
3.1 Definitions—For definitions of terms used in this test method, refer to Terminology E135.
4. Summary of Test Method
4.1 The sample is dissolved in hydrochloric acid HCl with the addition of a small amount of nitricHNO and hydrofluoricHF
3
acids. After evaporation to fumes with perchloric acid, HClO , the solution is diluted with water and filtered. A portion of the
4
solution is examined by atomic absorption spectroscopyspectrometry using standards containing approximately the same amount
of iron as the test sample.
1
This test method is under the jurisdiction of ASTM Committee E01 on Analytical Chemistry for Metals, Ores, and Related Materials and is the direct responsibility of
Subcommittee E01.02 on Ores, Concentrates, and Related Metallurgical Materials.
Current edition approved May 1, 2004. Published June 2004. Originally approved in 1981. Last previous edition approved in 1999 as E841–99. DOI: 10.1520/E0841-04.
Current edition approved Jan. 15, 2012. Published March 2012. Originally approved in 1981. Last previous edition approved in 2004 as E841 – 04. DOI:
10.1520/E0841-12.
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
E841–12
5. Significance and Use
5.1 In the making of iron and steel during the reduction of iron ores, copper forms alloy with iron and steel hence the necessity
of determining the copper concentrationcontent for metallurgical consideration.
5.2 This test method is intended to be used for compliance with compositional specifications for copper content. It is assumed
that all who use these procedures will be trained analysts capable of performing common laboratory procedures skillfully and
safely. It is
...
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