ASTM E1070-11
(Test Method)Standard Test Method for Determination of Phosphorus in Iron Ores by Phospho-Molybdenum-Blue Spectrophotometry
Standard Test Method for Determination of Phosphorus in Iron Ores by Phospho-Molybdenum-Blue Spectrophotometry
SIGNIFICANCE AND USE
This test method for the analysis of iron ore concentrates and agglomerates is primarily intended as a referee method to test for compliance with compositional specifications. It is assumed that users of this test method 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 shall be followed, such as those described in Guide E882.
The determination of this element is needed for international trade and primary iron and steel making.
SCOPE
1.1 This test method covers the determination of phosphorus in iron ores, concentrates, and agglomerates in the concentration range from 0.005 to 1.0 % phosphorus.
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 test method has been evaluated in accordance with Practice E1601 and Guide E1763. Unless otherwise noted in the precision and bias section, the lower limit in the scope of each method specifies the lowest analyte content that may be analyzed with acceptable error (defined as a nominal 5 % risk of obtaining a 50 % or larger relative difference in results on the same test sample in two laboratories).
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.
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Designation: E1070 − 11
Standard Test Method for
Determination of Phosphorus in Iron Ores by Phospho-
1
Molybdenum-Blue Spectrophotometry
This standard is issued under the fixed designation E1070; 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 Ores and Related Materials for Determination of Chemi-
cal Composition
1.1 This test method covers the determination of phospho-
E882 Guide for Accountability and Quality Control in the
rus in iron ores, concentrates, and agglomerates in the concen-
Chemical Analysis Laboratory
tration range from 0.005 to 1.0 % phosphorus.
E1601 Practice for Conducting an Interlaboratory Study to
1.2 The values stated in SI units are to be regarded as
Evaluate the Performance of an Analytical Method
standard. No other units of measurement are included in this
E1763 Guide for Interpretation and Use of Results from
standard.
Interlaboratory Testing of Chemical Analysis Methods
1.3 This test method has been evaluated in accordance with
3. Terminology
Practice E1601 and Guide E1763. Unless otherwise noted in
the precision and bias section, the lower limit in the scope of
3.1 Definitions—For definitions of terms used in this test
each method specifies the lowest analyte content that may be
method, refer to Terminology E135.
analyzed with acceptable error (defined as a nominal 5 % risk
of obtaining a 50 % or larger relative difference in results on
4. Summary of Test Method
the same test sample in two laboratories).
4.1 Thesampleisfusedinazirconiumcruciblewithsodium
1.4 This standard does not purport to address all of the
peroxide.The melt is dissolved in water and hydrochloric acid.
safety concerns, if any, associated with its use. It is the
In a suitable aliquot, the molybdenum blue complex is formed
responsibility of the user of this standard to establish appro-
by the addition of ammonium molybdate-hydrazine sulfate
priate safety and health practices and determine the applica-
solution. The absorbance of the phospho-molybdenum-blue
bility of regulatory limitations prior to use.
complex is measured at 725 nm.
2. Referenced Documents
5. Significance and Use
2
2.1 ASTM Standards:
5.1 Thistestmethodfortheanalysisofironoreconcentrates
D1193 Specification for Reagent Water
and agglomerates is primarily intended as a referee method to
E50 Practices for Apparatus, Reagents, and Safety Consid-
test for compliance with compositional specifications. It is
erations for Chemical Analysis of Metals, Ores, and
assumed that users of this test method will be trained analysts
Related Materials
capable of performing common laboratory procedures skill-
E60 Practice for Analysis of Metals, Ores, and Related
fully and safely. It is expected that work will be performed in
Materials by Spectrophotometry
a properly-equipped laboratory and that proper waste disposal
E135 Terminology Relating to Analytical Chemistry for
procedures will be followed. Appropriate quality control prac-
Metals, Ores, and Related Materials
tices shall be followed, such as those described in Guide E882.
E877 Practice for Sampling and Sample Preparation of Iron
5.2 The determination of this element is needed for inter-
national trade and primary iron and steel making.
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
6. Interferences
responsibility of Subcommittee E01.02 on Ores, Concentrates, and Related Metal-
lurgical Materials.
6.1 Elements normally found in iron ores do not interfere
Current edition approved Sept. 1, 2011. Published September 2011. Originally
excepting arsenic giving positive interference (0.01 %
approved in 1985. Last previous edition approved in 2005 as E1070 – 00 (2005).
As = 0.001 % P).
DOI: 10.1520/E1070-11.
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
7. Apparatus
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 7.1 Zirconium Crucible, 50 mL capacity.
Copyright ©ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA19428-2959. United States
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E1070 − 11
7.2 Spectrophotometer—Visible spectrophotometer capable 9. Hazards
of measuring absorbance at the 725 nm wavelength using a
9.1 For precautions to be observed in this method, refer to
1-cm path length cell in accordance with Practice E60.
Practices E50.
8. Reagents and Materials 10. Sampling and Sample Preparation
8.1 Purit
...
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:E1070–00(Reapproved2005) Designation:E1070–11
Standard Test Method for
Determination of Phosphorus in Iron Ores by Photometric
1
MethodPhospho-Molybdenum-Blue Spectrophotometry
This standard is issued under the fixed designation E1070; 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
1.1 This test method covers the determination of phosphorus in iron ores, concentrates, and agglomerates in the concentration
range from 0.005 to 1.0 % phosphorus.
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
1.3 This test method has been evaluated in accordance with Practice E1601 and Guide E1763. Unless otherwise noted in the
precision and bias section, the lower limit in the scope of each method specifies the lowest analyte content that may be analyzed
with acceptable error (defined as a nominal 5 % risk of obtaining a 50 % or larger relative difference in results on the same test
sample in two laboratories).
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.
2. Referenced Documents
2
2.1 ASTM Standards:
D1193 Specification for Reagent Water
E50 PracticesforApparatus,Reagents,andSafetyConsiderationsforChemicalAnalysisofMetals,Ores,andRelatedMaterials
E60 Practice for Analysis of Metals, Ores, and Related Materials by Spectrophotometry
E135 Terminology Relating to Analytical Chemistry for Metals, Ores, and Related Materials
E877 Practice for Sampling and Sample Preparation of Iron Ores and Related Materials for Determination of Chemical
Composition
E882 Guide forAccountability and Quality Control in the ChemicalAnalysis Laboratory Guide forAccountability and Quality
Control in the Chemical Analysis Laboratory
E1601 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 fused in a zirconium crucible with sodium peroxide. The melt is dissolved in water and hydrochloric acid.
Inasuitablealiquot,themolybdenumbluecomplexisformedbytheadditionofammoniummolybdate-hydrazinesulfatesolution.
The absorbance of the phospho-molybdenum-blue complex is measured at 725 nm.
5. Significance and Use
5.1 This test method for the analysis of iron ore concentrates and agglomerates is primarily intended as a referee method to test
for compliance with compositional specifications. It is assumed that users of this test method will be trained analysts capable of
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 Oct. 1, 2005. Published October 2005. Originally approved in 1985. Last previous edition approved in 2000 as E1070–00. DOI:
10.1520/E1070-00R05.
Current edition approved Sept. 1, 2011. Published September 2011. Originally approved in 1985. Last previous edition approved in 2005 as E1070 – 00 (2005). DOI:
10.1520/E1070-11.
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 ----------------------
E1070–11
performing common laboratory procedures skillfully and safely. It is expected that work will be performed in a properly-equipped
laboratoryandthatproperwastedisposalprocedureswillbefollowed.Appropriatequalitycontrolpracticesshallbefollowed,such
as those described in Guide E882.
5.2 The determination of this element is needed for international trade and primary iron and steel makin
...
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