ASTM E1070-17a
(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
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 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.
5.2 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 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.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: E1070 − 17a
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 E50 Practices for Apparatus, Reagents, and Safety Consid-
erations for Chemical Analysis of Metals, Ores, and
1.1 This test method covers the determination of phospho-
Related Materials
rus in iron ores, concentrates, and agglomerates in the range
E60 Practice for Analysis of Metals, Ores, and Related
from 0.005 % to 1.0 % phosphorus.
Materials by Spectrophotometry
1.2 The values stated in SI units are to be regarded as
E135 Terminology Relating to Analytical Chemistry for
standard. No other units of measurement are included in this
Metals, Ores, and Related Materials
standard.
E877 Practice for Sampling and Sample Preparation of Iron
1.3 This test method has been evaluated in accordance with Ores and Related Materials for Determination of Chemi-
cal Composition and Physical Properties
Practice E1601 and Guide E1763. Unless otherwise noted in
the precision and bias section, the lower limit in the scope of E882 Guide for Accountability and Quality Control in the
Chemical Analysis Laboratory
each method specifies the lowest analyte content that may be
analyzed with acceptable error (defined as a nominal 5 % risk E1601 Practice for Conducting an Interlaboratory Study to
Evaluate the Performance of an Analytical Method
of obtaining a 50 % or larger relative difference in results on
the same test sample in two laboratories). E1763 Guide for Interpretation and Use of Results from
Interlaboratory Testing of Chemical Analysis Methods
1.4 This standard does not purport to address all of the
3
(Withdrawn 2015)
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
3. Terminology
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. 3.1 Definitions—For definitions of terms used in this test
1.5 This international standard was developed in accor- method, refer to Terminology E135.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the 4. Summary of Test Method
Development of International Standards, Guides and Recom-
4.1 Thesampleisfusedinazirconiumcruciblewithsodium
mendations issued by the World Trade Organization Technical
peroxide (Na O ). The melt is dissolved in water and HCl. In
2 2
Barriers to Trade (TBT) Committee.
a suitable aliquot, the molybdenum blue complex is formed by
the addition of ammonium molybdate-hydrazine sulfate solu-
2. Referenced Documents
tion. The absorbance of the phospho-molybdenum-blue com-
2
2.1 ASTM Standards:
plex is measured at 725 nm.
D1193 Specification for Reagent Water
E29 Practice for Using Significant Digits in Test Data to
5. Significance and Use
Determine Conformance with Specifications
5.1 Thistestmethodfortheanalysisofironoreconcentrates
and agglomerates is primarily intended as a referee method to
1
test for compliance with compositional specifications. It is
This test method is under the jurisdiction of ASTM Committee E01 on
Analytical Chemistry for Metals, Ores, and Related Materials and is the direct
assumed that users of this test method will be trained analysts
responsibility of Subcommittee E01.02 on Ores, Concentrates, and Related Metal-
capable of performing common laboratory procedures skill-
lurgical Materials.
fully and safely. It is expected that work will be performed in
Current edition approved Nov. 15, 2017. Published December 2017. Originally
approved in 1985. Last previous edition approved in 2017 as E1070 – 17. DOI: a properly-equipped laboratory and that proper waste disposal
10.1520/E1070-17A.
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 The last approved version of this historical standard is referenced on
the ASTM website. www.astm.org.
Copyright ©ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA19428-2959. United States
1
---------------------- Page: 1 ----------------------
E1070 − 17a
procedures will be followed. Appropriate quality control prac-
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM 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 − 17 E1070 − 17a
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
1.1 This test method covers the determination of phosphorus in iron ores, concentrates, and agglomerates in the 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.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
D1193 Specification for Reagent Water
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E50 Practices for Apparatus, Reagents, and Safety Considerations for Chemical Analysis of Metals, Ores, and Related Materials
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 and Physical Properties
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
E1763 Guide for Interpretation and Use of Results from Interlaboratory Testing of Chemical Analysis Methods (Withdrawn
3
2015)
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 (Na O ). The melt is dissolved in water and HCl. In a
2 2
suitable aliquot, the molybdenum blue complex is formed by the addition of ammonium molybdate-hydrazine sulfate solution. The
absorbance of the phospho-molybdenum-blue complex is measured at 725 nm.
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, 2017Nov. 15, 2017. Published July 2017December 2017. Originally approved in 1985. Last previous edition approved in 20112017 as
E1070 – 11.17. DOI: 10.1520/E1070-17.10.1520/E1070-17A.
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 Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
The last approved version of this historical standard is referenced on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
E1070 − 17a
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
performing common laboratory procedures skillfully and safely
...
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