ASTM E1898-21

Standard Test Method for Determination of Silver in Copper Concentrates by Flame Atomic Absorption Spectrometry

SIGNIFICANCE AND USE
5.1 In the primary metallurgical processes used by the mineral processing industry for copper bearing ores, copper and silver associated with sulfide mineralization are concentrated by the process of flotation for recovery of the metals.  
5.2 This test method is a comparative method and is intended to be a referee method for compliance with compositional specifications for metal content or to monitor processes.  
5.3 It is assumed that all who use this method will be trained analysts capable of performing 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 silver in the range of 13 μg/g to 500 μg/g by acid dissolution of the silver and measurement by atomic absorption spectrometry. Copper concentrates are internationally traded within the following content ranges:    
Element  
Unit  
Content Range  
Aluminum  
%  
0.05  
to  
2.50  
Antimony  
%  
0.0001  
to  
4.50  
Arsenic  
%  
0.01  
to  
0.50  
Barium  
%  
0.003  
to  
0.10  
Bismuth  
%  
0.001  
to  
0.16  
Cadmium  
%  
0.0005  
to  
0.04  
Calcium  
%  
0.05  
to  
4.00  
Carbon  
%  
0.10  
to  
0.90  
Chlorine  
%  
0.001  
to  
0.006  
Chromium  
%  
0.0001  
to  
0.10  
Cobalt  
%  
0.0005  
to  
0.20  
Copper  
%  
10.0  
to  
44.0  
Fluorine  
%  
0.001  
to  
0.10  
Gold  
μg/g  
1.40  
to  
100.0  
Iron  
%  
12.0  
to  
30.0  
Lead  
%  
0.01  
to  
1.40  
Magnesium  
%  
0.02  
to  
2.00  
Manganese  
%  
0.009  
to  
0.10  
Mercury  
μg/g  
0.05  
to  
50.0  
Molybdenum  
%  
0.002  
to  
0.25  
Nickel  
%  
0.0001  
to  
0.08  
Silicon  
%  
0.40  
to  
20.0  
Silver  
μg/g  
18.0  
to  
8000  
Sulfur  
%  
10.0  
to  
36.0  
Tin  
%  
0.004  
to  
0.012  
Zinc  
%  
0.005  
to  
4.30  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 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.

General Information

• Status: Published
• Publication Date: 30-Sep-2021
• ICS: 71.040.50 - Physicochemical methods of analysis
• Technical Committee: E01 - Analytical Chemistry for Metals, Ores, and Related Materials
• Drafting Committee: E01.02 - Ores, Concentrates, and Related Metallurgical Materials

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: E1898 − 21
Standard Test Method for
Determination of Silver in Copper Concentrates by Flame
1
Atomic Absorption Spectrometry
This standard is issued under the fixed designation E1898; 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 1.4 This international standard was developed in accor-
dance with internationally recognized principles on standard-
1.1 This test method covers the determination of silver in
ization established in the Decision on Principles for the
the range of 13 µg/g to 500 µg/g by acid dissolution of the
Development of International Standards, Guides and Recom-
silver and measurement by atomic absorption spectrometry.
mendations issued by the World Trade Organization Technical
Copper concentrates are internationally traded within the
Barriers to Trade (TBT) Committee.
following content ranges:
Element Unit Content Range
2. Referenced Documents
Aluminum % 0.05 to 2.50
2
Antimony % 0.0001 to 4.50
2.1 ASTM Standards:
Arsenic % 0.01 to 0.50
D1193 Specification for Reagent Water
Barium % 0.003 to 0.10
E29 Practice for Using Significant Digits in Test Data to
Bismuth % 0.001 to 0.16
Cadmium % 0.0005 to 0.04
Determine Conformance with Specifications
Calcium % 0.05 to 4.00
E50 Practices for Apparatus, Reagents, and Safety Consid-
Carbon % 0.10 to 0.90
erations for Chemical Analysis of Metals, Ores, and
Chlorine % 0.001 to 0.006
Chromium % 0.0001 to 0.10
Related Materials
Cobalt % 0.0005 to 0.20
E135 Terminology Relating to Analytical Chemistry for
Copper % 10.0 to 44.0
Metals, Ores, and Related Materials
Fluorine % 0.001 to 0.10
Gold µg/g 1.40 to 100.0
E882 Guide for Accountability and Quality Control in the
Iron % 12.0 to 30.0
Chemical Analysis Laboratory
Lead % 0.01 to 1.40
Magnesium % 0.02 to 2.00 E1601 Practice for Conducting an Interlaboratory Study to
Manganese % 0.009 to 0.10
Evaluate the Performance of an Analytical Method
Mercury µg/g 0.05 to 50.0
E1763 Guide for Interpretation and Use of Results from
Molybdenum % 0.002 to 0.25
Interlaboratory Testing of Chemical Analysis Methods
Nickel % 0.0001 to 0.08
3
Silicon % 0.40 to 20.0
(Withdrawn 2015)
Silver µg/g 18.0 to 8000
Sulfur % 10.0 to 36.0
3. Terminology
Tin % 0.004 to 0.012
Zinc % 0.005 to 4.30
3.1 Definitions—For definitions of terms used in this test
1.2 The values stated in SI units are to be regarded as
method, refer to Terminology E135.
standard. No other units of measurement are included in this
4. Summary of Test Method
standard.
1.3 This standard does not purport to address all of the 4.1 The analyst has the option of either digesting the sample
safety concerns, if any, associated with its use. It is the in HNO and HCl or HNO and HClO , depending on their
3 3 4
responsibility of the user of this standard to establish appro- preference and equipment availability. The filtered solutions
priate safety, health, and environmental practices and deter- are aspirated into an air-acetylene flame of an atomic absorp-
mine the applicability of regulatory limitations prior to use.
tion spectrometer. Spectral energy at approximately 328.1 nm
from a silver hollow cathode lamp is passed through the flame
1
This test method is under the jurisdiction of ASTM Committee E01 on
2
Analytical Chemistry for Metals, Ores, and Related Materials and is the direct For referenced ASTM standards, visit the ASTM website, www.astm.org, or
responsibility of Subcommittee E01.02 on Ores, Concentrates, and Related Metal- contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
lurgical Materials. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Oct. 1, 2021. Published October 2021. Originally the ASTM website.
3
approved in 1997. Last previous edition approved in 2013 as E1898 – 13. DOI: The last approved version of this historical standard is referenced on
10.1520/E1898-21. 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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E1898 − 21
and the absorbance is measured. This absorbance is compared 8.4 Purity of Reagents—Reagent grade chemicals shall be
with the absorbance of a series of standard calibration solu- used in all tests. Unless otherwise indicated, it is intended that
tions. all reagents conform to the specifications of the Committee on
Analytical Reagents of the American
...

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: E1898 − 13 E1898 − 21
Standard Test Method for
Determination of Silver in Copper Concentrates by Flame
1
Atomic Absorption Spectrometry
This standard is issued under the fixed designation E1898; 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 silver in the range of 13 μg/g to 500 μg/g by acid dissolution of the silver and
measurement by atomic absorption spectrometry. Copper concentrates are internationally traded within the following content
ranges:
Element Unit Content Range
Aluminum % 0.05 to 2.50
Antimony % 0.0001 to 4.50
Arsenic % 0.01 to 0.50
Barium % 0.003 to 0.10
Bismuth % 0.001 to 0.16
Cadmium % 0.0005 to 0.04
Calcium % 0.05 to 4.00
Carbon % 0.10 to 0.90
Chlorine % 0.001 to 0.006
Chromium % 0.0001 to 0.10
Cobalt % 0.0005 to 0.20
Copper % 10.0 to 44.0
Fluorine % 0.001 to 0.10
Gold μg/g 1.40 to 100.0
Iron % 12.0 to 30.0
Lead % 0.01 to 1.40
Magnesium % 0.02 to 2.00
Manganese % 0.009 to 0.10
Mercury μg/g 0.05 to 50.0
Molybdenum % 0.002 to 0.25
Nickel % 0.0001 to 0.08
Silicon % 0.40 to 20.0
Silver μg/g 18.0 to 8000
Sulfur % 10.0 to 36.0
Tin % 0.004 to 0.012
Zinc % 0.005 to 4.30
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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to its use.
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 April 1, 2013Oct. 1, 2021. Published June 2013October 2021. Originally approved in 1997. Last previous edition approved in 20072013 as
E1898 - 07.E1898 – 13. DOI: 10.1520/E1898-13.10.1520/E1898-21.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E1898 − 21
1.4 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
E135 Terminology Relating to Analytical Chemistry for Metals, Ores, and Related Materials
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 analyst has the option of either digesting the sample in HNO and HCl or HNO and HClO , depending on their preference
3 3 4
and equipment availability. The filtered solutions are aspirated into an air-acetylene flame of an atomic absorption spectrometer.
Spectral energy at approximately 328.1 nm from a silver hollow cathode lamp is passed through the flame and the absorbance is
measured. This absorbance is compared with the absorbance of a series of standard calibration solutions.
5. Significance and Use
5.1 In the primary metallurgical processes used by the mineral processing industry for copper bearing ores, copper and silver
associated with sulfide mineralization are concentrated by the process of flotation for recovery of the metals.
5.2 This test method is a comparative method and is intended to be a referee method for compliance with compo
...