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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.
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 |
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
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
ICS Code
ICS Number Code 71.040.50 (Physicochemical methods of analysis)
UNSPSC Code
UNSPSC Code 12141711(Copper Cu); 41115407(Atomic absorption AA spectrometers)
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DOI: 10.1520/E1898-13
Citation Format
ASTM E1898-13, Standard Test Method for Determination of Silver in Copper Concentrates by Flame Atomic Absorption Spectrometry, ASTM International, West Conshohocken, PA, 2013, www.astm.org
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