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    ASTM E1898 - 13

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

    Active Standard ASTM E1898 | Developed by Subcommittee: E01.02

    Book of Standards Volume: 03.05

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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


    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 its use.


    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)

    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/E1898

    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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