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  • BS 7020-13:1988

    Current The latest, up-to-date edition.

    Analysis of iron ores Method for the determination of arsenic content. Spectrophotometric method

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  31-01-1989

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    National foreword
    Committees responsible
    Method
    1. Scope and field of application
    2. References
    3. Principle
    4. Reagents
    5. Apparatus
    6. Sampling and samples
    7. Procedure
    8. Expression of results
    9. Test report
    Annexes
    A. Flowsheet of the procedure for the acceptance of
        analytical values for test samples
    B. Derivation of repeatability and permissible
        tolerance equations
    C. Graphical presentation of precision data obtained
        by international analytical trial
    Tables
    1. Aliquot portions of distillate
    2. Test samples for interlaboratory tests
    Figures
    1. Arsenic distillation apparatus
    2. Least-squares fit of precision against X for arsenic

    Abstract - (Show below) - (Hide below)

    Applicable to arsenic contents in the range 0.0001 to 0.1% (m/m) in natural iron ores, and iron ore concentrates and agglomerates including sinter products.

    Scope - (Show below) - (Hide below)

    This International Standard specifies a molybdenum blue spectrophotometric method for the determination of the arsenic content of iron ores.

    This method is applicable to a concentration range of 0,000 1 to 0,1 % (m/m) (1 to 1 000 µg/g) of arsenic in natural iron ores, and iron ore concentrates and agglomerates including sinter products.

    General Product Information - (Show below) - (Hide below)

    Committee W/-
    Development Note Supersedes 86/38439 DC Also numbered as ISO 7834 (09/2005) Reviewed and confirmed by BSI, October 2014. (09/2014)
    Document Type Standard
    Publisher British Standards Institution
    Status Current

    Standards Referencing This Book - (Show below) - (Hide below)

    BS 5561:1979 Specification for spools for copper wire
    BS 5660-1:1987 Methods of sampling iron ores Manual method of increment sampling
    ISO 5725:1986 Precision of test methods Determination of repeatability and reproducibility for a standard test method by inter-laboratory tests
    BS 5660-2:1987 Methods of sampling iron ores Mechanical method of increment sampling and sample preparation
    BS 7020-1:1988 Analysis of iron ores Method for the preparation of pre-dried test samples for chemical analysis
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