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  • BS ISO 9517:2007

    Current The latest, up-to-date edition.

    Iron ores. Determination of water-soluble chloride content. Ion-selective electrode method

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  31-05-2007

    Publisher:  British Standards Institution

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

    Foreword
    1 Scope
    2 Normative references
    3 Principle
    4 Reagents
    5 Apparatus
    6 Sampling and samples
      6.1 Laboratory sample
      6.2 Preparation of predried test samples
    7 Procedure
      7.1 Number of determinations
      7.2 Blank test and check test
      7.3 Temperature setting
          7.3.1 Magnetic stirrer/hotplate
          7.3.2 Laboratory hotplate
      7.4 Preliminary tests
          7.4.1 Electrode-system check test
          7.4.2 Contamination check test
      7.5 Test portion
      7.6 Determination
          7.6.1 Leaching of water-soluble chloride
          7.6.2 Filtration
          7.6.3 Treatment of the test solution
          7.6.4 Measurement of electrode potential
          7.6.5 Preparation of calibration graph
          7.6.6 Measurement of chloride concentration
    8 Expression of results
      8.1 Calculation of mass fraction of water-soluble chloride
      8.2 General treatment of results
          8.2.1 Repeatability and permissible tolerance
          8.2.2 Determination of analytical result
          8.2.3 Between-laboratories precision
          8.2.4 Check for trueness
          8.2.5 Calculation of final result
    9 Test report
    Annex A (normative) Flowsheet of the procedure for the
            acceptance of analytical values for test samples
    Annex B (informative) Derivation of repeatability and
            permissible tolerance equations
    Annex C (informative) Graphical presentation of precision
            data obtained by international analytical trials

    Abstract - (Show below) - (Hide below)

    Describes an ion-selective electrode method for the determination of the mass fraction of water-soluble chloride in iron ores.

    Scope - (Show below) - (Hide below)

    This International Standard specifies an ion-selective electrode method for the determination of the mass fraction of water-soluble chloride in iron ores. This method is applicable to a mass-fraction range of 0,007%to 0,1%of water-soluble chloride in natural iron ores, concentrates and agglomerates, including sinter products.

    NOTE Water-soluble chloride is the part of the mass fraction of chloride in an iron ore that is extractable by leaching with aqueous solution under substantially neutral conditions.

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

    Committee W/-
    Development Note Supersedes BS 7020-20(1990) & 06/30145727 DC. (05/2007)
    Document Type Standard
    Publisher British Standards Institution
    Status Current
    Supersedes

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

    ISO 3082:2017 Iron ores — Sampling and sample preparation procedures
    ISO 1042:1998 Laboratory glassware One-mark volumetric flasks
    ISO 648:2008 Laboratory glassware — Single-volume pipettes
    ISO 7764:2006 Iron ores Preparation of predried test samples for chemical analysis
    View more information

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