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

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

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

Committee	W/-
DevelopmentNote	Supersedes BS 7020-20(1990) & 06/30145727 DC. (05/2007)
DocumentType	Standard
Pages	20
PublisherName	British Standards Institution
Status	Current
Supersedes	BS 7020-20:1990 06/30145727 DC : DRAFT FEB 2006

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.

Standards	Relationship
ISO 9517:2007	Identical

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

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BS ISO 9517:2007

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

Table of Contents

Abstract

General Product Information

Scope

International Equivalents

Standards Referencing This Book

Category

Subcategory