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BS ISO 9517:2007

Current
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

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.

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.

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

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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