BS ISO 9517:2007
Current
The latest, up-to-date edition.
Iron ores. Determination of water-soluble chloride content. Ion-selective electrode method
Hardcopy , PDF
English
31-05-2007
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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 |
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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