BS ISO 9683-1:2006
Current
The latest, up-to-date edition.
Iron ores. Determination of vanadium BPHA spectrophotometric method
Hardcopy , PDF
English
04-30-2007
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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 Test portion
7.3 Blank test and check test
7.4 Determination
7.4.1 Decomposition of the test portion
7.4.2 Colour development and extraction
7.4.3 Spectrophotometric measurement
7.4.4 Calibration
8 Expression of results
8.1 Calculation of mass fraction of vanadium
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
8.3 Oxide factor
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 equations
Annex C (informative) Precision data obtained by
international analytical trials
Specifies a spectrophotometric method using N-benzoyl-phenylhydroxylamine (BPHA) for the determination of the mass fraction of vanadium in iron ores.
| Committee |
W/-
|
| DevelopmentNote |
Supersedes BS 7020-11.1(1993) and 06/30145863 DC. (04/2007)
|
| DocumentType |
Standard
|
| Pages |
20
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This part of ISO9683 specifies a spectrophotometric method using N-benzoyl-phenylhydroxylamine (BPHA) for the determination of the mass fraction of vanadium in iron ores.
This method is applicable to mass fractions of vanadium between 0,005 and 0,5%in natural iron ores, iron ore concentrates and agglomerates, including sinter products.
| Standards | Relationship |
| ISO 9683-1:2006 | 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 |
| ISO 3696:1987 | Water for analytical laboratory use — Specification and test methods |
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