BS 7020-6.2:1993
Current
The latest, up-to-date edition.
Analysis of iron ores. Methods for the determination of phosphorus content. Molybdenum blue spectrophotometric method
Hardcopy , PDF
English
15-10-1993
Committees responsible
National foreword
Method
1 Scope
2 Normative references
3 Principle
4 Reagents
5 Apparatus
6 Sampling and samples
7 Procedure
8 Expression of results
9 Test report
Annexes
A (normative) Flowsheet of the procedure for the
acceptance of analytical values for test samples
B (informative) Derivation of repeatability and
permissible tolerance equations
C (informative) Precision data obtained by
international analytical trials
Tables
1 Preparation of 6 mol/l hydrochloric acid
2 Aliquots of test solution or diluted test solution
B.1 Phosphorus contents of test samples for inter-
laboratory tests
Figure
C.1 Least-squares fit of precision against X for
phosphorus
Method for the determination of phosphorus contents between 0.003% (m/m) and 2% (m/m) in iron ores.
| Committee |
W/-
|
| DevelopmentNote |
Supersedes 90/46640 DC Also numbered as ISO 4687-1 (09/2005) Reviewed and confirmed by BSI, October 2014. (09/2014)
|
| DocumentType |
Standard
|
| Pages |
14
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
This part of ISO 4687 specifies a molybdenum blue spectrophotometric method for the determination of the phosphorus content of iron ores.
This method is applicable to phosphorus contents between 0,003 % (m/m) and 2 % (m/m) in natural iron ores, iron ore concentrates and agglomerates, including sinter products.
The presence of arsenic, barium or titanium does not affect the result.
| BS 5660-1:1987 | Methods of sampling iron ores Manual method of increment sampling |
| BS 5660-2:2001 | Methods of sampling iron ores Sampling and sample preparation procedures |
| BS 7020-1:1988 | Analysis of iron ores Method for the preparation of pre-dried test samples for chemical analysis |
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