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AS 3719.1-1989
[Current]Aluminium and aluminium alloys, Part 1: Determination of iron — Spectrophotometric method
Sets out a spectrophotometric method for the determination of iron in aluminium and aluminium alloys in the range 0.05 percent to 2.5 percent. This Standard is technically equivalent to ISO 793:1973 but contains precision data obtained from an interlaboratory test program carried out in Australia.
Published: 13/10/1989
Pages: 5
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 SCOPE
2 REFERENCED DOCUMENTS
3 PRINCIPLE
4 REAGENTS
4.1 General requirements
4.2 Solutions
4.2.1 Hydrochloric acid (ϱ201.16 g/mL)
4.2.2 Hydrochloric acid (1+1)
4.2.3 Sodium hydroxide solution (200 g/L)
4.2.4 Mixed reagent
4.2.5 Hydrogen peroxide (100 vol)
4.2.6 Thiourea solution (1 mol/L)
4.3 Standard solutions
4.3.1 Stock iron solution (1 mL ≡ 0.2 mg Fe)
4.3.2 Standard iron solution (1 mL ≡ 0.01 mg Fe)
5 APPARATUS
5.1 General
5.2 Glassware
5.3 Spectrophotometric cells
5.4 Spectrophotometer
6 SAMPLING
7 PROCEDURE
7.1 Number of determinations
7.2 Blank test
7.3 Check test
7.4 Dissolution of the test portion
7.5 Colour development
7.6 Spectrophotometric measurement
7.7 Preparation of calibration curve
8 CALCULATION AND EXPRESSION OF RESULTS
9 PRECISION
10 ACCEPTANCE OF ANALYTICAL VALUES
10.1 Single determination
10.2 Replicate determinations
10.3 Acceptance of check test result
11 TEST REPORT
APPENDIX A
A1 PRINCIPLE
A2 MODIFICATIONS TO THE PROCEDURE
APPENDIX B
B1 PRINCIPLE
B2 MODIFICATIONS TO THE PROCEDURE
Cited references in this standard
AS CK 19
Code of recommended practice for the chemical analysis of materials by ultraviolet/visible spectrophotometry
[Withdrawn]
Chemical analysis — Interlaboratory test programs — For determining precision of analytical method(s) — Guide to the planning and conduct
[Current]
Aluminium and aluminium alloys — Sampling for chemical and spectrochemical analysis
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