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AS 1696.2-1997
[Current]Copper, Part 2: Determination of copper content — Electrogravimetric method
Specifies an electrogravimetric method for the determination of copper content in blister, anode and high grade copper, where the content of copper is greater than 97 percent. The method is particularly applicable where impurities would normally interfere with the electrode deposition of copper.
Published: 05/07/1997
Pages: 6
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 Nitric acid (ρ20 1.42 g/mL)
4.2.2 Nitric acid (1 + 3)
4.2.3 Ammonium hydroxide solution (ρ20 0.88 g/mL)
4.2.4 Potassium persulfate
4.2.5 Manganese(II) nitrate (50%)
4.2.6 Potassium permanganate (12.5 g/L)
4.2.7 Hydrochloric acid (ρ20 1.16–1.18 g/mL)
4.2.8 Hydrochloric acid (3 + 1)
4.2.9 Hydrochloric acid (1 + 99)
4.2.10 Sulfuric acid (ρ20 1.84 g/mL)
4.2.11 Sulfamic acid solution (saturated)
4.2.12 Ethanol 95% (V/V)
4.2.13 Standard copper solution (1 mL ≡ 50 µg Cu)
4.2.14 Nitric acid/sulfuric acid mixed acid solution
5 APPARATUS
5.1 Volumetric glassware
5.2 Electrolytic equipment
5.2.1 Cathode
5.2.2 Anode
5.3 Flame atomic absorption spectrometer
6 SAMPLING
7 PROCEDURE
7.1 Number of determinations
7.2 Blank test
7.3 Check test
7.4 Electrolytic determination of copper
7.5 Determination of residual copper in electrolyte
7.5.1 General
7.5.2 Calibration
7.5.3 Determination
8 CALCULATION OF RESULTS
8.1 Residual copper
8.2 Total copper
9 PRECISION
10 ACCEPTANCE OF ANALYTICAL VALUES
10.1 Single test sample
10.2 Replicate determinations
10.3 Acceptance of reference material values
11 TEST REPORT
Cited references in this standard
[Withdrawn]
Chemical analysis — Interlaboratory test programs — For determining precision of analytical method(s) — Guide to the planning and conduct
[Current]
Copper and copper alloys — Sampling for chemical and spectrochemical analysis, and physical testing
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