ASTM E1771-95

Standard Test Method for Determination of Copper in Anode and Blister Copper

SCOPE
1.1 This test method describes the electrolytic determination of copper in commercial anode (99.0 to 99.8%) and blister copper (92.0 to 98.0%).  
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific hazards statements are given in Section 8.

General Information

• Status: Historical
• Publication Date: 31-Dec-2000
• Technical Committee: E01 - Analytical Chemistry for Metals, Ores, and Related Materials

Relations

• Replaced By: ASTM E1771-95(2001) - Standard Test Method for Determination of Copper in Anode and Blister Copper
• Effective Date: 01-Jan-2001

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: E 1771 – 95
Standard Test Method for
Determination of Copper in Anode and Blister Copper
This standard is issued under the fixed designation E 1771; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope that users of this test method will be trained analysts capable of
performing common laboratory procedures skillfully and
1.1 This test method describes the electrolytic determination
safely. It is expected that work will be performed in a properly
of copper in commercial anode (99.0 to 99.8%) and blister
equipped laboratory.
copper (92.0 to 98.0 %).
4.2 This test method is intended to determine the copper
1.2 This standard does not purport to address all of the
content of commercial anode and blister copper. Those ele-
safety concerns, if any, associated with its use. It is the
ments that interfere are removed by precipitation or volatiliza-
responsibility of the user of this standard to establish appro-
tion, or both. Copper is electrodeposited as the metal and
priate safety and health practices and determine the applica-
weighed.
bility of regulatory limitations prior to use. Specific hazards
4.3 This method will also be found useful for the electro-
statements are given in Section 8.
lytic determination of copper in some copper alloys and scrap.
2. Referenced Documents
5. Interferences
2.1 ASTM Standards:
5.1 Commonly present elements, which co-deposit or par-
E 29 Practice for Using Significant Digits in Test Data to
2 tially co-deposit with copper are precipitated, (for example,
Determine Conformance with Specific Limiting Values
silver as the chloride), or volatilized, (for example, antimony,
E 50 Practices for Apparatus, Reagents, and Safety Precau-
3 arsenic, selenium), as metal bromides. Molybdenum also will
tions for Chemical Analysis of Metals
co-deposit with copper to produce a dark plate. When less then
E 53 Test Methods for Chemical Analysis of Copper
6 mg is present, the addition of 1 mg of sodium chloride will
E 173 Practice for Conducting Interlaboratory Studies of
prevent deposition.
Methods for Chemical Analysis of Metals
5.2 This test method does not address interferences caused
E 255 Practice for Sampling Copper and Copper Alloys for
by tungsten and bismuth.
Determination of Chemical Composition
E 478 Methods for Chemical Analysis of Copper Alloys
6. Apparatus
E 691 Practice for Conducting an Interlaboratory Study to
6.1 Electrodes for Electrolysis—Apparatus No. 9 in Prac-
Determine the Precision of a Test Method
tices E 50.
3. Summary of Test Method
7. Reagents
3.1 After dissolution of the sample, the solution is evapo-
7.1 Acetone, (CH COCH ).
3 3
rated to dryness and fumes expelled by heat. The salt is
7.2 Ammonium Sulfate, [(NH ) SO ].
4 2 4
dissolved in nitric acid, the solution is filtered, the acidity is
7.3 Bromine, (Br ).
adjusted, and the copper is electrolytically plated and weighed
7.4 Ethanol,(C H OH).
2 5
as the metal.
7.5 Hydrobromic Acid, (HBr), 48%.
4. Significance and Use
8. Hazards
4.1 This test method for the determination of copper in
8.1 Bromine (Br )—Liquid bromine vaporizes at room tem-
anode (99.0 to 99.8 %) and blister copper (92.0 to 98.0 %) is
perature. Fumes attack organic material and are highly irritat-
primarily intended as a referee method, to test such materials
ing to eyes and lungs. The liquid will cause serious burns and
for compliance with compositional specifications. It is assumed
blisters if allowed to contact skin or other soft tissues.
Inhalation of vapors may cause pulmonary edema and death.
This test method is under the jurisdiction of ASTM Committee E-1 on
Ingestion may cause severe gastroenteritis and death.
Analytical Chemistry for Metals, Ores, and Related Materials and is the direct
responsibility of Subcommittee E01.07 on Cu and Cu Alloys.
NOTE 1—Warning: : Work only in an efficient exhaust hood with
Current edition approved Nov. 10, 1995. Published January 1996.
proper protective equipment. Familiarity with proper first-aid procedure is
Annual Book of ASTM Standards, Vol 14.02.
essential before beginning work.
Annual Book of ASTM Standards, Vol 03.05.
Annual Book of ASTM Standards, Vol 03.06.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
E 1771
8.2 Hydrobromic Acid (HBr)—Liquid hydrobromic acid μm porosity membrane filter , or equivalent, washing the
and its fumes are highly irritating to eyes, skin, mucous beaker and wall of the filter holder carefully with distilled
water.
membranes, and the respiratory system. HBr is a strong acid,
11.9 Transfer the residue from the filtering apparatus into a
with properties similar to hydrochloric acid.
250-mL beaker. Wash off the membrane with distilled water,
8.3 For precautions to be observed in the use of certain
being careful to control total to 50-mL maximum. Reserve for
reagents and equipment in this test method, refer to Practices
11.14.
E 50.
11.10 To the filtrate from 11.8, add 5 to 10 g of (HN ) SO ,
4 2 4
10 mL of sulfuric acid {H SO }, (1 + 1), and agitate with a
2 4
9. Sampling
stirring rod until all salts are in solution. Wash down the
9.1 For procedures in sampling, refer to Practice E 255.
stirring rod as it is withdrawn, and dilute the solution to
However, this practice does not supersede any sampling
approximately 200 mL.
requirement in a specific ASTM material specification nor
11.11 With the electrolyzing current off, position the tared
preclude a procedure agreed upon by the producer, supplier, or
cathode and anode in the solution, and if necessary, add water
purchaser. until the cathode is completely immersed. Cover the beaker
with a split cover glass.
10. Preparation of Electrodes 11.12 El
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