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ASTM E1898-21

Standard Test Method for Determination of Silver in Copper Concentrates by Flame Atomic Absorption Spectrometry
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1.1 This test method covers the determination of silver in the range of 13 μg/g to 500 μg/g by acid dissolution of the silver and measurement by atomic absorption spectrometry.

Copper concentrates are internationally traded within the following content ranges:

Element

Unit

Content Range

Aluminum

%

0.05

to

2.50

Antimony

%

0.0001

to

4.50

Arsenic

%

0.01

to

0.50

Barium

%

0.003

to

0.10

Bismuth

%

0.001

to

0.16

Cadmium

%

0.0005

to

0.04

Calcium

%

0.05

to

4.00

Carbon

%

0.10

to

0.90

Chlorine

%

0.001

to

0.006

Chromium

%

0.0001

to

0.10

Cobalt

%

0.0005

to

1.1 This test method covers the determination of silver in the range of 13 μg/g to 500 μg/g by acid dissolution of the silver and measurement by atomic absorption spectrometry.

Copper concentrates are internationally traded within the following content ranges:

Element

Unit

Content Range

Aluminum

%

0.05

to

2.50

Antimony

%

0.0001

to

4.50

Arsenic

%

0.01

to

0.50

Barium

%

0.003

to

0.10

Bismuth

%

0.001

to

0.16

Cadmium

%

0.0005

to

0.04

Calcium

%

0.05

to

4.00

Carbon

%

0.10

to

0.90

Chlorine

%

0.001

to

0.006

Chromium

%

0.0001

to

0.10

Cobalt

%

0.0005

to

0.20

Copper

%

10.0

to

44.0

Fluorine

%

0.001

to

0.10

Gold

ÎĽg/g

1.40

to

100.0

Iron

%

12.0

to

5.1 In the primary metallurgical processes used by the mineral processing industry for copper bearing ores, copper and silver associated with sulfide mineralization are concentrated by the process of flotation for recovery of the metals.

5.2 This test method is a comparative method and is intended to be a referee method for compliance with compositional specifications for metal content or to monitor processes.

5.3 It is assumed that all who use this method will be trained analysts capable of performing skillfully and safely. It is expected that work will be performed in a properly equipped laboratory and that proper waste disposal procedures will be followed. Appropriate quality control practices must be followed such as those described in Guide E882.

SDO ASTM: ASTM International
Document Number E1898
Publication Date Oct. 1, 2021
Language en - English
Page Count 5
Revision Level 21
Supercedes
Committee E01.02
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