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Normas ASTM – AENOR
ASTM E1898-97

ASTM E1898-97

Standard Test Method for Determination of Silver in Copper Concentrates by Flame Atomic Absorption Spectrometry

Fecha:
2017-08-16 /Historical
Superseeded by:
Scope:

1.1 This test method covers the determination of silver in the range of 50 g/g to 1000 g/g by acid dissolution of the silver and measurement by atomic absorption spectrophotometry. Copper concentrates are internationally traded within the following concentration ranges:

ElementUnit Concentration Range
Aluminum%0.05to 2.50
Antimony%0.0001to 4.50
Arsenic%0.01to 0.50
Barium%0.003to 0.10
Bismuth%0.001to 0.16
Cadmium%0.0005to 0.04
Calcium%0.05to 4.00
Carbon %0.10to 0.90
Chlorine%0.001to 0.006
Chromium%0.0001to 0.10
Cobalt%0.0005to 0.20
Copper%10.0to 44.0
Fluorine%0.001to 0.10
Gold g/g1.40to100.0
Iron %12.0to30.0
Lead %0.01to1.40
Magnesium%0.02to 2.00
Manganese%0.009to 0.10
Mercuryg/g0.05to 50.0
Molybdenum% 0.002to 0.25
Nickel%0.0001to 0.08
Silicon%0.40to 20.0
Silverg/g18.0to 8000
Sulfur%10.0to 36.0
Tin %0.004to0.012
Zinc %0.005to4.30

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 its use./p>

Keywords:
copper concentrates; silver content
50,42
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