ASTM E1898-97
Historical Standard: ASTM E1898-97 Standard Test Method for Determination of Silver in Copper Concentrates by Flame Atomic Absorption Spectrometry
SUPERSEDED (see Active link, below)
ASTM E1898
1. 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:
| Element | Unit | Concentration 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 | g/g | 1.40 | to | 100.0 |
| Iron | % | 12.0 | to | 30.0 |
| Lead | % | 0.01 | to | 1.40 |
| Magnesium | % | 0.02 | to | 2.00 |
| Manganese | % | 0.009 | to | 0.10 |
| Mercury | g/g | 0.05 | to | 50.0 |
| Molybdenum | % | 0.002 | to | 0.25 |
| Nickel | % | 0.0001 | to | 0.08 |
| Silicon | % | 0.40 | to | 20.0 |
| Silver | g/g | 18.0 | to | 8000 |
| Sulfur | % | 10.0 | to | 36.0 |
| Tin | % | 0.004 | to | 0.012 |
| Zinc | % | 0.005 | to | 4.30 |
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>
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
D1193 Specification for Reagent Water
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E50 Practices for Apparatus, Reagents, and Safety Considerations for Chemical Analysis of Metals, Ores, and Related Materials
E135 Terminology Relating to Analytical Chemistry for Metals, Ores, and Related Materials
E633 Guide for Use of Thermocouples in Creep and Stress-Rupture Testing to 1800F (1000C) in Air
E882 Guide for Accountability and Quality Control in the Chemical Analysis Laboratory
E1024 Guide for Chemical Analysis of Metals and Metal Bearing Ores by Flame Atomic Absorption Spectrophotometry
E1601 Practice for Conducting an Interlaboratory Study to Evaluate the Performance of an Analytical Method
E1763 Guide for Interpretation and Use of Results from Interlaboratory Testing of Chemical Analysis Methods
Keywords
copper concentrates; flame atomic absorption spectrometry; silver content;
ICS Code
ICS Number Code 71.040.50 (Physicochemical methods of analysis)
DOI: 10.1520/E1898-97
ASTM International is a member of CrossRef.
