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ASTM E1600-02

(Test Method)

Standard Test Method for Determination of Gold in Cyanide Solutions by Atomic Absorption Spectrometry

Standard Test Method for Determination of Gold in Cyanide Solutions by Atomic Absorption Spectrometry

SCOPE
1.1 This test method covers the determination of gold in ore processing cyanide solution in the range from 0.3 to 10.0 μg/mL of gold by direct aspiration into an atomic absorption spectrophotometer.
1.1.1 This test method may also be applied to cyanide leach solutions from metallurgical evaluation procedures.
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 precautions are given in 8.3, 8.5, Section 9, and 10.4.1.1.

General Information

Status
Historical
Publication Date
09-May-2002
ICS
73.060.99 - Other metalliferous minerals
Technical Committee
E01 - Analytical Chemistry for Metals, Ores, and Related Materials
Drafting Committee
E01.02 - Ores, Concentrates, and Related Metallurgical Materials
Current Stage
Ref Project

Relations

Replaces
ASTM E1600-96 - Standard Test Method for Determination of Gold in Cyanide Solutions by Atomic Absorption Spectrometry
Effective Date
10-May-2002
Replaced By
ASTM E1600-07 - Standard Test Method for Determination of Gold in Cyanide Solutions by Atomic Absorption Spectrometry
Effective Date
01-Jun-2007

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ASTM E1600-02 - Standard Test Method for Determination of Gold in Cyanide Solutions by Atomic Absorption SpectrometryASTM E1600-02 - Standard Test Method for Determination of Gold in Cyanide Solutions by Atomic Absorption Spectrometry
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ASTM E1600-02 - Standard Test Method for Determination of Gold in Cyanide Solutions by Atomic Absorption Spectrometry
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:E1600–02
Standard Test Method for
Determination of Gold in Cyanide Solutions by Atomic
1
Absorption Spectrometry
This standard is issued under the fixed designation E 1600; 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.
6
1. Scope Chemical Analysis Laboratory
E 1024 Guide for Chemical Analysis of Metals and Metal
1.1 This test method covers the determination of gold in ore
Bearing Ores by Flame Atomic Absorption Spectropho-
processing cyanide solution in the range from 0.3 to 10.0
6
tometry
µg/mL of gold by direct aspiration into an atomic absorption
E 1060 Practice for Interlaboratory Testing of Spectro-
spectrophotometer.
5
chemical Methods of Analysis
1.1.1 This test method may also be applied to cyanide leach
E 1601 Practice for Conducting an Interlaboratory Study to
solutions from metallurgical evaluation procedures.
6
Evaluate the Performance of an Analytical Method
1.2 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3. Terminology
responsibility of the user of this standard to establish appro-
3.1 Definitions—For definitions of terms used in this test
priate safety and health practices and determine the applica-
method, refer to Terminology E 135.
bility of regulatory limitations prior to use. Specific precau-
tions are given in 8.3, 8.5, Section 9, and 10.4.1.1.
4. Summary of Test Method
2. Referenced Documents 4.1 The sample solution is collected and preserved with
sodium hydroxide, if necessary, by careful adjustment of pH.
2.1 ASTM Standards:
2
The test solution is filtered and gold content is determined by
D 1193 Specification for Reagent Water
2 flame atomic absorption spectrophotometry.
D 1293 Test Methods for pH of Water
E 29 Practice for Using Significant Digits in Test Data to
5. Significance and Use
3
Determine Conformance with Specifications
5.1 Inprimarymetallurgicalprocessesforgoldbearingores,
E 50 Practices for Apparatus, Reagents and Safety Precau-
gold is extracted with an alkaline cyanide solution. Metallur-
4
tions for Chemical Analysis of Metals
gical accounting, process control, and ore evaluation proce-
E 135 Terminology Relating to Analytical Chemistry for
dures depend on accurate, precise, and prompt measurements
4
Metals, Ores and Related Materials
of the gold concentrations.
E 173 Practice for Conducting Interlaboratory Studies of
5.2 This test method is a referee method for compliance
5
Methods for Chemical Analysis of Metals
6 with compositional specifications for metal content. It is
E 663 Practice for Flame Atomic Absorption Analysis
assumedthatallwhousethisprocedurewillbetrainedanalysts
E 882 Guide for Accountability and Quality Control in the
capable of performing common laboratory procedures skill-
fully and safely. It is expected that work will be performed in
a properly equipped laboratory and that proper waste disposal
1
This test method is under the jurisdiction of ASTM Committee E01 on
procedures will be followed. Follow appropriate quality con-
Analytical Chemistry for Metal, Ores, and Related Materials and is the direct
responsibility of Subcommittee E01.02 on Ores, Concentrates, and Related Metal-
trol practices such as those described in Guide E 882.
lurgical Materials.
Current edition approved May 10, 2002. Published June 2002. Originally
6. Interferences
published as E 1600 – 94. Last previous edition E 1600 – 96.
2
6.1 Elements normally found in ore processing cyanide
Annual Book of ASTM Standards, Vol 11.01.
3
Annual Book of ASTM Standards, Vol 14.02.
solutions do not interfere. Use of instrumental background
4
Annual Book of ASTM Standards, Vol 03.05.
correction is required to compensate for nonspecific absorption
5
Discontinued 1998; Available from Global Engineering, 15 Inverness Way
interferences in the flame.
East, Englewood, CO 80112.
6
Annual Book of ASTM Standards, Vol 03.06.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
E1600–02
7. Apparatus disposed of with care, avoiding contact with acid that releases
hydrogen cyanide gas. Oxidation of cyanide with chlorine or
7.1 Atomic Absorption Spectrophotometer, equipped with
hypochloritemustbecarriedoutathighpH(greaterthan11)to
background correction and capable of measuring gold at the
prevent generation of toxic cyanogen chloride gas.
242.8-nm wavelength using an air and acetylene flame over a
linear range from 0.3 to 10.0 µg/mL gold.
10. Procedure
8. Reagents and Materials
10.1 Collect, store, and dis
...

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4.1 In primary metallurgical processes for gold bearing ores, gold is extracted with an alkaline cyanide solution. Metallurgical accounting, process control, and ore evaluation procedures depend on accurate, precise, and prompt measurements of the gold levels.  
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