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ASTM E1446-05

(Test Method)

Standard Test Method for Chemical Analysis of Refined Gold by Direct Current Plasma Emission Spectrometry

Standard Test Method for Chemical Analysis of Refined Gold by Direct Current Plasma Emission Spectrometry

SIGNIFICANCE AND USE
This test method for the analysis of fine gold is primarily intended to test such material for compliance with compositional specifications. It is assumed that all who use this test method will be trained analysts capable of performing common laboratory procedures skillfully and safely. It is expected that work will be performed in a properly equipped laboratory and operated in accordance with Guide E 882.
SCOPE
1.1 This test method covers the analysis of refined gold for the following elements having the following chemical composition limits:ElementConcentration Range, ppmCopper17 to 300Iron6 to 150Lead17 to 100Palladium7 to 350Silver17 to 500
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 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.

General Information

Status
Historical
Publication Date
30-Sep-2005
ICS
77.120.99 - Other non-ferrous metals and their alloys
Technical Committee
E01 - Analytical Chemistry for Metals, Ores, and Related Materials
Drafting Committee
E01.05 - Cu, Pb, Zn, Cd, Sn, Be, Precious Metals, their Alloys, and Related Metals
Current Stage
Ref Project

Relations

Replaces
ASTM E1446-92(1997)e1 - Standard Test Method for Chemical Analysis of Refined Gold by Direct Current Plasma Emission Spectrometry
Effective Date
01-Oct-2005
Referred By
ASTM B562-95(2021) - Standard Specification for Refined Gold
Effective Date
01-Oct-2005

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ASTM E1446-05 - Standard Test Method for Chemical Analysis of Refined Gold by Direct Current Plasma Emission SpectrometryASTM E1446-05 - Standard Test Method for Chemical Analysis of Refined Gold by Direct Current Plasma Emission Spectrometry
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ASTM E1446-05 - Standard Test Method for Chemical Analysis of Refined Gold by Direct Current Plasma Emission Spectrometry
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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:E1446 −05
StandardTest Method for
Chemical Analysis of Refined Gold by Direct Current
1
Plasma Emission Spectrometry
This standard is issued under the fixed designation E1446; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope E173 Practice for Conducting Interlaboratory Studies of
Methods for Chemical Analysis of Metals (Withdrawn
1.1 This test method covers the analysis of refined gold for
3
1998)
the following elements having the following chemical compo-
E882 Guide for Accountability and Quality Control in the
sition limits:
Chemical Analysis Laboratory
Element Concentration Range, ppm
E1097 Guide for Determination of Various Elements by
Copper 17 to 300
Iron 6 to 150 Direct Current Plasma Atomic Emission Spectrometry
Lead 17 to 100
E1601 Practice for Conducting an Interlaboratory Study to
Palladium 7 to 350
Evaluate the Performance of an Analytical Method
Silver 17 to 500
1.2 The values stated in SI units are to be regarded as
3. Terminology
standard. No other units of measurement are included in this
3.1 Definitions—For definitions of terms used in this test
standard.
method, refer to Terminology E135.
1.3 This standard does not purport to address all of the
4. Summary of Test Method
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4.1 The sample is dissolved with acids. Calibration solu-
priate safety and health practices and determine the applica-
tions are prepared from pure reagents to match the sample
bility of regulatory limitations prior to use.
matrix. Analysis is performed with the d-c argon plasma
optical emission spectrometer. Element concentrations are
2. Referenced Documents
measured by comparing emission intensities from the sample
2
with those of the calibration solutions. Copper is measured at
2.1 ASTM Standards:
327.3 nm or 324.7 nm; iron at 259.9 nm; lead at 405.7 nm;
B562 Specification for Refined Gold
E29 Practice for Using Significant Digits in Test Data to palladium at 340.4 nm; and silver at 328.0 nm or 338.3 nm.
Determine Conformance with Specifications
5. Significance and Use
E50 Practices for Apparatus, Reagents, and Safety Consid-
5.1 Thistestmethodfortheanalysisoffinegoldisprimarily
erations for Chemical Analysis of Metals, Ores, and
intended to test such material for compliance with composi-
Related Materials
tional specifications. It is assumed that all who use this test
E135 Terminology Relating to Analytical Chemistry for
methodwillbetrainedanalystscapableofperformingcommon
Metals, Ores, and Related Materials
laboratory procedures skillfully and safely. It is expected that
work will be performed in a properly equipped laboratory and
1
This test method is under the jurisdiction of ASTM Committee E01 on operated in accordance with Guide E882.
Analytical Chemistry for Metals, Ores, and Related Materials and is the direct
responsibility of Subcommittee E01.05 on Cu, Pb, Zn, Cd, Sn, Be, Precious Metals, 6. Interferences
their Alloys, and Related Metals.
6.1 Spectral line interferences and spectrochemical back-
Current edition approved Oct. 1, 2005. Published December 2005. Originally
ε1
approved in 1992. Last previous edition approved in 1997 as E1446 – 92 (1997) . ground effects are overcome by preparing a matrix-matched
DOI: 10.1520/E1446-05.
calibrationstandardseriestoapproximatethepreparedsample.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on The last approved version of this historical standard is referenced on
the ASTM website. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E1446−05
6.2 The analyte wavelengths mentioned herein have been 9.2 The ultraviolet radiation from the plasma must be
previously evaluated for spectral line interferences and found shielded at all times to prevent eye damage.
to be the optimum emission wavelengths for refined gold
9.3 Alldissolutionbyacidsmustbeperformedunderahood
sample testing.Alternative wavelengths, if shown to be free of
with proper ventilation.
interferences, may also be used.
10. Sampling
7. Apparatus
10.1 For appropriate procedures on sampling the materials
7.1 D-C Argon Plasma Optical Emission Spectrometer—
covered by this test method, refer to Specification B562.
The instrument must be equipped with a sample nebuliz
...

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1.1 This specification covers refined rhodium as sponge and powder in three grades as follows:  
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1.1 This specification covers refined ruthenium as sponge and powder in one grade as follows:  
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