Standard Practice for Drying of Metal Bearing Ores, Concentrates and Related Metallurgical Materials for the Determination of Mercury

SIGNIFICANCE AND USE
This practice is primarily to be used to dry samples for the determination of mercury test portions, and it should not be used for the determination of sample moisture content. Most sample preparation methods prescribe drying the samples at 105 °C, until a constant mass is obtained. The moisture content is determined as the percentage mass loss on drying. However, since mercury can volatize from samples at the normally utilized temperature, samples that are to be used for mercury determination shall be dried at 60 °C (see Practice E 877, ISO 9599, ISO 12743, and ISO 10251).
It is assumed that all who use this practice will be trained analysts capable of performing skillfully and safely. It is expected that work will be performed in a properly equipped laboratory under appropriate quality control practices such as those described in Guide E 882.
SCOPE
1.1 This practice covers the sample drying step for the determination of mercury in ores, concentrates, and related metallurgical materials.
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.

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Publication Date
31-Oct-2008
Current Stage
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ASTM E2293-03(2008)e1 - Standard Practice for Drying of Metal Bearing Ores, Concentrates and Related Metallurgical Materials for the Determination of Mercury
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
´1
Designation: E2293 − 03 (Reapproved2008)
Standard Practice for
Drying of Metal Bearing Ores, Concentrates, and Related
Metallurgical Materials for the Determination of Mercury
This standard is issued under the fixed designation E2293; 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.
´ NOTE—Editorial changes were made throughout in November 2008.
1. Scope Sample-Gravimetric Method
ISO 12743 Copper, Lead, and Zinc Sulfide Concentrates
1.1 This practice covers the sample drying step for the
–Sampling Procedures for the Determination of Metal and
determination of mercury in ores, concentrates, and related
Moisture Content
metallurgical materials.
ISO 10251 Copper, Lead, and Zinc Sulfide Concentrates
1.2 The values stated in SI units are to be regarded as
–Determination of Mass Loss of Bulk Material on Drying
standard. No other units of measurement are included in this
standard.
3. Terminology
1.3 This standard does not purport to address all of the
3.1 Definitions—For definitions of terms used in this
safety concerns, if any, associated with its use. It is the
Practice, refer to Terminology E135.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
4. Summary of Practice
bility of regulatory limitations prior to use.
4.1 Test samples for be used for mercury determination are
2. Referenced Documents
dried at 60 °C.
2.1 ASTM Standards:
5. Significance and Use
E50 Practices for Apparatus, Reagents, and Safety Consid-
erations for Chemical Analysis of Metals, Ores, and
5.1 This practice is primarily to be used to dry samples for
Related Materials
the determination of mercury test portions, and it should not be
E135 Terminology Relating to Analytical Chemistry for
used for the determination of sample moisture content. Most
Metals, Ores, and Related Materials
sample preparation methods prescribe drying the samples at
E877 Practice for Sampling and Sample Preparation of Iron
105 °C, until a constant mass is obtained.The moisture content
Ores and Related Materials for Determination of Chemi-
is determined as the percentage mass loss on drying. However,
cal Composition
since mercury can volatize from samples at the normally
E882 Guide for Accountability and Quality Control in the
utilized temperature, samples that are to be used for mercury
Chemical Analysis Laboratory
determination shall be dried at 60 °C (see Practice E877,
2.2 Other Documents:
ISO 9599, ISO 12743, and ISO 10251).
ISO 9599 Copper, Lead, and Zinc Sulfide Concentrates–De-
5.2 It is assumed that all who use this practice will be
termination of Hygroscopic Moisture in the Analysis
trained analysts capable of performing skillfully and safely. It
is expected that work will be performed in a properly equipped
This practice is under the jurisdiction of ASTM Committee E01 on Analytical
laboratory under appropriate quality control practices such as
Chemistry for Metals, Ores, and Related Materials and is the direct responsibility of
those described in Guide E882.
Subcommittee E01.02 on Ores, Concentrates, and Related Metallurgical Materials.
Current edition approved Nov. 1, 2008. Published December 2008. Originally
approved in 2003. Last previous edition approved in 2003 as E2293 – 03. DOI: 6. Apparatus
10.152
...

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