ASTM E2293-03(2013)
(Practice)Standard Practice for Drying of Metal Bearing Ores, Concentrates, and Related Metallurgical Materials for the Determination of Mercury
Standard Practice for Drying of Metal Bearing Ores, Concentrates, and Related Metallurgical Materials for the Determination of Mercury
SIGNIFICANCE AND USE
5.1 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 E877, ISO 9599, ISO 12743, and ISO 10251).
5.2 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 E882.
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.
General Information
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Standards Content (Sample)
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Designation: E2293 − 03 (Reapproved 2013)
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.
1. Scope ISO 12743 Copper, Lead, and Zinc Sulfide Concentrates
–Sampling Procedures for the Determination of Metal and
1.1 This practice covers the sample drying step for the
Moisture Content
determination of mercury in ores, concentrates, and related
ISO 10251 Copper, Lead, and Zinc Sulfide Concentrates
metallurgical materials.
–Determination of Mass Loss of Bulk Material on Drying
1.2 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this
3. Terminology
standard.
3.1 Definitions—For definitions of terms used in this
1.3 This standard does not purport to address all of the
Practice, refer to Terminology E135.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4. Summary of Practice
priate safety and health practices and determine the applica-
4.1 Test samples for be used for mercury determination are
bility of regulatory limitations prior to use.
dried at 60 °C.
2. Referenced Documents
5. Significance and Use
2.1 ASTM Standards:
5.1 This practice is primarily to be used to dry samples for
E50 Practices for Apparatus, Reagents, and Safety Consid-
the determination of mercury test portions, and it should not be
erations for Chemical Analysis of Metals, Ores, and
used for the determination of sample moisture content. Most
Related Materials
sample preparation methods prescribe drying the samples at
E135 Terminology Relating to Analytical Chemistry for
105 °C, until a constant mass is obtained.The moisture content
Metals, Ores, and Related Materials
is determined as the percentage mass loss on drying. However,
E877 Practice for Sampling and Sample Preparation of Iron
since mercury can volatize from samples at the normally
Ores and Related Materials for Determination of Chemi-
utilized temperature, samples that are to be used for mercury
cal Composition and Physical Properties
determination shall be dried at 60 °C (see Practice E877,
E882 Guide for Accountability and Quality Control in the
ISO 9599, ISO 12743, and ISO 10251).
Chemical Analysis Laboratory
5.2 It is assumed that all who use this practice will be
2.2 Other Documents:
trained analysts capable of performing skillfully and safely. It
ISO 9599 Copper, Lead, and Zinc Sulfide Concentrates–De-
is expected that work will be performed in a properly equipped
termination of Hygroscopic Moisture in the Analysis
laboratory under appropriate quality control practices such as
Sample-Gravimetric Method
those described in Guide E882.
6. Apparatus
This practice is under the jurisdiction of ASTM Committee E01 on Analytical
6.1 Drying Oven, ventilated with forced circulation of air,
Chemistry for Metals, Ores, and Related Materials and is the direct responsibility of
Subcommittee E01.02 on Ores, Concentrates, and Related Metallurgical Materials. regulated at a temperature of 60 °C 6 2 °C.
Current edition approved Nov. 1, 2013. Published December 2013. Originally
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