ASTM D8247-19

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D8247 − 19
Standard Test Method for
Determination of Total Fluorine and Total Chlorine in Coal
by Oxidative Pyrohydrolytic Combustion Followed by Ion
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Chromatography Detection
This standard is issued under the fixed designation D8247; 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 D2013 Practice for Preparing Coal Samples for Analysis
D3173 Test Method for Moisture in the Analysis Sample of
1.1 This test method covers the determination of total
Coal and Coke
fluorine and total chlorine in coal. Samples containing
D3180 Practice for Calculating Coal and Coke Analyses
200 mg⁄kg to 4000 mg⁄kg of chlorine and 20 mg⁄kg to
from As-Determined to Different Bases
100 mg⁄kg of fluorine can be analyzed directly.
D7582 Test Methods for Proximate Analysis of Coal and
1.1.1 It is possible for this method to be used for the
Coke by Macro Thermogravimetric Analysis
determination of total bromine in coal. No precision and bias
E29 Practice for Using Significant Digits in Test Data to
statement will be given for the determination of total bromine.
Determine Conformance with Specifications
1.2 The values stated in SI units are to be regarded as
E691 Practice for Conducting an Interlaboratory Study to
standard. The values given in parentheses after SI units are
Determine the Precision of a Test Method
provided for information only and are not considered standard.
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2.2 ISO Standard:
1.3 In determining the conformation of the test results using
ISO 5725-6:1994 Accuracy (Trueness and Precision) of
this method to applicable specifications, results shall be
Measurement Methods and Results – Part 6: Use in
rounded off in accordance with the rounding-off method from
Practice of Accuracy Values
Practice E29.
3. Terminology
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 3.1 Definitions—Definitions applicable to this test method
responsibility of the user of this standard to establish appro-
are listed in Terminology D121.
priate safety, health, and environmental practices and deter-
3.2 Abbreviations:
mine the applicability of regulatory limitations prior to use.
3.2.1 IC—ion chromatograph
1.5 This international standard was developed in accor-
3.2.2 CIC—combustion ion chromatography
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
4. Summary of Test Method
Development of International Standards, Guides and Recom-
4.1 A 50 mg to 100 mg sample is weighed into a sample
mendations issued by the World Trade Organization Technical
boat and is introduced at a controlled rate into a high
Barriers to Trade (TBT) Committee.
temperaturecombustiontubewherethesampleiscombustedin
2. Referenced Documents a humidified oxygen pyrohydrolytic environment.The gaseous
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by-products of the combusted sample are trapped in an
2.1 ASTM Standards:
absorption solution where the hydrogen halides (HX) formed
D121 Terminology of Coal and Coke
-
during combustion disassociate into their respective ions (X ).
D1193 Specification for Reagent Water
An aliquot of known volume of the absorbing solution is then
injected into an ion chromatograph (IC). The halide anions are
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separated by the anion separation column of the IC. The
This test method is under the jurisdiction of ASTM Committee D05 on Coal
and Coke and is the direct responsibility of Subcommittee D05.29 on Major
conductivity of the eluent is reduced with an anion suppression
Elements in Ash and Trace Elements of Coal.
device prior to detection of the chloride and fluoride ions with
Current edition approved Feb. 1, 2019. Published April 2019. DOI: 10.1520/
D8247-19.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
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contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from International Organization for Standardization (ISO), ISO
Standards volume information, refer to the standard’s Document Summary page on Central Secretariat, BIBC II, Chemin de Blandonnet 8, CP 401, 1214 Vernier,
the ASTM website. Geneva, Switzerland, http://www.iso.org.
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D8247 − 19
a conductivity detector. Quantification of the fluoride and manufacturer’s instructions regarding the set-up of pre-
ch
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