ASTM D5263-93(2001)
Historical Standard: ASTM D5263-93(2001) Standard Test Method for Determining the Relative Degree of Oxidation in Bituminous Coal by Alkali Extraction
SUPERSEDED (see Active link, below)
ASTM D5263
1. Scope
1.1 This colorimetric method describes the determination of the relative degree of oxidation by alkali extraction of coals that are high volatile A bituminous to low volatile bituminous in rank.
1.2 This test cannot be sensitive to thermally oxidized coal. It is intended for coals that may be oxidized as a result of weathering.
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.
1.4 The values stated in SI units shall be regarded as standard.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
D1193 Specification for Reagent Water
D4621 Guide for Quality Management in an Organization That Samples or Tests Coal and Coke
Keywords
absorbance; alkali extraction; colorimetric; humic acids; oxidation (weathering); transmittance; Humic acids; Absorbance and transmittance; Alkali extraction; Colorimetric analysis; Extraction methods; Oxidation testing; Transmittance and reflectance; Weathering;
ICS Code
ICS Number Code 73.040 (Coals)
DOI: 10.1520/D5263-93R01
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