AS 1038.14.2-1995

1 - AS 1038.14.2-1995 COAL AND COKE - ANALYSIS AND TESTING - HIGHER RANK COAL ASH AND COKE ASH - MAJOR AND MINOR ELEMENTS - ACID
4 - PREFACE
5 - CONTENTS
6 - 1 SCOPE
7 - 2 REFERENCED DOCUMENTS
7 - 3 DEFINITIONS
7 - 3.1 Ash
7 - 3.2 Coke
7 - 3.3 Higher rank coal
7 - 4 PRINCIPLE
7 - 5 SAFETY
7 - 6 REAGENTS
7 - 6.1 General
8 - 6.2 Boric acid
8 - 6.3 Solutions
8 - 6.4 Standard solutions
9 - 6.5 Diluted standard solutions
9 - 6.6 Calibration solutions
10 - 7 APPARATUS
10 - 7.1 General
10 - 7.2 Atomic absorption spectrometer
10 - 7.3 Polytetrafluoroethylene (PTFE) decomposition vessel
10 - 7.4 Polypropylene digestion bottles
10 - 7.5 Plastic bottles
10 - 7.6 Oven
10 - 7.7 Sand bath
11 - 7.8 Boiling-water bath or ultrasonic bath
11 - 7.9 Weighing device
11 - 8 SAMPLE PREPARATION
12 - 9 DETERMINATION OF ALUMINIUM, CALCIUM, IRON, MAGNESIUM, MANGANESE, POTASSIUM, SILICON, SODIUM AND TITANIUM
12 - 9.1 Number of determinations
12 - 9.2 Blank test
12 - 9.3 Check test
12 - 9.4 Determination
14 - 9.5 Measurement
14 - 10 CALCULATION
14 - 11 REPORTING OF RESULTS
15 - 12 PRECISION
15 - 13 TEST REPORT
16 - APPENDIX A - PRECISION DATA FOR ELEMENTAL ANALYSIS OF COAL ASH AND COKE ASH

Sets out methods for the determination of silicon, aluminium, iron, calcium, magnesium, sodium, potassium, titanium and manganese in higher rank coal ash and coke ash by flame atomic absorption spectrometry after acid digestion. A spectrophotometric method for the determination of phosphorus, and methods for the determination of sulfur, are also referenced.

This Standard sets out methods for the determination of silicon, aluminium, iron, calcium, magnesium, sodium, potassium, titanium and manganese in higher rank coal ash and coke ash by flame atomic absorption spectrometry after acid digestion.NOTE: Although a volumetric approach has been specified for solution preparation, a gravimetric alternative may be used.A spectrophotometric method for the determination of phosphorus and a method for the determination of sulfur are also referenced.This method is applicable to the determination of the elements listed in Clause 1 (expressed as oxides), in the concentration ranges specified in Table 1.Table 1 has been devised to accommodate any type of ash that is likely to arise from Australian higher rank coals or cokes.NOTE: The results in Appendix A have been obtained from test work carried out on the available samples. Although testing was not carried out with a comprehensive range of likely coal compositions, the method is expected to apply over the wider ranges covered by the calibration standards and indicated in Table 1.

First published as AS 1038.14.2-1985.
Second edition 1995.