1 - AS 1038.14.2-2003 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 - 4 PRINCIPLE
7 - 5 SAFETY
7 - 6 REAGENTS
7 - 6.1 General
8 - 6.2 Boric acid (H3BO3)
8 - 6.3 Solutions
8 - 6.3.1 Hydrochloric acid, rho20 1.16 g/mL to 1.19 g/mL.
8 - 6.3.2 Hydrofluoric acid, rho20 1.20 g/mL, 40% w/V.
8 - 6.3.3 Nitric acid, rho20 1.42 g/mL, diluted 1 + 1.
8 - 6.3.4 Acid matrix base solution
8 - 6.3.5 Caesium chloride solution
8 - 6.3.6 Boric acid solution
8 - 6.4 Standard solutions
8 - 6.4.1 Standard aluminium solution
8 - 6.4.2 Standard calcium solution
8 - 6.4.3 Standard iron solution
8 - 6.4.4 Standard magnesium solution
8 - 6.4.5 Standard manganese solution
9 - 6.4.6 Standard potassium solution
9 - 6.4.7 Standard silicon solutions
9 - 6.4.8 Standard sodium solution
9 - 6.4.9 Standard titanium solution
9 - 6.5 Diluted standard solutions
9 - 6.5.1 Dilute standard manganese solution
9 - 6.5.2 Iron/titanium composite solution
10 - 6.5.3 Calcium/magnesium/sodium/potassium composite solution
10 - 6.6 Calibration solutions
10 - 7 APPARATUS
10 - 7.1 General
10 - 7.2 Atomic absorption spectrometer
11 - 7.3 Polytetrafluoroethylene (PTFE) decomposition vessel
11 - 7.4 Polypropylene digestion bottles
11 - 7.5 Plastic bottles
11 - 7.6 Oven
11 - 7.7 Sand bath
11 - 7.8 Boiling-water bath or ultrasonic bath
11 - 7.9 Weighing device
12 - 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
13 - 9.4 Determination
13 - 9.4.1 Decomposition of the test portion using PTFE bomb
13 - 9.4.2 Decomposition of test portion using polypropylene bottles
14 - 9.4.3 Test solutions
14 - 9.5 Measurement
14 - 9.5.1 General
15 - 9.5.2 Calibration graphs
15 - 9.5.3 Graph linearity
15 - 9.5.4 Background correction
15 - 10 CALCULATION
15 - 11 REPORTING OF RESULTS
16 - 12 PRECISION
16 - 13 TEST REPORT
17 - APPENDIX A - PRECISION DATA FOR ELEMENTAL ANALYSIS OF COAL ASH AND COKE ASH

Sets out methods for the determination of nine elements in higher rank coal ash and coke ash by flame atomic absorption spectrometry after acid digestion. Methods for the determination of a further two elements 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 above (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.Third edition 2003.Reconfirmed 2013. Originated as AS 1038.14.2-1985. Previous edition AS 1038.14.2-1995. Third edition 2003.