Standard
AS 1038.14.2-2003
[Withdrawn]Coal and coke — Analysis and testing, Part 14.2: Higher rank coal ash and coke ash — Major and minor elements — Acid digestion/flame atomic absorption spectrometric method
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.
Published: 14/11/2003
Pages: 15
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope
2 Referenced documents
3 Definitions
4 Principle
5 Safety
6 Reagents
6.1 General
6.2 Boric acid (H3BO3)
6.3 Solutions
6.3.1 Hydrochloric acid, ρ20 1.16 g/mL to 1.19 g/mL.
6.3.2 Hydrofluoric acid, ρ20 1.20 g/mL, 40% w/V.
6.3.3 Nitric acid, ρ20 1.42 g/mL, diluted 1 + 1.
6.3.4 Acid matrix base solution
6.3.5 Caesium chloride solution
6.3.6 Boric acid solution
6.4 Standard solutions
6.4.1 Standard aluminium solution (1 mL ≡ 2.0 mg Al2O3)
6.4.2 Standard calcium solution (1 mL ≡ 1.0 mg CaO)
6.4.3 Standard iron solution ( 1 mL ≡ 2.0 mg Fe2O3)
6.4.4 Standard magnesium solution (1 mL ≡ 1.0 mg MgO)
6.4.5 Standard manganese solution (1 mL ≡ 1.0 mg Mn3O4)
6.4.6 Standard potassium solution (1 mL ≡ 1.0 mg K2O)
6.4.7 Standard silicon solutions
6.4.8 Standard sodium solution (1 mL ≡ 1.0 mg Na2O)
6.4.9 Standard titanium solution (1 mL ≡ 1.0 mg TiO2)
6.5 Diluted standard solutions
6.5.1 Dilute standard manganese solution
6.5.2 Iron/titanium composite solution (1 mL ≡ 500 μg Fe2O3 and 500 μg TiO2)
6.5.3 Calcium/magnesium/sodium/potassium composite solution (1 mL ≡ 100 μg CaO, 100 μg MgO, 100 μg Na2O and 100 μg K2O)
6.6 Calibration solutions
7 Apparatus
7.1 General
7.2 Atomic absorption spectrometer
7.3 Polytetrafluoroethylene (PTFE) decomposition vessel
7.4 Polypropylene digestion bottles
7.5 Plastic bottles
7.6 Oven
7.7 Sand bath
7.8 Boiling-water bath or ultrasonic bath
7.9 Weighing device
8 Sample preparation
9 Determination of aluminium, calcium, iron, magnesium, manganese, potassium, silicon, sodium and titanium
9.1 Number of determinations
9.2 Blank test
9.3 Check test
9.4 Determination
9.4.1 Decomposition of the test portion using PTFE bomb
9.4.2 Decomposition of test portion using polypropylene bottles
9.4.3 Test solutions
9.5 Measurement
9.5.1 General
9.5.2 Calibration graphs
9.5.3 Graph linearity
9.5.4 Background correction
10 Calculation
11 Reporting of results
12 Precision
13 Test report
Appendix A
Cited references in this standard
AS 2243
Safety in laboratories (series)
[Current]
Recommended practice for chemical analysis by atomic absorption spectrometry, Part 1: Flame atomic absorption spectrometry
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