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AS 2434.9-2000
[Current]Method for the analysis and testing of lower rank coal and its chars, Part 9: Determination of four acid-extractable inorganic ions in lower rank coal
Sets out a method for the determination by atomic absorption spectrometry of the concentrations of the acid-extractable ions sodium, magnesium, calcium and iron in coal.
Published: 01/11/2000
Pages: 6
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
Foreword
1 Scope
2 Referenced documents
3 Principle
4 Safety
5 Reagents
5.1 General
5.2 Ethanol
5.3 Hydrochloric acid, ϱ20 1.16 g/mL
5.4 Hydrochloric acid, 0.5% (V/V)
5.5 Lanthanum solution
5.6 Magnesium perchlorate, anhydrous (-2.0 mm +0.7 mm) (desiccant)
5.7 Stock solutions, 1000 mg/L
5.7.1 Sodium
5.7.2 Calcium
5.7.3 Magnesium
5.7.4 Iron
5.7.5 Aluminium (where applicable)
5.8 Calibration solutions
6 Apparatus
6.1 Dispensers for reagents
6.2 Hotplate
6.3 Atomic absorption spectrometer
6.4 Desiccator
6.5 Filter paper
6.6 Polyethylene bottles
6.7 Desiccator
7 Sample
8 Procedure
8.1 Blank test
8.2 Extraction of ions
8.3 Measurement
8.3.1 General
8.3.2 Samples with element concentrations outside the calibration range
9 Calculation
10 Reporting of results
11 Precision
12 Test report
Cited references in this standard
[Current]
Coal and coke — Analysis and testing, Part 16: Assessment and reporting of results
[Current]
Recommended practice for chemical analysis by atomic absorption spectrometry, Part 1: Flame atomic absorption spectrometry
AS 2243
Safety in laboratories (series)
[Current]
Methods for the analysis and testing of lower rank coal and its chars, Part 7: Lower rank coal — Determination of moisture in the analysis sample
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