AS 1038.10.4-1989

1 - AS 1038.10.4-1989 METHODS FOR THE ANALYSIS AND TESTING OF COAL AND COKE - DETERMINATION OF TRACE ELEMENTS - COAL, COKE AND FL
4 - PREFACE
4 - CONTENTS
5 - FOREWORD
6 - 1 SCOPE.
6 - 2 REFERENCED DOCUMENTS.
6 - 3 PRINCIPLE.
6 - 4 SAFETY.
6 - 5 REAGENTS.
6 - 5.1 General.
6 - 5.2 Silica
6 - 5.3 Phosphoric acid
6 - 5.4 Solutions for ISE measurement.
6 - 5.5 Absorption solution for IC measurement.
6 - 5.6 Oxygen.
7 - 6 APPARATUS.
7 - 6.1 Phials
7 - 6.2 Polypropylene bottles (or polystyrene phials)
7 - 6.3 Polystyrene phials
7 - 6.4 Balances
7 - 6.5 Polyethylene dispensing bottles
7 - 6.6 Micropipette
7 - 6.7 Glass dropper bottle
7 - 6.8 Apparatus for tube-furnace pyrohydrolysis.
7 - 6.9 Apparatus for induction-furnace pyrohydrolysis.
9 - 6.10 ISE measurement apparatus.
9 - 6.11 IC measurement apparatus.
9 - 7 SAMPLE.
9 - 7.1 Coal and coke.
9 - 7.2 Fly-ash.
10 - 8 PROCEDURE.
10 - 8.1 Number of determinations.
10 - 8.2 Blank tests.
10 - 8.3 Test sample preparation.
10 - 8.4 Tube-furnace pyrohydrolysis.
10 - 8.5 Induction-furnace pyrohydrolysis.
11 - 8.6 Solution measurement.
12 - 9 CALCULATIONS.
12 - 9.1 General.
12 - 9.2 Direct-comparison ISE method following tube-furnace pyrohydrolysis.
12 - 9.3 IC method.
12 - 9.4 Analyte-addition ISE method following induction-furnace pyrohydrolysis
13 - 9.5 Analyte-addition ISE method following tube-furnace pyrohydrolysis.
13 - 10 REPORTING OF RESULT.
13 - 11 PRECISION OF THE DETERMINATION.
13 - 12 TEST REPORT.
14 - APPENDIX A - DETERMINATION OF FLUORIDE ELECTRODE SLOPE, RESPONSE TIME AND RESPONSE CURVE
14 - A1 SCOPE.
14 - A2 SLOPE AND RESPONSE TIME MEASUREMENT.
14 - A3 SLOPE CALCULATION.
15 - A4 WORKED EXAMPLE OF BLANK AND SLOPE MEASUREMENT BY DOUBLE ANALYTE ADDITION.
16 - A5 WORKED EXAMPLE OF DETERMINATION OF FLUORINE IN COAL BY INDUCTION-FURNACE PYROHYDROLYSIS FOLLOWED BY ISE MEASUREMENT BY SI

Sets out procedures for the pyrohydrolytic separation of fluorine from coal, coke and fly-ash, and for determination of fluorine by gravimetric processing and either ion potentiometry or ion chromatography.

This Standard sets out procedures for the pyrohydrolytic separation of fluorine from coal, coke and fly-ash and for determination of fluorine by gravimetric processing and either ion potentiometry or ion chromatography.

Under revision see DR 00052