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