AS 1038.8.2-1996

1 -  AS 1038.8.2-1996 COAL AND COKE - ANALYSIS AND TESTING - COAL AND COKE -CHLORINE - HIGH-TEMPERATURE COMBUSTION METHOD
4 -  PREFACE
5 -  CONTENTS
6 -  1 SCOPE
6 -  2 REFERENCED DOCUMENTS
6 -  3 PRINCIPLE
6 -  4 DEFINITIONS
6 -  5 SAFETY
7 -  6 REAGENTS
7 -  6.1 General
7 -  6.2 Aluminium oxide
7 -  6.3 Desiccant
7 -  6.4 Sodium tetraborate solution (0.025 mol/ L)
7 -  6.5 Standard sulfuric acid solution (0.0125 mol/ L)
7 -  6.6 Hydrogen peroxide solution (9 g/ L)
7 -  6.7 Mercury (II) oxycyanide solution
7 -  6.8 Screened indicator solution
7 -  6.9 Oxygen
7 -  7 APPARATUS
7 -  7.1 Purification train
7 -  7.2 Heating unit
7 -  7.3 Combustion tube
7 -  7.4 Combustion boat
8 -  7.5 Silica pusher
8 -  7.6 Nickel-chromium wire
8 -  7.7 Flowmeter
8 -  7.8 Pressure gauge
8 -  7.9 Silica adaptor
8 -  7.10 Absorption vessel
8 -  7.11 Heat-resistant stopper
8 -  7.12 Pressure regulator
8 -  7.13 Vacuum pump
9 -  8 SAMPLE
9 -  8.1 General
9 -  8.2 Equilibration
9 -  9 PROCEDURE
9 -  9.1 Preparation of apparatus
9 -  9.2 Determination of the blank
9 -  9.3 Combustion and absorption
10 -  9.4 Measurement
10 -  10 CALCULATION
11 -  11 REPORTING OF RESULT
11 -  12 PRECISION
11 -  13 TEST REPORT

Sets out a high-temperature combustion titrimetric procedure for the determination of the chlorine content of coal and coke.

This Standard sets out a method for the liberation of the chlorine from coal and coke by high-temperature combustion, and its subsequent determination by titrimetry.

NOTE: The presence of residual halogen-bearing organic float-and-sink liquids in coal samples will affect the determination of chlorine.

This Standard is applicable to coal and coke containing less than 0.3% chlorine.

Under Revision see DR 03090 CP First published as part of AS K152.8-1965 (endorsement of BS 1016.8-1959 without amendment).
AS K152.8-1965 withdrawn 1978.
AS K152.8-1965 revised and redesignated AS 1038.8-1980.
Revised and redesignated in part as AS 1038.8.2-1996.