1 Scope
This Standard specifies the method summary, reagents and materials, apparatus, test procedures, result calculation and method precision, etc., of determining the total chlorine content in coal by high temperature combustion hydrolysis - potentiometric titration method and Eschka Mixture dissolution - potassium hydrogen sulfate titrimetric method.
This Standard applies to the brown coal, bituminous coal and anthracite.
2 Normative References
The following document is indispensable for application of this document. For the dated reference, only the dated edition applies. For the undated reference, the latest edition (including any amendments) applies to this document.
GB/T 483 General Rules for Analytical and Testing Methods of Coal
3 Method A: High Temperature Combustion Hydrolysis - Potentiometric Titration Method
Foreword I
1 Scope
2 Normative References
3 Method A: High Temperature Combustion Hydrolysis - Potentiometric Titration Method
3.1 Method Summary
3.2 Reagent and Materials
3.3 Apparatus and Equipment
3.4 Combustion Hydrolysis Coal Sample
3.5 Potentiometric Titration
3.6 Result Calculation
3.7 Method Precision
4 Method B: Eschka Mixture Dissolution - Potassium Hydrogen Sulfate Titrimetric Method
4.1 Method Summary
4.2 Reagents and Materials
4.3 Apparatus and Equipment
4.4 Determination Procedures
4.5 Result Calculation
4.6 Method Precision
5 Test Report
Appendix A (Normative) Plotting of Titration Differential Curve
