GB/T 3558-2014 in English

《GB/T 3558-2014煤中氯的测定方法》由TC42（全国煤炭标准化技术委员会）归口，TC42SC1（全国煤炭标准化技术委员会煤炭检测分会）执行，主管部门为中国煤炭工业协会。
本标准规定了高温燃烧水解-电位滴定法和艾氏剂熔样-硫酸氢钾滴定法测定煤中总氯含量的方法提要、试剂和材料、仪器设备、试验步骤、结果计算及方法精密度等。
本标准适用于褐煤、烟煤和无烟煤。

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