GB/T 4633-2014 in English

《GB/T 4633-2014煤中氟的测定方法》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-氟离子选择电极(简称氟电极)法测定煤中氟含量的方法提要、试剂和材料、仪器设备、测定步骤、结果计算、方法精密度和试验报告等。
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 and equipment, determination procedures, result calculation and method precision, and test report etc., of determining fluorine content in coal by high temperature combustion hydrolysis-fluorion selective electrode (hereinafter referred to as fluorine electrode) method.
This Standard applies to brown coal, bituminous coal and anthracite.

2 Normative References

The following referenced documents are indispensable for application of this document. For dated references, only the dated edition applies. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 483 General Rules for Analytical and Testing Methods of Coal
GB/T 6682 Water for Analytical Laboratory Use - Specification and Test Methods

3 Method Summary

Foreword I
1 Scope
2 Normative References
3 Method Summary
4 Reagents and Materials
5 Apparatus
6 High Temperature Combustion Hydrolysis of Coal Sample
7 Potential Measurement
8 Result Expression
9 Precision of Method
10 Test Report