GB/T 6730.69-2010Iron ores - Determination of fluoride and chloride content - Ion chromatography (English PDF)

1 Scope

GB/T 6730 This section provides the ion chromatography method for iron ore of fluorine and chlorine content.

This section applies to natural iron ore, iron ore measuring, sinter and pellets of fluorine and chlorine content. Measurement range (mass fraction).

Fluorine is 0.005 to 4.00%, 0.005% chlorine 0.5%.

Note. This section refers to the determination of chlorine acid leaching chlorine.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein

Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 6379.2 measurement methods and results - Accuracy (trueness and precision) - Part 2. Determine the standard measurement method to repeat

Of the basic methods of reproduction

Laboratory use specifications and test methods GB/T 6682 Analysis

GB/T 6730.1 Method for analysis of chemical analysis of iron pre-dried sample preparation

GB/T 10322.1 iron ore sampling and sample preparation methods

GB/T 12806 Laboratory glassware Single Groove flask

GB/T 12808 Laboratory glassware Single Groove pipette

Principle 3

The sample was sulfuric acid decomposition, wherein the fluorine, chlorine separation with water vapor to escape the sample by absorbing liquid absorption was determined by ion chromatography. To ensure

Retention time qualitative and quantitative standard curve method.

4 Reagents and materials

Unless otherwise specified, the reagents were of analytical grade, test water line with two water GB/T 6682 regulations, resistance was

18.2Mohm · cm.