YS/T 509.2-2008Methods for chemical analysis of spodumene and lepidolite concentrates. Determination of rubidium oxide and caesium oxide contents. Flame atomic absorption spectrometric method (English PDF)

Foreword

YS/T 509 "Methods for chemical analysis of spodumene and lepidolite

concentrates" consists of the following 11 parts:

- Part 1: Determination of lithium oxide sodium oxide and potassium oxide

contents - Flame atomic absorption spectrometric method;

- Part 2: Determination of rubidium oxide and caesium oxide contents -

Flame atomic absorption spectrometric method;

- Part 3: Determination of silicon dioxide content - Gravimetric-

molybdenum blue photometric method;

- Part 4: Determination of aluminum oxide content - EDTA complexometric

method;

- Part 5: Determination of ferric oxide content-0-phenanthroline

photometric method and EDTA complexometric method;

- Part 6: Determination of phosphorus pentoxide content-The molybdenum

blue photometric method;

- Part 7: Determination of beryllium oxide content – Chromazurol S and

cetyltrimethyl ammonium bromide spectrophotometric met;

- Part 8: Determination of calcium oxide and magnesium oxide content -

Flame atomic absorption spectrometric method;

- Part 9: Determination of fluorine content - lon selective electrode method;

- Part 10: Determination of manganous oxide content-Persulfate oxidation

photometric method;

- Part 11: Determination of loss on ignition - Gravimetric method.

This Part is Part 2.

This Part replaces YS/T 509.2-2006 "Methods for chemical analysis of

spodumenite and lepidolite concentrates The atomic absorption

spectrophotometric method for determination of rubidium oxide and caesium

oxide contents" (previous edition is GB/T 3885.2-1983).

Compared with YS/T 509.2-2006, the main changes in this Part are as follows:

- re-edited the text format;

- added the provisions on quality assurance and control; added the

Methods for chemical analysis of spodumene and

lepidolite concentrates - Determination of rubidium

oxide and caesium oxide contents - Flame atomic

absorption spectrometric method

1 Scope

This Part specifies the determination methods for rubidium oxide and caesium

oxide contents in spodumene and lepidolite concentrates.

This Part is applicable to the determinations of rubidium oxide and caesium

oxide contents in spodumene and lepidolite concentrates. Determination range:

0.50%~3.00% for rubidium oxide; 0.10%~1.20% for caesium oxide.

2 Method summary

The test material is decomposed with hydrofluoric acid-sulfuric acid. Add a

certain amount of potassium sulfate as a deionizer. In sulfuric acid medium, at

the atomic absorption spectrometer wavelengths of 780.0nm and 852.1nm, use

air-acetylene lean-burn flame to respectively determine rubidium oxide,

caesium oxide.

3 Reagents

Unless otherwise stated, only the confirmed analytically-pure reagents and

distilled water or water of comparable purity are used in the analysis.

6 Analysis steps