GB/T 14506.28-2010Methods for chemical analysis of silicate rocks - Part 28: Determination of 16 major and minor elements content (English PDF)

Foreword

GB/T 14506 "Methods for chemical analysis of silicate rocks" 30 consists of the following components.

--- Part 1. Determination of water absorption;

--- Part 2. Determination of combined water;

--- Part 3. Determination of the amount of silica;

--- Part 4. Determination of the amount of aluminum oxide;

--- Part 5. Determination of total iron content;

--- Part 6. Determination of calcium oxide content;

--- Part 7. Determination of the amount of magnesium oxide;

--- Part 8. Determination of the amount of titanium dioxide;

--- Part 9. Determination of the amount of phosphorus pentoxide;

--- Part 10. Determination of the amount of manganese oxide;

--- Part 11. Determination of the amount of sodium hydroxide and oxide;

--- Part 12. Determination of the amount of fluorine;

--- Part 13. Determination of sulfur content;

--- Part 14. Determination of ferrous oxide;

--- Part 15. Determination of the amount of lithium;

--- Part 16. Determination of the amount of rubidium;

--- Part 17. Determination of the amount of strontium;

--- Part 18. Determination of copper content;

--- Part 19. Determination of lead content;

--- Part 20. Determination of the amount of zinc;

--- Part 21. Determination of the amount of nickel and cobalt;

--- Part 22. Determination of the amount of vanadium;

--- Part 23. Determination of chromium;

--- Part 24. Determination of cadmium content;

--- Part 25. Determination of molybdenum and tungsten;

--- Part 26. Determination of cobalt content;

--- Part 27. Determination of nickel content;

--- Part 28. Determination of the amount of 16 major and minor components;

Part --- 29. 22 the amount of rare earth element determination;

--- Part 30. Determination of the amount of 44 elements.

This section GB/T Part of 2,814,506.

This Part replaces GB/T 14506.28-1993 "Determination main Silicate rocks - X-ray fluorescence spectrometry, dimension Su amount. " Section compared with the GB/T 14506.28-1993 main change this as follows.

--- Amendments and supplements to the name of the 16 major and minor components Determination;

--- Increasing the normative references.

This section of Appendix A normative appendix.

This section presents the People's Republic of China Ministry of Land Resources.

1 Scope

GB/T 14506 provisions of this part of the primary and secondary component content determination in silicate rocks.

This section applies to silicate rocks in silica, aluminum oxide, total iron (expressed in TFe2O3), magnesium oxide, calcium oxide, Sodium, potassium oxide, titanium oxide, manganese oxide, phosphorus pentoxide, barium oxide, chromium oxide, nickel, copper, strontium and zirconium quantity and other primary and secondary measured amount of component Given, also applies to the measurement of soil and stream sediments in the amount of the above components.

Silicate rocks in the main, the measurement range of the amount of the minor component in Appendix A.

2 Normative references

The following documents contain provisions which, through reference GB/T 14506 in this section constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section.

Laboratory use specifications and test methods GB/T 6682 Analysis

GB/T 14506.1 Silicate rocks - Part 1: Determination of water adsorption

3 Principle

Sample anhydrous lithium tetraborate melted ammonium nitrate as the oxidant, plus a small amount of lithium fluoride and lithium bromide as flux and mold release agents. Sample and Mass flux ratio of 8. The fusion machine at 1150 °C ~ 1250 °C melted into glass samples. In the X-ray fluorescence spectrometer The measure, in addition to nickel, copper, strontium and zirconium with Compton scattering line as internal standard calibration matrix effect, the rest of the elements are analyzed theoretical coefficient alpha Absorption correction between elements - enhancing effect, the amount of primary and secondary component is calculated based on the fluorescence intensity.

4 Reagents

Unless otherwise stated in this section are consistent with the use of analytical reagent and GB/T 6682 analytical laboratory use in the analysis.

4.1 Anhydrous lithium tetraborate. Burning 2h at 700 °C.

4.2 lithium fluoride. bake at 105 °C 2h ~ 4h.

4.3 Ammonium nitrate. bake at 105 °C 2h ~ 4h.

4.4 Lithium bromide solution (15g/L).

5 Instruments