GB/T 14506.8-2010Methods for chemical analysis of silicate rocks - Part 8: Determination of titanium dioxide content (English PDF)
硅酸盐岩石化学分析方法 第8部分：二氧化钛量测定
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
November 10, 2010
Implementation date
February 1, 2011
Scope
GB/T 14506.8-2010 is the English-translated version of 硅酸盐岩石化学分析方法 第8部分：二氧化钛量测定.
GB/T 14506.8-2010 is Part 8 of the Chinese method series for the chemical analysis of silicate rocks and covers the determination of their titanium dioxide content.
It gives two spectrophotometric methods: the hydrogen peroxide method, for titanium dioxide from 0.2 % to 10 %, and the diantipyrylmethane method, from 0.05 % to 5 %.
For each it fixes the principle, the reagents and their preparation and the procedure: in the hydrogen peroxide method the filtrate left after the silica has been separated is treated with phosphoric acid to mask iron, and the yellow complex formed with hydrogen peroxide is read at 400 nm.
Besides rocks it applies to soils and stream sediments, and it is meant for experienced laboratory staff. It replaces GB/T 14506.8-1993, was issued on 10 November 2010 and has applied since 1 February 2011.
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Document preview — GB/T 14506.8-2010
National Standard of the People's Republic of China
- ICS
- 73.080
- Classification
- D 53
- Replacing
- GB/T 14506.8-1993
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Hydrogen peroxide spectrophotometry
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 814,506.
This Part replaces GB/T 14506.8-1993 "Silicate rocks - Determination of titanium dioxide." Compared with the original part of this section, the main changes are as follows.
--- Increasing the normative references;
--- Increased alert, warnings;
--- The weighed sample quantity and dispensing solutions to a list representation.
This section presents the People's Republic of China Ministry of Land Resources.
1 Scope
GB/T 14506 provisions of this part of the determination of titanium dioxide content of silicate rocks.
This section applies to the determination of titanium dioxide content of silicate rocks, is also applicable to the determination of titanium dioxide content of soils and stream sediments.
Measurement range. hydrogen peroxide spectrophotometry, 0.2% to 10% of titanium dioxide. Two methane antipyrine spectrophotometry, from 0.05% to 5% The amount of titanium dioxide.
2 Normative references
The following documents contain provisions which, through reference GB/T 14506 in this section constitute provisions of this section. For dated references, All subsequent amendments (excluding corrections) or revisions do not apply to this section, however, encourage an agreement under this section Parties to study 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 Hydrogen peroxide spectrophotometry
3.1 Principle
The filtrate was isolated after silica in a 5% sulfuric acid medium with phosphoric acid masking iron, titanium and hydrogen peroxide produces too complex titanate yellow Was, on a spectrophotometer, a wavelength of 400nm measured absorbance. Calculate the amount of titanium dioxide.
Their reaction was. Ti (SO4) 2 H2O -> 2 H2 [TiO2 (SO4) 2]
3.2 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.
3.2.1 Coke potassium sulfate.
3.2.2 Sulfuric acid (11). Warning --- improper dilution risk prone.
3.2.3 Sulfuric acid (595).
3.2.4 Phosphoric acid (11).
3.2.5 Hydrogen peroxide solution (30g/L). 10mL of hydrogen peroxide (30%) with water to 100mL.
3.2.6 Titania standard solution preparation.
a) titanium dioxide standard solution (0.5000mg/mL).
Weigh 0.5000g pre-1000 °C for 1h burning spectroscopically pure titanium dioxide (TiO2), placed in a platinum crucible, add 10g Coke Potassium (3.2.1) at 650 °C high temperature furnace melting 10min ~ 15min, then cool, add 400mL beaker, sulfur Acid (3.2.3) heated leaching, after shedding frit, washed out of the crucible and heated to translucent solution was cooled and transferred to 1000mL volumetric flask, Dilute to the mark with sulfuric acid (3.2.3);
b) Titanium dioxide standard solution (100.0µg/mL).
Titania dispensing 20.0mL standard solution [3.2.6a)], placed in 100mL volumetric flask, dilute sulfuric acid (3.2.3) to the mark Degree, shake.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Similar standards
Editions of GB/T 14506.8
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 14506.8-2010 | Methods for chemical analysis of silicate rocks - Part 8: Determination of titanium dioxide content | current edition | Current |
| GB/T 14506.8-1993 | Methods for chemical analysis of silicate rocks - Part 8: Determination of titanium dioxide content | previous edition | Superseded |
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Related Standards
GB/T 14506.1-2010 — Methods for chemical analysis of silicate rocks - Part 1: Determination of hygroscopic water content
GB/T 14506.10-2010 — Methods for chemical analysis of silicate rocks - Part 10: Determination of manganese oxide content
GB/T 14506.11-2010 — Methods for chemical analysis of silicate rocks - Part 11: Determination of potassium oxide and sodium oxide content
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