GB/T 14352.13-2010Methods for chemical analysis of tungsten ores and molybdenum ores - Part 13: Determination of tin content (English PDF)
钨矿石、钼矿石化学分析方法 第13部分：锡量测定
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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 14352.13-2010 is the English-translated version of 钨矿石、钼矿石化学分析方法 第13部分：锡量测定.
GB/T 14352.13-2010 is Part 13 of GB/T 14352 and gives the methods for determining the tin content of tungsten ores and molybdenum ores. It sets out two procedures: polarography in a hydrochloric acid - ammonium chloride medium, for 0.005 % to 1.0 % tin, and hydride generation atomic fluorescence spectrometry, for 0.5 µg/g to 2000 µg/g.
For the polarographic method it describes the sodium peroxide fusion, the hot-water leach and the coprecipitation of tin with beryllium hydroxide at pH 9.0 to 9.5, which separates iron, aluminium, lead, copper and tungsten, and the measurement of the peak near -0.55 V against a saturated calomel electrode.
It lists the reagents needed and refers to GB/T 6379.2, GB/T 6682 and GB/T 14505. It replaces GB/T 14352.13-1993, was issued on 10 November 2010 and has applied since 1 February 2011.
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Document preview — GB/T 14352.13-2010
National Standard of the People's Republic of China
- ICS
- 73.060
- Classification
- D 40
- Replacing
- GB/T 14352.13-1993
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Hydrochloric acid - ammonium chloride polarography
Foreword
GB/T 14352 "tungsten ores and molybdenum ores chemical analysis methods," a total of 18 parts.
--- Part 1. Determination of tungsten;
--- Part 2. Determination of molybdenum;
--- Part 3. Determination of copper content;
--- Part 4. Determination of lead content;
--- Part 5. Determination of the amount of zinc;
--- Part 6. Determination of cadmium content;
--- Part 7. Determination of cobalt content;
--- Part 8. Determination of nickel content;
--- Part 9. Determination of sulfur content;
--- Part 10. Determination of arsenic content;
--- Part 11. Determination of the amount of bismuth;
--- Part 12. determination of silver;
--- Part 13. Determination of tin;
--- Part 14. Determination of gallium;
--- Part 15. Determination of germanium content;
--- Part 16. Determination of the amount of selenium;
--- Part 17. Determination of tellurium content;
--- Part 18. Determination of the amount of rhenium.
This part is Part 13 of GB/T 14352.
This Part replaces GB/T 14352.13-1993 "tungsten ores and molybdenum ores Hydrochloric acid - Polarographic determination of ammonium chloride The amount of tin. " Section compared with the GB/T 14352.13-1993, major changes in the following.
--- Method for the determination of tin content increases hydride generation atomic fluorescence spectrometry;
--- Increased alert, warnings;
--- Modify the sample drying temperature. Information Appendix A Appendix of this section.
This section presents the People's Republic of China Ministry of Land Resources.
1 Scope
This section GB/T 14352 provides for tungsten ores and determination of the amount of molybdenum Shizhong Xi.
This section applies to ore, molybdenum ore Shizhong Xi determining the amount of tungsten.
Measurement range. Polarographic 0.005% to 1.0% tin, atomic fluorescence spectrometry 0.5µg/g ~ 2000µg/g tin.
2 Normative references
The following documents contain provisions which, through reference GB/T 14352 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.
GB/T 6379.2 measurement methods and results accuracy - Part 2: Determination of repeatability and reproducibility of test methods based standard This method
Laboratory use specifications and test methods GB/T 6682 Analysis
GB/T 14505 method for chemical analysis of rocks and ores General rules and regulations
3 Hydrochloric acid - ammonium chloride polarography
3.1 Principle
Sample molten sodium peroxide decomposition by hot water extraction, after hydrochloric acid was added as a co-precipitating agent beryllium salt, EDTA as a masking agent, then Addition of aqueous ammonia solution pH 9.0 to 9.5, trace of tin and beryllium hydroxide coprecipitation, thereby separating the iron, aluminum, lead, copper, and tungsten. Then Hydrochloric acid - ammonium chloride solution, tin peak potential of about -0.55V (saturated calomel electrode), with oscilloscope Polarograph derivative portion measured peak High calculate the amount of tin.
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 Sodium peroxide.
3.2.2 Ammonia (rho0.90g/mL).
3.2.3 Hydrochloric acid (rho1.19g/mL).
3.2.4 Hydrochloric acid (11).
3.2.5 EDTA (disodium ethylenediamine tetraacetate) solution of [100g/L, with aqueous ammonia (3.2.2) solubilizing].
3.2.6 EDTA lotion [5g/L, with aqueous ammonia (3.2.2) is adjusted to about pH9].
3.2.7 Ammonium chloride solution (250g/L).
3.2.8 Beryllium solution
Weigh 3.5g beryllium oxide, placed in a platinum evaporating dish, with the amount of water wet, along the wall several times slowly dropped hydrofluoric acid (rho1.13g/mL) about 20mL, violent action until stopped by heating until completely dissolved, remove the coolish, add 20mL sulfuric acid (11), is heated and evaporated to white smoke,
......
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
Normative references
- GB/T 6379.2Accuracy (trueness and precision) of measurement methods and results - Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
- GB/T 6682Water for analytical laboratory use - Specification and test methods
- GB/T 14505Method for chemical analysis of rocks and ores - General rules and regulations
Similar standards
Editions of GB/T 14352.13
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 14352.13-2010 | Methods for chemical analysis of tungsten ores and molybdenum ores - Part 13: Determination of tin content | current edition | Current |
| GB/T 14352.13-1993 | Methods for chemical analysis of tungsten ores and molybdenum ores - Part 13: Determination of tin content | previous edition | Superseded |
This page sells the current edition, GB/T 14352.13-2010. Earlier editions are listed for reference only.
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Related Standards
GB/T 14505-2010 — Method for chemical analysis of rocks and ores - General rules and regulations
GB/T 6379.2-2004 — Measurement methods and results -- Accuracy (trueness and precision) -- Part 2: Determine the standard methods of measurement repeatability and reproducibility of the basic method
GB/T 6379.2-2026 — Accuracy (trueness and precision) of measurement methods and results - Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
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