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GB/T 14353.19-2019: Methods for chemical analysis of copper ores, lead ores and zinc ores -- Part 19: Determination of tin content -- Hydride generation atomic fluorescence spectrometry
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Methods for chemical analysis of copper ores, lead ores and zinc ores -- Part 19: Determination of tin content -- Hydride generation atomic fluorescence spectrometry
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GB/T 14353.19-2019
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Basic data | Standard ID | GB/T 14353.19-2019 (GB/T14353.19-2019) | | Description (Translated English) | Methods for chemical analysis of copper ores, lead ores and zinc ores -- Part 19: Determination of tin content -- Hydride generation atomic fluorescence spectrometry | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D40 | | Classification of International Standard | 73.060 | | Word Count Estimation | 10,184 | | Date of Issue | 2019-10-18 | | Date of Implementation | 2020-05-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 14353.19-2019: Methods for chemical analysis of copper ores, lead ores and zinc ores -- Part 19: Determination of tin content -- Hydride generation atomic fluorescence spectrometry
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Methods for chemical analysis of copper ores, lead ores and zinc ores--Part 19. Determination of tin content--Hydride generation atomic fluorescence spectrometry
ICS 73.060
D40
National Standards of People's Republic of China
Copper ore, lead ore and zinc ore chemical analysis methods
Part 19. Determination of tin content
Hydride generation atomic fluorescence spectrometry
Part 19.Determinationoftincontent-
Published on.2019-10-17
2020-05-01 implementation
State market supervision and administration
China National Standardization Administration issued
Foreword
GB/T 14353 "Chemical Analysis Methods for Copper Ore, Lead Ore and Zinc Ore" is divided into 21 parts.
--- Part 1. Determination of copper content;
--- Part 2. Determination of lead content;
--- Part 3. Determination of zinc content;
--- Part 4. Determination of cadmium content;
---Part 5. Determination of nickel content;
---Part 6. Determination of cobalt content;
---Part 7. Determination of arsenic content;
--- Part 8. Determination of volume;
---Part 9. Determination of molybdenum content;
--- Part 10. Determination of tungsten content;
--- Part 11. Determination of silver content;
--- Part 12. Determination of sulfur content;
--- Part 13. Determination of the amount of gallium, indium, niobium, tungsten and molybdenum;
--- Part 14. Determination of enthalpy;
---Part 15. Determination of selenium content;
---Part 16. Determination of enthalpy;
--- Part 17. Determination of enthalpy;
---Part 18. Determination of copper, lead, zinc, cobalt and nickel;
---Part 19. Determination of tin content by hydride generation atomic fluorescence spectrometry;
--- Part 20. Determination of enthalpy inductively coupled plasma mass spectrometry;
--- Part 21. Determination of arsenic content by hydride generation atomic fluorescence spectrometry.
This part is the 19th part of GB/T 14353.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part is proposed by the Ministry of Natural Resources of the People's Republic of China
This part is under the jurisdiction of the National Land Resources Standardization Technical Committee (SAC/TC93).
This section drafted by. Shaanxi Institute of Geology and Mineral Resources Research Institute Co., Ltd.
The main drafters of this section. Dong Yani, Xiong Ying, Ruo Ruohui, Liu Xiaoyan, Cui Changzheng.
Copper ore, lead ore and zinc ore chemical analysis methods
Part 19. Determination of tin content
Hydride generation atomic fluorescence spectrometry
Cautions - Personnel using this section should have hands-on experience in formal laboratory work. This section does not point out all possible security
problem. It is the responsibility of the user to take appropriate safety and health measures and to ensure compliance with the conditions set by the relevant national regulations.
1 Scope
This part of GB/T 14353 specifies the determination of tin in copper ore, lead ore and zinc ore by hydride generation atomic fluorescence spectrometry.
content.
This section applies to the determination of tin content in copper ore, lead ore and zinc ore by hydride generation atomic fluorescence spectrometry.
Measuring range. 0.001% to 1.0% (mass fraction).
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 6682 Analytical laboratory water specifications and test methods
GB/T 14505 General rules and general rules for chemical analysis of rocks and ores
3 Principle
The sample is dissolved in hydrochloric acid and nitric acid, and the pH of the sample solution is adjusted to 4.5 with ammonia water. The iron hydroxide is used as a carrier to make tin and Fe(OH)3 together.
Precipitation, separation of copper, lead, zinc. The tin-containing precipitate and the acid-insoluble matter are melted by sodium oxide, extracted by hot water, and subjected to secondary separation with the interference component. in
In the acidic medium, tartaric acid-thiourea-ascorbic acid is added as a masking agent, and tin reacts with potassium borohydride to form hydrogen sulfide, which is loaded into the quartz by argon gas.
The atomizer is decomposed into atomic tin, and the high-intensity hollow cathode lamp of tin is used as an "excitation" light source to make the tin atom emit fluorescence, and the fluorescence of tin is strong.
The degree is proportional to the concentration of tin within a certain range. Determination of the fluorescence intensity of tin by atomic fluorescence spectrometry, based on atomic fluorescence intensity
Calculate the tin content in the sample.
4 reagents or materials
This section uses analytically pure reagents and secondary water in accordance with GB/T 6682, unless otherwise stated.
4.1 sodium peroxide.
4.2 Sodium hydroxide solution. ρ=250g/L.
4.3 Hydrochloric acid solution (1 1). excellent grade pure.
4.4 Nitric acid solution (1 1).
4.5 Nitric acid solution (1 4).
4.6 Sulfuric acid solution (1 1).
Warning - improper dilution is dangerous
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