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GB/T 16484.8-2009: Chemical analysis methods of rare earth chloride and light rare earth carbonate -- Part 8: Determination of sodium oxide content -- Flame atomic absorption spectrometry
Status: Valid GB/T 16484.8: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 16484.8-2009 | English | 189 |
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Chemical analysis methods of rare earth chloride and light rare earth carbonate -- Part 8: Determination of sodium oxide content -- Flame atomic absorption spectrometry
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GB/T 16484.8-2009
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| GB/T 16484.8-1996 | English | 239 |
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Methods for chemical analysis of rare earth chloride and carbonate--Determination of sodium oxide content
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GB/T 16484.8-1996
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PDF similar to GB/T 16484.8-2009
Basic data | Standard ID | GB/T 16484.8-2009 (GB/T16484.8-2009) | | Description (Translated English) | Chemical analysis methods of rare earth chloride and light rare earth carbonate -- Part 8: Determination of sodium oxide content -- Flame atomic absorption spectrometry | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H14 | | Classification of International Standard | 77.120.99 | | Word Count Estimation | 8,892 | | Date of Issue | 2009-09-04 | | Date of Implementation | 2010-05-01 | | Older Standard (superseded by this standard) | GB/T 16484.8-1996 | | Regulation (derived from) | National Standard Approval Announcement 2009 No.12 (Total No.152) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the rare earth chloride, determination of the light rare earth carbonate, sodium oxide content. This section applies to rare earth chloride, determination of the light rare earth carbonate, sodium oxide content. Measurement range of 0. 05% to 2. 00 %. | GB/T 16484.8-2009: Chemical analysis methods of rare earth chloride and light rare earth carbonate -- Part 8: Determination of sodium oxide content -- Flame atomic absorption spectrometry
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Chemical analysis methods of rare earth chloride and light rare earth carbonate Part 8. Determination of sodium oxide content Flame atomic absorption spectrometry
ICS 77.120.99
H14
National Standards of People's Republic of China
Replacing GB/T 16484.8-1996
Earth chloride and light rare earth carbonate chemical analysis methods
Part 8. Determination of the amount of sodium oxide
Flame Atomic Absorption Spectrometry
Posted 2009-10-30 2010-05-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 16484-2009 "rare earth chloride and light rare earth carbonate chemical analysis method" is divided into 22 parts.
--- Part 1. Determination of cerium oxide content of ammonium ferrous sulfate titration;
--- Part 2. europium oxide content - Inductively Coupled Plasma Mass Spectrometry;
--- Part 3. 15 with a rare earth element oxide component measured by inductively coupled plasma atomic emission spectrometry;
--- Part 4. Determination of thorium oxide content arsenazo Ⅲ spectrophotometry;
--- Part 5. Determination of barium oxide by inductively coupled plasma atomic emission spectrometry;
--- Part 6. Determination of calcium oxide content by flame atomic absorption spectrometry;
--- Part 7. Determination of magnesium oxide content - Flame atomic absorption spectrometry;
--- Part 8. Determination of the amount of sodium oxide flame atomic absorption spectrometry;
--- Part 9. Determination of the amount of nickel oxide by flame atomic absorption spectrometry;
--- Part 10. Determination of manganese oxide content by flame atomic absorption spectrometry;
--- Part 11. Determination of lead oxide content by flame atomic absorption spectrometry;
--- Part 12. Determination of the amount of sulfate;
--- Part 13. Determination of the amount of ammonium chloride distillation - titration;
--- Part 14. Determination of the amount of phosphate phosphorus antimony molybdenum blue spectrophotometric method;
--- Part 15. light rare earth carbonate - Determination of the amount of chlorine in the silver nitrate turbidimetry;
--- Part 16. rare earth chloride in an amount of water insolubles - Gravimetric method;
--- Part 17. Determination of moisture content in rare earth carbonate;
--- Part 18. Determination of light rare earth carbonate in the weight loss on ignition method;
--- Part 20. nickel oxide, manganese oxide, lead oxide, aluminum oxide, zinc oxide, thorium oxide content - Inductively coupled plasma mass
Spectroscopy;
--- Part 21. Determination of iron oxide content of 1,10 phenanthroline spectrophotometry;
--- Part 22. Determination of the amount of zinc oxide flame atomic absorption spectrometry;
--- Part 23. Determination of carbonic acid insoluble light amount of rare earth gravimetric method.
This section GB/T Part of 816,484.
This Part replaces GB/T 16484.8-1996 "rare earth chloride, rare earth carbonate chemical analysis by flame atomic absorption spectrometry
Sodium oxide. "
This section compared with the GB/T 16484.8-1996, have the following main changes.
--- Increasing the precision of the terms;
--- Increased quality assurance and control provisions;
--- Standard text made editorial changes.
This part of the National Standardization Technical Committee rare and centralized.
This section is responsible for drafting unit. Beijing Nonferrous Metal Research Institute, China Nonferrous Metals Industry Institute of Standards and Metrology and Quality.
This section was drafted by the Beijing Nonferrous Metal Research Institute.
Participated in the drafting of this section. Shandong Zibo Jiahua Advanced Material Resources Co., Ltd., Baotou Steel Rare Earth Hi-Tech Company.
The main drafters of this section. red Chen Yun, Yang Ping, Liu Wenhua.
The drafters of some of the participants. love red Cao, Bao Yongping, Li Jie.
This part of the alternative criteria previously issued as follows.
--- GB/T 16484.8-1996.
Earth chloride and light rare earth carbonate chemical analysis methods
Part 8. Determination of the amount of sodium oxide
Flame Atomic Absorption Spectrometry
1 Scope
GB/T 16484 provisions of this part of the determination of rare earth chloride, sodium carbonate light rare earth oxide content.
This section applies to the determination of rare earth chloride, sodium carbonate light rare earth oxide content. Measuring range. 0.05% to 2.00%.
2 principle of the method
The sample was dissolved in nitric acid or hydrochloric acid. In acid medium, with air - acetylene flame, using the standard addition method in the atomic absorption spectrometer wave
Long 589.0nm sodium measured absorbance, the amount of sodium oxide sample calculations.
3 Reagents and materials
3.1 Hydrogen peroxide (30%).
3.2 nitric acid (1 + 1), pure class distinctions.
3.3 oxalic acid (50g/L), pure class distinctions.
3.4 Storage standard sodium hydroxide solution. Weigh 1.8858g burning after 400 ℃ ~ 450 ℃ to crackle-free sodium chloride (pure class distinctions, placed
Desiccator, cool to room temperature) in 500mL beaker, add water, 200mL dissolve. Moved into 1000mL volumetric flask, dilute to the mark with water
Degree, shake. 1mL solution containing 1mg sodium oxide.
3.5 sodium hydroxide standard solution. Pipette 20.00mL sodium hydroxide standard stock solution (3.4) in 100mL flask, diluted with water to the mark
Degree, shake. This solution 1mL containing 200μg sodium oxide.
3.6 sodium oxide standard solution. Pipette 5.00mL sodium hydroxide standard stock solution (3.4) in 100mL flask, diluted with water to the mark
Degree, shake. This solution 1mL containing 50μg sodium oxide.
3.7 sodium hydroxide standard solution. Pipette 10.00mL sodium oxide standard solution (3.6) in 100mL volumetric flask, dilute to the mark, shake
uniform. This solution 1mL containing 5μg sodium oxide.
4 Instrument
Atomic absorption spectrometer, with a sodium hollow cathode lamp.
Under optimum conditions the instrument, those who can reach the following indicators can be used.
--- Characteristic concentration. measurement of the sample solution with the matrix phase in the same solution, wherein the sodium concentration is not more than 0.0062μg/mL.
--- Precision. measuring the absorbance of the standard solution 10 times the highest concentration, the absorbance of the standard deviation does not exceed an average of 1.0%; most
Low concentrations of the standard solution (not a zero standard solution) absorbance measured 10 times, and the standard deviation should not exceed the maximum average absorption solution
0.5% luminosity.
--- Linear curve. The curve is divided into five sections according to concentration, absorbance difference between the absorbance difference between the highest and the lowest segment of the segment
Ratio of not less than 0.7.
5 Sample
5.1 Preparation of rare earth chloride sample. A sample was crushed, quickly placed in a weighing bottle immediately weighed.
5.2 Preparation of light rare earth carbonate sample. weigh the sample immediately after the opening.
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