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GB/T 16484.21-2009: Chemical analysis methods of rare earth chloride and light rare earth carbonate -- Part 21: Determination of iron oxide content. 1, 10-phenanthroline spectrophotometry
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Chemical analysis methods of rare earth chloride and light rare earth carbonate -- Part 21: Determination of iron oxide content. 1, 10-phenanthroline spectrophotometry
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GB/T 16484.21-2009
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Basic data | Standard ID | GB/T 16484.21-2009 (GB/T16484.21-2009) | | Description (Translated English) | Chemical analysis methods of rare earth chloride and light rare earth carbonate -- Part 21: Determination of iron oxide content. 1, 10-phenanthroline spectrophotometry | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H14 | | Classification of International Standard | 77.120.99 | | Word Count Estimation | 7,787 | | Date of Issue | 2009-09-04 | | Date of Implementation | 2010-05-01 | | 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, carbonate method for measuring light amount of rare earth oxide. This section applies to rare earth chloride, determination of light rare earth carbonate, iron oxide content. Measurement range 0. 0030% to 1. 00%. | GB/T 16484.21-2009: Chemical analysis methods of rare earth chloride and light rare earth carbonate -- Part 21: Determination of iron oxide content. 1, 10-phenanthroline spectrophotometry
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Chemical analysis methods of rare earth chloride and light rare earth carbonate Part 21. Determination of iron oxide content 1, 10-phenanthroline spectrophotometry.
ICS 77.120.99
H14
National Standards of People's Republic of China
Earth chloride and light rare earth carbonate chemical analysis methods
Determination of iron oxide content. Part 21
1,10 phenanthroline spectrophotometry
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 2,116,484.
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. Ganzhou Nonferrous Metallurgy Research Institute, Jiangsu Yixing Willy into the new Rare Earth Co., Ltd.
The main drafters of this section. Tong Ling, Li Na, high rookie.
The drafters of some of the participants. Li Ying, Liu Hong, Gu Guojun.
Earth chloride and light rare earth carbonate chemical analysis methods
Determination of iron oxide content. Part 21
1,10 phenanthroline spectrophotometry
1 Scope
GB/T 16484 provisions of this part of the determination of earth chloride and light rare earth carbonate, iron oxide content.
This section applies to the determination of earth chloride and light rare earth carbonate, iron oxide content. Measurement range. 0.0030% to 1.00%.
2 principle of the method
The sample is dissolved in dilute hydrochloric acid with hydroxylamine hydrochloride to restore bivalent ferric iron under conditions of acidity of pH4 ~ pH6, divalent iron ions
And phenanthroline color, measured at 510nm wavelength spectrophotometer absorbance.
3 Reagents and materials
3.1 hydrochloric acid (ρ1.19g/mL), pure class distinctions.
3.2 Hydrogen peroxide (30%).
Hydrochloride 3.3 (1 + 5).
3.4 hydroxylamine hydrochloride (100g/L).
3.5 1,10-phenanthroline solution (10g/L). Weigh 1g1,10- phenanthroline was dissolved in absolute ethanol, diluted with water to 100mL,
Mix well.
3.6 citric acid solution. (300g/L).
3.7 with saturated sodium acetate solution.
3.8 iron standard stock solution. Weigh 0.1000g iron [w1 (Fe) > 99.9%] in 150mL beaker, add 30mL of hydrochloric acid (3.3) Low
Was heated until complete dissolution temperature, cooled to room temperature. Moved into 1000mL volumetric flask and dilute to volume, and mix. This solution containing 1mL
0.1mg iron.
3.9 iron standard solution. Pipette iron standard stock solution (3.8) 10mL to 100mL volumetric flask, dilute with water to volume, and mix. this
1mL solution containing 10μg iron.
4 Instrument
Spectrophotometer.
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.
Step 6 Analysis
6.1 Sample
Table 1 sample was weighed, accurate to 0.0001g.
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