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GB/T 16484.14-2009: Chemical analysis methods of rare earth chloride and light rare earth carbonate -- Part 14: Determination of phosphorus radical content -- Phosphorus-antimonate-molybdenum bule spectrophotometry
Status: Valid GB/T 16484.14: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 16484.14-2009 | English | 169 |
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Chemical analysis methods of rare earth chloride and light rare earth carbonate -- Part 14: Determination of phosphorus radical content -- Phosphorus-antimonate-molybdenum bule spectrophotometry
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GB/T 16484.14-2009
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| GB/T 16484.14-1996 | English | 199 |
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Methods for chemical analysis of rare earth chloride and carbonate--Determination of phosphorus radicle content
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GB/T 16484.14-1996
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Basic data | Standard ID | GB/T 16484.14-2009 (GB/T16484.14-2009) | | Description (Translated English) | Chemical analysis methods of rare earth chloride and light rare earth carbonate -- Part 14: Determination of phosphorus radical content -- Phosphorus-antimonate-molybdenum bule spectrophotometry | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H14 | | Classification of International Standard | 77.120.99 | | Word Count Estimation | 7,770 | | Date of Issue | 2009-09-04 | | Date of Implementation | 2010-05-01 | | Older Standard (superseded by this standard) | GB/T 16484.14-1996 | | Regulation (derived from) | National Standard Approval Announcement 2009 No.12 (Total No.152) | | Issuing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 amount of carbonic Light rare earth phosphate. This section applies to rare earth chloride, determination of the amount of carbonic Light rare earth phosphate. Measurement range 0. 0025% to 0. 10 %. | GB/T 16484.14-2009: Chemical analysis methods of rare earth chloride and light rare earth carbonate -- Part 14: Determination of phosphorus radical content -- Phosphorus-antimonate-molybdenum bule spectrophotometry
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Chemical analysis methods of rare earth chloride and light rare earth carbonate Part 14. Determination of phosphorus radical content Phosphorus-antimonate-molybdenum bule spectrophotometry
ICS 77.120.99
H14
National Standards of People's Republic of China
Replacing GB/T 16484.14-1996
Earth chloride and light rare earth carbonate chemical analysis methods
Part 14. Determination of the amount of phosphate
Antimony phosphomolybdate blue 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 Spectrometry;
--- 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 1,416,484.
This Part replaces GB/T 16484.14-1996 "rare earth chloride, carbonate, phosphate chemical analysis of rare method determining the amount."
This section compared with the GB/T 16484.14-1996, have the following main changes.
--- By the 690nm wavelength measurement was adjusted to 705nm;
--- Phosphate concentration of the standard solution containing 4μg adjusted to 1mL 1mL containing 5μg;
--- Linear range of work by the 0μg ~ 20μg adjusted 0μg ~ 30μg;
--- 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 part was drafted by the Baotou Rare Earth Research Institute.
Participated in the drafting of this section. Beijing Nonferrous Metal Research Institute, Inner Mongolia Baotou Steel Rare Earth Hi-Tech Company.
The main drafters of this section. Qian Hao, high Lizhen, Wang Haitao.
The drafters of some of the participants. Yang Ping, Chen Yun red, Wangming Zhen, Wu Guangwei.
This part of the alternative criteria previously issued as follows.
--- GB/T 16484.14-1996.
Earth chloride and light rare earth carbonate chemical analysis methods
Part 14. Determination of the amount of phosphate
Antimony phosphomolybdate blue spectrophotometry
1 Scope
GB/T 16484 provisions of this part of the determination of rare earth chloride, carbonate, phosphate amount of light rare earths.
This section applies to the rare earth carbonate, phosphate amount of light rare earth chloride determination. Measurement range. 0.0025% to 0.10%.
2 principle of the method
The sample is dissolved in acid in 0.31mol/L ~ 0.48mol/L HCl medium, phosphorus and antimony paramolybdate generated heteropoly acid, ascorbic acid
Reducing phosphorus antimony molybdenum blue complex, measuring absorbance at 705nm wavelength spectrophotometer.
3 Reagents and materials
3.1 Hydrogen peroxide (30%).
3.2 HCl (1 + 1).
3.3 hydrochloric acid (1 + 2).
3.4 hydrochloric acid (1 + 10).
3.5 nitric acid (1 + 1).
3.6 ammonia water (1 + 10), pure class distinctions, stored in plastic bottles.
3.7 paramolybdate (40g/L), pure class distinctions, stored in plastic bottles.
3.8 antimony potassium tartrate solution (3g/L).
3.9 Ascorbic acid (20g/L), with the preparation.
3.10 starch solution (10g/L), with the preparation.
3.11 phosphate standard stock solution. Weigh 0.2863g advance by 105 ℃ ~ 110 ℃ drying 1h placed in the dryer to cool to room temperature
Superior grade pure potassium dihydrogen phosphate in 250mL beaker, add 100mL water dissolved and transferred to 1000mL volumetric flask, add 20mL of nitric acid
(3.5), diluted with water to volume, and mix. This solution 1mL containing 200μg phosphate.
3.12 phosphate standard solution. Pipette 25.00mL phosphate standard stock solution (3.11) into 1000mL volumetric flask, dilute with water
Diluted to the mark, add 10mL of nitric acid (3.5), diluted with water to volume, and mix. This solution 1mL containing 5μg phosphate.
3.13 pairs nitrophenol indicator (10g/L).
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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