|
US$229.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 18114.2-2010: Chemical analysis method of rare earth concentrates -- Part 2: Determination of oxide thorium content
Status: Valid GB/T 18114.2: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 18114.2-2010 | English | 229 |
Add to Cart
|
3 days [Need to translate]
|
Chemical analysis method of rare earth concentrates -- Part 2: Determination of oxide thorium content
| Valid |
GB/T 18114.2-2010
|
| GB/T 18114.2-2000 | English | 199 |
Add to Cart
|
2 days [Need to translate]
|
Methods for chemical analysis of monazite concentrates. Determination of thorium oxide content
| Obsolete |
GB/T 18114.2-2000
|
PDF similar to GB/T 18114.2-2010
Basic data | Standard ID | GB/T 18114.2-2010 (GB/T18114.2-2010) | | Description (Translated English) | Chemical analysis method of rare earth concentrates -- Part 2: Determination of oxide thorium content | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H14 | | Classification of International Standard | 77.120.99 | | Word Count Estimation | 10,155 | | Date of Issue | 1/14/2011 | | Date of Implementation | 11/1/2011 | | Older Standard (superseded by this standard) | GB/T 18114.2-2000 | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 2 of 2011 | | Issuing agency(ies) |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 Determination of rare earth concentrates in the amount of thorium oxide. This Standard is applicable to the determination of thorium oxide content of rare earth concentrates. Method 1 Measurement range: 0. 0020% to 0. 30%; Method 2 Measurement range: > 0. 30% ~ 8. 00%. | GB/T 18114.2-2010: Chemical analysis method of rare earth concentrates -- Part 2: Determination of oxide thorium content
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Chemical analysis method of rare earth concentrates Part 2. Determination of oxide thorium content
ICS 77.120.99
H14
National Standards of People's Republic of China
Replacing GB/T 18114.2-2000
Methods for chemical analysis of rare earth concentrates
Part 2. Determination of thorium oxide content
Part 2. Determinationofoxidethoriumcontent
Issued on. 2011-01-14
2011-11-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 18114 "Methods for chemical analysis of rare earth concentrates" is divided into 11 parts.
--- Part 1. Determination of total rare earth oxide gravimetric method;
--- Part 2. Determination of thorium oxide content;
--- Part 3. Determination of calcium oxide content;
--- Part 4. niobium oxide, zirconium oxide, titanium oxide content - Inductively coupled plasma atomic emission spectrometry;
--- Part 5. aluminum oxide content - Inductively coupled plasma atomic emission spectrometry;
--- Part 6. Determination of the amount of silica;
--- Part 7. Determination of the amount of iron oxide dichromate method;
--- Part 8. fifteen rare earth element oxide with components measured by inductively coupled plasma atomic emission spectrometry;
--- Part 9. Determination of the amount of phosphorus pentoxide bismuth molybdenum blue spectrophotometric method;
--- Part 10. Determination of moisture content - Gravimetric method;
--- Part 11. Determination of the amount of fluorine EDTA titration.
This is Part 2.
This part is GB/T 18114.2-2000 "Methods for chemical analysis of monazite concentrates - Determination of thorium oxide content" amendment.
Section compared with the GB/T 18114.2-2000, major changes in the following.
--- The measurement method for adjusting a plasma emission spectrometry with plasma mass spectrometry by the gravimetric method;
--- The measurement range of 2.00% - 7.00% by the adjustment of 0.0020% - 8.00%.
This part of the National Standardization Technical Committee of rare earth (SAC/TC229) centralized.
This section is Baotou Rare Earth Research Institute, China Nonferrous Metals Industry Institute of Standards Metrology and Quality is responsible for drafting.
Part 1 was drafted by the Ganzhou Nonferrous Metallurgy Research Institute.
Method 1 of this section by the Baotou Rare Earth Research Institute, Inner Mongolia Baotou Steel Rare Earth (Group) Hi-Tech Company participated in the drafting.
The main drafters of this Part 1. Pan Jianzhong, Zhongdao Guo, Liu Bolu.
Method 1 of this section participate drafters. Do Muoi, Zhang Lifeng, Cao Junjie, Yao Yuanfang, Yang Chunhong.
Method 2 This part was drafted by Ganzhou Nonferrous Metallurgy Research Institute.
Method 2 of this section by the Baotou Rare Earth Research Institute, participated in the drafting of Hunan Institute of rare earth materials.
The main drafters of this section Method 2. Liu Hong, Li Ying, Wang Linsheng.
Method 2 of this section participate drafters. Liu Xiaojie, Li Yumei, Liu Rongli, a National Day.
This part of the standard replaces the previous editions are.
--- GB/T 18114.2-2000.
Methods for chemical analysis of rare earth concentrates
Part 2. Determination of thorium oxide content
1 Scope
GB/T 18114 in the provisions of this part of the determination of thorium oxide content of rare earth concentrates.
This section applies to the determination of rare earth concentrates of thorium oxide content. Method 1 measuring range. 0.0020% to 0.30%; the second measurement method
Range. > 0.30% - 8.00%.
Method 1 Inductively Coupled Plasma Mass Spectrometry
2 principle of the method
Sample with sodium hydroxide - fusion with sodium peroxide decomposition, separation of silicon, aluminum, sodium, with nitric and perchloric damage filter paper and precipitate was dissolved in dilute
Acid medium, ionized argon plasma source, direct plasma mass spectrometry, standard method for calibration.
3 Reagents and materials
3.1 sodium hydroxide.
3.2 sodium peroxide.
Nitrate 3.3 (ρ1.42g/mL).
3.4 perchloric acid (ρ1.67g/mL).
3.5 hydrochloride (11).
3.6 NaOH wash (20g/L).
3.7 Nitrate (1199).
3.8 thoria standard stock solution. Weigh accurately 0.1000g thorium dioxide (w (ThO2) ≥99.95%, already at 110 ℃ drying) to
250mL beaker, was added 10mL of hydrochloric acid (ρ1.19g/mL) and 0.5mL of hydrofluoric acid (ρ1.14g/mL), dissolved by heating, added 2mL
Perchloric acid (3.4) and evaporated to a white smoke shape until wet salt, cooled, dissolved in 5mL hydrochloric acid (3.5) and treated with hydrochloric acid (19) at constant volume 100mL
Flask, and mix the solution 1mL containing 1mg thorium dioxide.
3.9 thoria standard solution. Pipette 1.00mL thoria accurate standard stock solution (3.8), in 1000mL volumetric flask.
20mL of nitric acid (11), diluted with water to the mark, and mix the solution 1mL containing 1μg thorium oxide.
3.10 indium standard stock solution. Weigh accurately 1.0000g metal indium (w (In) ≥99.9%) in 250mL beaker, add 20mL
Hydrochloric acid (3.5), placed on a water bath heated to dissolve, cooled in 1000mL volumetric flask, and mix the solution 1mL 1mg containing indium.
3.11 indium internal standard solution. Pipette 1.00mL indium standard stock solution (3.10) in 1000mL flask, add 100mL nitric acid
(3.3), diluted with water to volume, and mix this solution 1mL containing indium 1μg.
3.12 Argon. [w (Ar) ≥99.99%].
4 Instrument
Inductively coupled plasma mass spectrometry. mass resolution better than (0.8 ± 0.1) amu.
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 18114.2-2010_English be delivered?Answer: Upon your order, we will start to translate GB/T 18114.2-2010_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of GB/T 18114.2-2010_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 18114.2-2010_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay. Question 5: Should I purchase the latest version GB/T 18114.2-2010?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 18114.2-2010 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.
|