GB/T 11846-2015 English PDF

US$149.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 11846-2015: Determination of silicon in uranium dioxide powder and pellets by spectrophotometry
Status: Valid

GB/T 11846: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 11846-2015	149	Add to Cart	3 days	Determination of silicon in uranium dioxide powder and pellets by spectrophotometry	Valid
GB/T 11846-1989	199	Add to Cart	2 days	Uranium dioxide powder and pellets--Determination of silicon--Spectrophotometric method	Obsolete

Similar standards

GB/T 10266   GB/T 11842   GB/T 11844   

Basic data

Standard ID: GB/T 11846-2015 (GB/T11846-2015)
Description (Translated English): Determination of silicon in uranium dioxide powder and pellets by spectrophotometry
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: F46
Classification of International Standard: 27.120.30
Word Count Estimation: 7,759
Date of Issue: 2015-07-03
Date of Implementation: 2016-02-01
Older Standard (superseded by this standard): GB/T 11846-1989
Regulation (derived from): National Standard Announcement 2015 No.22
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 uranium dioxide powder and pellets - Determination of silicon method feeds, reagents and materials, apparatus and equipment, sample analysis step, the results of calculation and precision of the method. This Standard applies dioxide powder and pellets - Determination of uranium silicon, also apply to the determination of eight nuclear grade uranium oxide of silicon. Alkali fusion method to take an amount of 0.5 g sample, the measurement range of 10 ��g/g ~ 80 ��g when/g, acid digestion method for the sampling of 0.2 g, measured in the range of 10 ��g/g ~ 300 ��g/g.

GB/T 11846-2015: Determination of silicon in uranium dioxide powder and pellets by spectrophotometry

---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.
Determination of silicon in uranium dioxide powder and pellets by spectrophotometry ICS 27.120.30 F46 National Standards of People's Republic of China Replacing GB/T 11846-1989 Determination of uranium dioxide powder and pellets of silicon Issued on. 2015-07-03 2016-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard replaces GB/T 11846-1989 "uranium dioxide powder and pellets - Determination of silicon by spectrophotometry." This standard compared with GB/T 11846-1989, the main changes are as follows. --- Increased nitric - hydrofluoric acid sample dissolution method (see 6.3); --- "Range" in the measurement range increases the acid-soluble law; --- "Method summary" added sample dissolution temperature of the acid-soluble law; --- "The precision" in the table header increased the "r, R" replaced "Sr, SR", modify the printing errors, increase acid The method of solution method precision. The standard proposed by China National Nuclear Corporation. This standard by the National Standardization Technical Committee on Nuclear Energy (SAC/TC58) centralized. This standard was drafted. China Jianzhong Nuclear Fuel Limited. The main drafters of this Standard. Liang Hua, Xu Jianping, Lin Weizhi. This standard replaces the standards previously issued as follows. --- GB/T 11846-1989. Determination of uranium dioxide powder and pellets of silicon Spectrophotometry

1 Scope

This standard specifies the uranium dioxide powder and pellets - Determination of silicon method feeds, reagents and materials, apparatus and equipment, sample analysis step Suddenly, the results of calculation and precision of the method. This standard applies dioxide powder and pellets - Determination of uranium silicon, also apply to the determination of nuclear Triuranium in silicon. Alkali fusion method to take 0.5g sample volume, the measurement range of 10μg/g ~ 80μg/g; acid digestion method of sampling is 0.2g, the measurement range of 10μg/g ~ 300μg/g. The main elements of the sample of interference allowable amount. As of 30μg/g, P is 250μg/g.

2 Method summary

Nitric acid - hydrofluoric acid 60 ℃ ~ 70 ℃ or alkali fusion method decompose the sample, at a certain pH conditions, the addition of ammonium molybdate and silicon to form a silicon Molybdenum yellow, mixed acid medium, ascorbic acid was added to the silicon-molybdenum blue at the wavelength of 810nm (or 800nm) Department, with 5cm (or 3cm) Cuvette with water as a reference photometrically.

3 Reagents and materials

Unless otherwise indicated, the analysis should be used in line with national standards for gifted class pure reagents. The water meets conductivity (25 ℃) is not greater than 0.1mS/m. 3.1 Reagents 3.1.1 sodium carbonate (Na2CO3). 3.1.2 hydrofluoric acid (HF), ρ = 1.15g/mL. 3.1.3 boric acid solution, 35g/L. 3.1.4 ammonium molybdate [(NH4) 6Mo7O24 · 4H2O] solution, 50g/L, the clarified solution was used. 3.1.5 sulfuric acid solution, 1.5mol/L. 3.1.6 ascorbic acid (C6H8O6) solution, 10g/L, the solution was formulated the day of use. 3.1.7 nitric acid (HNO3), ρ = 1.40g/mL. 3.1.8 nitric acid solution by (3.1.7) formulated with water volume ratio of 1. 3.1.9 2,4-dinitrophenol ethanol solution [(NO3) 2C6H3OH], 2,4-dinitrophenol weighed 0.1g, dissolved in 100mL anhydrous Alcohol. 3.1.10 oxalic acid - sulfuric acid mixed solution, weighed 45g oxalic acid (H2C2O4 · 2H2O) in 1000mL beaker, add appropriate amount of water to dissolve After stirring at constant, sulfuric acid was slowly added to about 175mL (ρ = 1.84g/mL). After cooling to transfer 1000mL volumetric flask, add Water to the mark, into a polyethylene bottle save. 3.1.11 ammonia, before use by distillation or diffusion purified. ......

Image     

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 11846-2015_English be delivered?

Answer: Upon your order, we will start to translate GB/T 11846-2015_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 11846-2015_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 11846-2015_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+ countries

Question 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 Sales@ChineseStandard.net. 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 11846-2015?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 11846-2015 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.