GB/T 22660.4-2008 English PDF

US$139.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 22660.4-2008: Chemical analysis methods of lithium fluoride -- Part 4: Determination of magnesium content -- Flame atomic absorption spectrometric method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 22660.4-2008	139	Add to Cart	3 days	Chemical analysis methods of lithium fluoride -- Part 4: Determination of magnesium content -- Flame atomic absorption spectrometric method	Valid

Similar standards

GB/T 27677   GB/T 26492.1   GB/T 16474   GB/T 22660.5   GB/T 22660.6   GB/T 22660.2   

Basic data

Standard ID: GB/T 22660.4-2008 (GB/T22660.4-2008)
Description (Translated English): Chemical analysis methods of lithium fluoride -- Part 4: Determination of magnesium content -- Flame atomic absorption spectrometric method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H60
Classification of International Standard: 77.120
Word Count Estimation: 6,626
Date of Issue: 2008-12-29
Date of Implementation: 2009-11-01
Quoted Standard: GB/T 22660.1-2008
Regulation (derived from): National Standard Approval Announcement 2008 No.23 (Total No.136)
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 determination of lithium fluoride and magnesium content. This section applies to the determination of lithium fluoride, magnesium content. Measurement range: �� 0. 15%.

GB/T 22660.4-2008: Chemical analysis methods of lithium fluoride -- Part 4: Determination of magnesium content -- Flame atomic absorption spectrometric method

---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 methods of lithium fluoride Part 4. Determiantion of magnesium content Flame atomic absorption spectrometric method ICS 77.120 H60 National Standards of People's Republic of China Methods for chemical analysis of lithium fluoride Determination of magnesium content. Part 4 Flame Atomic Absorption Spectrometry Posted 2008-12-29 2009-11-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 22660 "Methods for chemical analysis of lithium fluoride" is divided into eight sections. --- Part 1. Preparation and storage of test samples; --- Part 2. Determination of the weight of water in the wet method; --- Part 3. Determination of distillation of fluorine content - thorium nitrate volumetric method; --- Part 4. Determination of magnesium by flame atomic absorption spectrometry; --- Part 5. Determination of calcium content by flame atomic absorption spectrometry; --- Part 6. Determination of silicon dioxide content - Molybdenum blue spectrophotometric method; --- Part 7. Determination of iron oxide content phenanthroline spectrophotometry; --- Part 8. Determination of sulfate content of barium sulfate gravimetric method. This section GB/T Part of 422,660. This part is proposed by the China Nonferrous Metals Industry Association. The non-ferrous metal part by the National Standardization Technical Committee. This section is responsible for drafting unit. Fluoride Chemicals Co., Ltd., China Nonferrous Metals Industry Standards and Metrology Institute for Quality. Participated in the drafting of this section. Hunan Nonferrous fluorine chemical limited liability company, Aluminum Corporation of China Zhengzhou Research Institute. The main drafters of this section. Li Yongqiang, Xue Xu Jin, Shi Xiuhua, Zhou Xiaoping, Wang Jianping, Chen Yichun, Zhu Liang, Li Zhijian, Lan Wen Hui, Chen Xi even. Methods for chemical analysis of lithium fluoride Determination of magnesium content. Part 4 Flame Atomic Absorption Spectrometry

1 Scope

This section GB/T 22660 specifies the method for determination of lithium fluoride and magnesium content. This section applies to the determination of lithium fluoride, magnesium content. Measuring range. ≤0.15%.

2 Normative references

The following documents contain provisions which, through reference GB/T 22660 in this section constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revised edition are not adapted to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated references, the latest edition of this adaptation section. GB/T 22660.1-2008 Chemical analysis methods of lithium fluoride - Part 1. Sample Preparation and Storage

3 Method summary

Sample was dissolved in sulfuric acid and then heated fluorine, dissolved in hydrochloric acid and water, test solution for atomic absorption spectrometer at a wavelength of 285.2nm, air - Acetylene flame measured magnesium content.

4 Reagents

4.1 sulfate (ρ1.84g/mL). 4.2 HCl (1 + 1). 4.3 Magnesium standard stock solution. Accurately weigh 0.8291g, previously dried at 110 ℃ and cooled in a desiccator reference magnesia placed 250mL beaker, add 10mL water wet, was further added 10mLHCl (4.2) was dissolved until all magnesium dissolved and transferred to 500mL Volumetric flask, dilute to the mark with water, mix, magnesium ion concentration of the solution of 1.0mg/mL. 4.4 Magnesium standard solution. Pipette 25.0mL magnesium stock standard solution in 250mL volumetric flask, dilute to the mark, mix and the concentration of magnesium ions in solution Of 0.1mg/mL.

5 instruments and equipment

5.1 platinum dish. diameter 80mm, high 35mm. 5.2 Atomic absorption spectrometer, with a magnesium hollow cathode lamp. Under optimum working conditions, who can be used to achieve the following indicators. --- Characteristic concentration. in the matrix and the measurement of the sample was consistent with the characteristic concentration of magnesium should not exceed 0.07μg/mL. --- Precision. standard solution with the highest concentration of 10 times the absorbance measurements, the standard deviation should not exceed the average absorbance of 1.0% With the lowest concentration of standard solution (not "zero" concentration of the standard) measuring the absorbance of 10 times, the standard deviation should not exceed the maximum 0.5% concentration of the standard average absorbance. --- Linear curve. The curve is divided into five sections according to concentration, than the highest and the lowest section of the absorbance difference between the absorbance difference of the segment is not Less than 0.85. ......

Image     

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 22660.4-2008_English be delivered?

Answer: Upon your order, we will start to translate GB/T 22660.4-2008_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 22660.4-2008_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 22660.4-2008_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.