GB/T 22661.7-2008 English PDF

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GB/T 22661.7-2008: Chemical analysis methods of potassium fluoborate -- Part 7: Determination of sodium content -- Flame atomic absorption spectrometric method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 22661.7-2008	139	Add to Cart	3 days	Chemical analysis methods of potassium fluoborate -- Part 7: Determination of sodium content -- Flame atomic absorption spectrometric method	Valid

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Basic data

Standard ID: GB/T 22661.7-2008 (GB/T22661.7-2008)
Description (Translated English): Chemical analysis methods of potassium fluoborate -- Part 7: Determination of sodium content -- Flame atomic absorption spectrometric method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H61
Classification of International Standard: 77.120.10
Word Count Estimation: 6,662
Date of Issue: 2008-12-29
Date of Implementation: 2009-11-01
Quoted Standard: GB/T 22661.1-2008
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 boric acid and potassium fluoride sodium content. This section applies to the determination of boric acid and potassium fluoride sodium content. Measuring range: �� 0. 5%.

GB/T 22661.7-2008: Chemical analysis methods of potassium fluoborate -- Part 7: Determination of sodium 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 potassium fluoborade Part 7. Determiantion of sodium content Flame atomic absorption spectrometric method ICS 77.120.10 H61 National Standards of People's Republic of China Chemical analysis methods of potassium fluoroborate Part 7. Determination of sodium content 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 22661 "potassium fluoroborate chemical analysis method" is divided into 10 parts. --- Part 1. Preparation and storage of test samples; --- Part 2. Determination of the weight of water in the wet method; --- Part 3. Determination of potassium fluoride boric acid sodium hydroxide 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 content - Molybdenum blue spectrophotometric method; --- Part 7. Determination of sodium content by flame atomic absorption spectrometry; --- Part 8. Determination of the free boronic acid sodium volumetric method; --- Part 9. Determination of the chlorine content of mercuric nitrate volumetric method; --- Part 10. Determination of phosphorus pentoxide content - Molybdenum blue spectrophotometric method. This section GB/T 22661 Part 7. 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 drafted. Fluoride Chemicals Co., Ltd. Participated in the drafting of this section. Hunan Nonferrous fluorine chemical limited liability company, Aluminum Corporation of China Zhengzhou Research Institute, Hengyang City State Friends of Chemical Technology Co., Ltd. The main drafters of this section. Xue Xu Jin, Shi Xiuhua, Li Yongqiang, Guoxian Hui, Wang Hui, Chen Yichun, Zhu Liang, Li Zhijian, Bai Xianghua, Shin Ji flowers, Liu Zhihong Huang Ju in particular, Liu Min. Chemical analysis methods of potassium fluoroborate Part 7. Determination of sodium content Flame Atomic Absorption Spectrometry

1 Scope

This section GB/T 22661 specifies the method for determination of potassium fluoroborate in sodium content. This section applies to the determination of potassium fluoroborate in sodium content. Measuring range. ≤0.5%.

2 Normative references

The following documents contain provisions which, through reference GB/T 22661 in this section constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB/T 22661.1-2008 Chemical analysis methods of potassium fluoroborate Part 1. Preparation and storage of test samples

3 Method summary

Sample with sulfuric catch fluorine, fuming sulfuric acid heated to take to make hydrochloric acid and dissolved in water after use, in the presence of strontium chloride, atomic absorption spectrometer wavelength 589.6nm at the air - acetylene flame measured sodium content.

4 Reagents

Sulfuric acid 4.1. 1 + 1. 4.2 HCl. 1 + 1. Nitrate 4.3. 1 + 1. Strontium chloride 4.4. 100g/L. Weigh 25.00g strontium chloride in the beaker, add 150mL water, dissolved by heating and then diluted to 250mL flask, shake, spare. 4.5 Sodium standard stock solution. Weigh accurately 1.2717g previously dried and cooled in the dryer sodium chloride reference 105 ℃ ± 5 ℃, Placed in 250mL beaker, add water, dissolved and transferred to 500mL volumetric flask, dilute with water to volume, and mix. This solution containing 1mL 1.0mg sodium. 4.6 Sodium standard solution. Pipette 10.00mL sodium standard stock solution (4.5) in 250mL volumetric flask, dilute with water to volume, and mix. This solution 1mL containing 0.04mg sodium. 5. Apparatus 5.1 platinum dish. flat, diameter 80mm, height 35mm. 5.2 Atomic absorption spectrometer, with a sodium hollow cathode lamp.

6 Sample

The specimen shall comply with GB/T 22661.1 requirements in 3.3. ......

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