HOME   Cart(0)   Quotation   About-Us Policy PDFs Standard-List
www.ChineseStandard.net Database: 189759 (19 Oct 2025)

GB/T 22660.7-2008 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 22660.7-2008: Chemical analysis methods of lithium fluoride -- Part 7: Determination of iron content -- Orthophenanthroline photometric method
Status: Valid
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 22660.7-2008English139 Add to Cart 3 days [Need to translate] Chemical analysis methods of lithium fluoride -- Part 7: Determination of iron content -- Orthophenanthroline photometric method Valid GB/T 22660.7-2008

PDF similar to GB/T 22660.7-2008


Standard similar to GB/T 22660.7-2008

GB/T 27677   GB/T 26492.1   GB/T 16474   GB/T 22660.4   GB/T 22660.5   GB/T 22660.2   

Basic data

Standard ID GB/T 22660.7-2008 (GB/T22660.7-2008)
Description (Translated English) Chemical analysis methods of lithium fluoride -- Part 7: Determination of iron content -- Orthophenanthroline photometric method
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H60
Classification of International Standard 77.120
Word Count Estimation 6,699
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, iron oxide content. This section applies to the determination of lithium fluoride, iron oxide content. Measurement range: �� 0. 20%.

GB/T 22660.7-2008: Chemical analysis methods of lithium fluoride -- Part 7: Determination of iron content -- Orthophenanthroline photometric 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 7. Determination of iron content Orthophenantholine photometric method. ICS 77.120 H60 National Standards of People's Republic of China Methods for chemical analysis of lithium fluoride Part 7. Determination of iron oxide content Phenanthroline spectrophotometry 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 is Part 7 GB/T 22660 of. 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. Shi Xiuhua, Xue Xu Jin, Vicky division, army Xu, Fan Liansheng, Wang Hui, Zhu Liang, Li Zhijian, Zhao Baofu, even Mingxia. Methods for chemical analysis of lithium fluoride Part 7. Determination of iron oxide content Phenanthroline spectrophotometry

1 Scope

This section GB/T 22660 specifies the method for determination of lithium fluoride iron oxide content. This section applies to the determination of lithium fluoride, iron oxide content. Measuring range. ≤0.20%.

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. Preparation and storage of test samples.

3 Method summary

Sample with sodium carbonate and boric acid mixed solvent melt, after acidification with hydroxylamine hydrochloride iron (Ⅲ) reduction in acetate buffer medium (PH3.5 ~ pH4.2), iron (Ⅱ) with o-phenanthroline to form a colored complex in a spectrophotometer at 510nm wavelength absorption measured Luminosity.

4 Reagents

Anhydrous sodium carbonate 4.1. AR. 4.2 boric acid. AR. 4.3 HCl (1 + 1). 4.4 nitric acid (1 + 1). 4.5 hydroxylamine hydrochloride (10g/L). 4.6 phenanthroline solution (2.5g/L). 4.7 buffer solution (pH4.9). Weigh 272g of sodium acetate trihydrate were dissolved in 500mL of water, 240mL of glacial acetic acid was added (ca. 17.4mol/L). 4.8 sodium acetate solution (500g/L). 4.9 acetic acid (19 + 1). 4.10 ferric oxide standard stock solution. 1mL containing 0.200mg ferric oxide, the following two ways can choose one. 4.10.1 Weigh 0.982g ferrous sulfate hexahydrate amine [Fe (NH4) 2 (SO4) 2 · 6H2O], placed in 100mL beaker, dissolved in water After adding 20mL sulfuric acid (ρ1.84g/mL), transferred to 1L volumetric flask, dilute to volume, and mix. 4.10.2 Weigh 0.200g at 600 ℃ ignition advance and cooled in the dryer ferric oxide [(Fe2O3) > 99.90%] to On, placed in 100mL beaker, add 10mL of hydrochloric acid (ρ1.19g/mL), was heated slowly until completely dissolved, cooled, transferred to 1L volumetric flask, Dilute to volume, and mix. 4.11 ferric oxide standard solution. Pipette 50.00mL ferric oxide standard stock solution (4.10), placed in 1L volumetric flask, dilute with water to volume, and mix. this

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 22660.7-2008_English be delivered?

Answer: Upon your order, we will start to translate GB/T 22660.7-2008_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 22660.7-2008_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 22660.7-2008_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 [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.