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GB/T 4701.6-2008: Ferrotitanium -- Determination of aluminium content -- EDTA titrimetric method
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Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
GB/T 4701.6-2008	English	169	Add to Cart	3 days [Need to translate]	Ferrotitanium -- Determination of aluminium content -- EDTA titrimetric method
GB/T 4701.6-1984	English	199	Add to Cart	2 days [Need to translate]	Methods for chemical analysis of ferrotitanium--The 8-hydoxyquinoline volumetric method for the determination of aluminum content

GB/T 4701.6-2008: Ferrotitanium -- Determination of aluminium content -- EDTA titrimetric method

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Ferrotitanium. Determination of aluminium content. EDTA titrimetric method ICS 77.100 H11 National Standards of People's Republic of China Replacing GB/T 4701.6-1984 Ilmenite aluminum content - EDTA titration Posted 2008-05-13 2008-11-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This Part replaces GB/T 4701.6-1984 "Methods for chemical analysis of ferrotitanium 8-hydroxy quinoline volumetric method for determination of aluminum content." This portion of the GB/T 4701.6-1984 compared, mainly for the following technical modifications. --- Sample volume is adjusted by the 0.50g 0.25g; --- Nitric acid, hydrofluoric acid, sulfuric acid decomposition test material, residue for recycling instead of hydrochloric acid, nitric acid decomposition of the sample; --- Using hydrochloric acid - hexamethylenetetramine separation of interfering elements, instead of 8-hydroxy quinoline process separation of interfering elements; --- Instead of using EDTA titration adding an excess of potassium bromate standard titration solution, adding potassium iodide to generate iodine starch as a means Illustrated agent, sodium thiosulfate standard titration solution titration method. This part is proposed by the China Iron and Steel Association. This section is under the jurisdiction of Metallurgical Industry Information Standards Institute. This section is drafted. Sinosteel Jilin Ferroalloy Co., Ltd. The main drafters of this section. high Yumin, Liu, Yuan Ping, Zhang Guangrong. This part of the standard replaces the previous editions are. --- GB/T 4701.6-1984. Ilmenite aluminum content - EDTA titration Warning. Use of this section shall be a person experiences regular laboratory work. This section does not indicate that all possible security issues. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.

1 Scope

This section specifies the determination of aluminum content of ilmenite EDTA titration. This section applies to the determination of aluminum content ilmenite, measurement range (mass fraction). 3.00% - 12.00%.

2 Normative references

The following documents contain provisions which, through reference in this text, constitute provisions of this part. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this section, however, encourage the parties to this part of the research agreement Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB/T 4010 alloy chemical analysis and preparation of samples Principle 3 Sample with nitric acid, hydrofluoric acid, sulfuric acid decomposition by hexamethylenetetramine, alkali after separation, the filtrate to adjust the pH, addition of excess EDTA Standard Solution to PAN as indicator drop back titration of excess EDTA standard solution titration using copper standard solution, then add fluoride Sodium replacement of aluminum, copper standard titration solution and then titrated according to standard titration solution of copper consumption, calculate the content of aluminum.

4 Reagents and materials

Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled water or its equivalent purity water. 4.1 sodium bisulfate, solid. 4.2 nitric acid, ρ1.42g/mL. 4.3 hydrofluoric acid, ρ1.15g/mL. 4.4 hydrochloride, ρ1.19g/mL. 4.5 Hydrogen peroxide, ρ1.10g/mL. 4.6 ammonia, ρ0.90g/mL. HCl 4.7, 1 + 1. 4.8 HCl, 1 + 99. Sulfate 4.9, 1 + 1. 4.10 hexamethylenetetramine solution, 250g/L. 4.11 hexamethylenetetramine lotion, 5g/L. 4.12 sodium hydroxide solution, 500g/L. 4.13 sodium fluoride solution, 50g/L. 4.14 acetic acid - ammonium acetate buffer solution Weigh 200g of ammonium acetate was dissolved in water, was added 10mL of acetic acid, diluted with water to 1000mL, Mix well. 4.15 mandelic acid solution, 50g/L. 4.16 aluminum standard solution 4.16.1 Weigh 1.0000g high purity aluminum (≥99.99%) in 400mL Teflon beaker, sodium hydroxide solution was added 100mL (100g/L) dissolved completely low-temperature heating, cooling, hydrochloric acid (4.7) and neutralized to dissolve the precipitate excess 20mL, cooled to room temperature, transferred to ...