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GB/T 8704.9-2009 English PDF

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GB/T 8704.9-2009: Ferrovanadium -- Determination of manganese content -- The potassium periodate oxidation photometric method and flame atomic absorption spectrometric method
Status: Valid

GB/T 8704.9: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 8704.9-2009English189 Add to Cart 3 days [Need to translate] Ferrovanadium -- Determination of manganese content -- The potassium periodate oxidation photometric method and flame atomic absorption spectrometric method Valid GB/T 8704.9-2009
GB/T 8704.9-1994English279 Add to Cart 3 days [Need to translate] Methods for chemical analysis of ferrovanadium. The potassium periodate oxidation photometric method and flame atomic absorption spectrometric method for determination of manganese content Obsolete GB/T 8704.9-1994

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Basic data

Standard ID GB/T 8704.9-2009 (GB/T8704.9-2009)
Description (Translated English) Ferrovanadium -- Determination of manganese content -- The potassium periodate oxidation photometric method and flame atomic absorption spectrometric method
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H11
Classification of International Standard 77.100
Word Count Estimation 8,827
Date of Issue 2009-07-15
Date of Implementation 2010-04-01
Older Standard (superseded by this standard) GB/T 8704.9-1994
Quoted Standard GB/T 4010
Regulation (derived from) National Standard Approval Announcement 2009 No.9 (Total No.149)
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 spectrophotometric determination of high potassium iodate and flame atomic absorption spectrometry vanadium iron manganese content. This section applies to the determination of vanadium iron and manganese content.

GB/T 8704.9-2009: Ferrovanadium -- Determination of manganese content -- The potassium periodate oxidation photometric method and flame atomic absorption spectrometric method


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Ferrovanadium.Determination of manganese content.The potassium periodate oxidation photometric method and flame atomic absorption spectrometric method ICS 77.100 H11 National Standards of People's Republic of China Replacing GB/T 8704.9-1994 Determination of vanadium content of Fe and Mn The potassium periodate photometric and flame atomic absorption spectrometry Posted 2009-07-15 2010-04-01 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 8704.9-1994 "Methods for chemical analysis of ferrovanadium potassium periodate photometric and flame atomic absorption spectrometric measurement method Given the amount of manganese. " This portion of the GB/T 8704.9-1994 comparison, the main changes are. --- Remove the flame atomic absorption spectrometry Appendix A. This part is proposed by the China Iron and Steel Association. This part of pig iron and ferroalloy by the National Standardization Technical Committee. This section is drafted. Sichuan Investment Emei Ferroalloy (Group) Co., Ltd. The main drafters of this section. should Tang Hua, Fang Yan. This part of the standard replaces the previous editions are. --- GB/T 8704.9-1994. Determination of vanadium content of Fe and Mn The potassium periodate photometric and flame atomic absorption spectrometry Warning --- Use this section shall be a person experiences regular laboratory work. This section does not point out all possible security asked question. 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 GB/T 8704 regulations using potassium periodate photometric and flame atomic absorption spectrometry determination of vanadium in the iron and manganese content. This section applies to the determination of vanadium iron and manganese content. Potassium periodate spectrophotometric measurement range (mass fraction) of 0.05% to 0.60%; the flame Atomic Absorption Spectrometry range (mass fraction) 0.10% to 1.00%.

2 Normative references

The following documents contain provisions cited by GB/T 8704 to the present, 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 4010 alloy chemical analysis and preparation of samples 3 Method One. potassium periodate photometric method 3.1 Principle Samples with sulfuric acid - phosphoric acid dissolved in potassium periodate oxidation of manganese to permanganate, 525nm wavelength measured absorbance on a spectrophotometer degree. Quality on the calibration curve Richard manganese content in the sample is calculated in manganese. 3.2 Reagents and materials Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled water or its equivalent purity water. 3.2.1 High potassium iodate, solid. 3.2.2 phosphoric acid, ρ1.70g/mL. 3.2.3 nitrate, ρ1.42g/mL. 3.2.4 hydrofluoric acid, ρ1.15g/mL. 3.2.5 sulfate, 1 + 4. 3.2.6 EDTA (edetate disodium dihydrate) was added, 100g/L. Weigh 100g of disodium ethylenediamine tetraacetate dihydrate 200mL water (C10H14N2O8Na2 · 2H2O) was dissolved in 5mL containing ammonium hydroxide (ρ0.90g/mL), and diluted with water 1000mL. 3.2.7 does not contain water reducing substance. in 1000mL of water were added 20mL sulfuric acid (1 + 1), adding a small amount under the micro-boiling state (About 2g) potassium periodate (3.2.1), and held for about 10min. Cooled, stored in a glass bottle and set aside. 3.2.8 Manganese standard solution. Weigh 0.1000g Jinzhumeng [mass fraction is greater than 99.9%, pre-washed to remove table in sulfuric acid (5 + 95) Oxide surfaces, removed, washed with water immediately clean and washed 2 or 3 times with ethanol, and air-dried to use] 300mL beaker was placed Was added 20mL of hydrochloric acid (1 + 1), 20mL sulfuric acid (1 + 1), dissolved by heating, and evaporated to take the drive out white smoke of sulfuric acid, hydrochloric acid, cooled to room temperature. Moved into 1000mL volumetric flask, dilute with water to volume, and mix. This solution 1mL manganese 100μg. 3.3 Instrument Analysis using common laboratory instruments.

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