GB/T 31312-2014 English PDF

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GB/T 31312-2014: Metallurgical grade fluorspar -- Determination of antimony content -- Solvent extraction atomic absorption spectrometric method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 31312-2014	259	Add to Cart	3 days	Metallurgical grade fluorspar -- Determination of antimony content -- Solvent extraction atomic absorption spectrometric method	Valid

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Basic data

Standard ID: GB/T 31312-2014 (GB/T31312-2014)
Description (Translated English): Metallurgical grade fluorspar -- Determination of antimony content -- Solvent extraction atomic absorption spectrometric method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: D52
Classification of International Standard: 73.080
Word Count Estimation: 11,127
Date of Issue: 12/5/2014
Date of Implementation: 9/1/2015
Quoted Standard: GB/T 6005; GB/T 6682; GB/T 22564
Adopted Standard: ISO 9504-1993, MOD
Regulation (derived from): Announcement of Newly Approved National Standards 2014 No. 27
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 solvent extraction of antimony atom metallurgical grade fluorspar Determination of absorption spectroscopy. This standard applies to antimony content equal to or greater than 0.001 0% (mass fraction) of metallurgical grade fluo

GB/T 31312-2014: Metallurgical grade fluorspar -- Determination of antimony content -- Solvent extraction 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.
Metallurgical grade fluorspar - Determination of antimony content - Solvent extraction atomic absorption spectrometric method ICS 73.080 D52 National Standards of People's Republic of China Determination of antimony content of metallurgical grade fluorspar Solvent Extraction - Atomic Absorption Spectrometry (ISO 9504.1993, MOD) Issued on. 2014-12-05 2015-09-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard uses the redrafted law revision using ISO 9504.1993 "Determination of metallurgical grade fluorspar solvent extraction atomic absorption antimony content Income spectroscopy. " This standard and ISO 9504.1993 as compared to the main job of the following changes. --- Normative references used in place of national standards with international standards corresponding to an increase of GB/T 6682 analytical laboratory use regulation Grid and test methods; --- Increase the work requirement indicators atomic absorption spectrometer; --- Instrument 5.2 platinum dish is amended as platinum dish or polytetrafluoroethylene beaker, funnel volume 5.4 is amended as 125mL; --- Increasing the number of measurements of the sample; --- Increase in the content of the calculation results are shown; --- Increasing the precision of the standard; --- Added Appendix A to accept the results of sample analysis program flowchart; --- Calcium sulfate and antimony determination without interference Appendix C to determine wrote. The standard proposed by China Iron and Steel Association. This standard by the National Steel Standardization Technical Committee (SAC/TC183) centralized. This standard was drafted. Ningbo Inspection and Quarantine Institute of Science and Technology, Metallurgical Industry Information Standards Institute. The main drafters of this standard. Zheng Lin, Lin force, Weng Donghai, Chen Jianguo, Wang Qian, Caoguo Zhou, Zhou Jie, Chou Jinhui, Wang Jiang. Determination of antimony content of metallurgical grade fluorspar Solvent Extraction - Atomic Absorption Spectrometry Warning --- personnel should use this standard regular laboratory work experience. This standard 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 standard specifies the solvent extraction of antimony atom metallurgical grade fluorspar Determination of absorption spectroscopy. This standard applies to antimony content equal to or greater than 0.0010% (mass fraction) of metallurgical grade fluorspar products.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. Basic dimensions GB/T 6005 Test sieves - Metal wire cloth, perforated plate and electroformed sheet mesh (GB/T 6005- 2008, ISO 565.1990, MOD) GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-2008, ISO 3696. 1987, MOD) GB/T 22564 fluorite sampling and sample preparation (GB/T 22564-2008, ISO 8868. 1989, IDT) Principle 3 Sample in a mixed solution of nitric acid, hydrofluoric acid and perchloric acid digested, adding sulfuric acid and smoke, hydrochloric acid dissolved salts. Antimony from added Dilute hydrochloric acid solution of ascorbic acid and potassium iodide extracted into a solution of 4-methyl-2-pentanone tri-n-octyl phosphine oxide and the. The extract was introduced into the air - Acetylene flame atomic absorption spectrometer, the absorbance was measured at 217.6nm, based on a quantitative analyte content off between the absorbance Line, calculate the amount of analyte.

4 Reagents

Unless otherwise stated, the analysis using only the analytical reagent. Water is in line with GB/T 6682 provisions of its purity distilled water or fairly Of water. 4.1 4-methyl-2-pentanone. Nitric acid 4.2, ρ = 1.39g/mL. Hydrofluoric acid 4.3, ρ = 1.13g/mL. Perchloric acid 4.4, ρ = 1.68g/mL. Hydrochloric acid 4.5, ρ = 1.18g/mL. Sulfuric acid 4.6, ρ = 1.84g/mL. 4.7 hydrochloric acid, 11. 4.8 hydrochloric acid, 19. ......

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