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GB/T 6730.59-2017 English PDF

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GB/T 6730.59-2017: Iron ores -- Determination of manganese content -- Flame atomic absorption spectrometric method
Status: Valid

GB/T 6730.59: Historical versions

Standard IDUSDBUY PDFLead-DaysStandard Title (Description)Status
GB/T 6730.59-2017279 Add to Cart 3 days Iron ores -- Determination of manganese content -- Flame atomic absorption spectrometric method Valid
GB/T 6730.59-2005479 Add to Cart 3 days Iron ores -- Determination of manganese content -- Flame atomic absorption spectrometric method Obsolete

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Basic data

Standard ID: GB/T 6730.59-2017 (GB/T6730.59-2017)
Description (Translated English): Iron ores -- Determination of manganese content -- Flame atomic absorption spectrometric method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: D31
Classification of International Standard: 73.060.10
Word Count Estimation: 14,138
Date of Issue: 2017-09-07
Date of Implementation: 2018-06-01
Older Standard (superseded by this standard): GB/T 6730.59-2005
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

GB/T 6730.59-2017: Iron ores -- Determination of manganese 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.
Iron ores - Determination of manganese content - Flame atomic absorption spectrometric method ICS 73.060.10 D31 National Standards of People's Republic of China Replacing GB/T 6730.59-2005 Iron ores - Determination of manganese content Flame atomic absorption spectrometry (ISO 9682-1.2009, Ironores-Determination of Chinese content- Part 1.Flameatomicabsorptionspectrometricmethod, MOD) 2017-09-07 Posted 2018-06-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

GB/T 6730 "iron ore" is divided into dozens of sections. This section GB/T 6730 Part 59. This section drafted in accordance with GB/T 1.1-2009 given rules. This Part replaces GB/T 6730.59-2005 "Determination of manganese content of iron ore flame atomic absorption spectrometry", this section and GB/T 6730.59-2005 In comparison, except for some editorial changes, the main technical changes are as follows. ---.2005 version of "acetylene - nitrous oxide combustion flame" to "acetylene - air combustion flame"; --- The.2005 version of the sample decomposition method acid-soluble method was modified; --- The.2005 version of the melting method in the molten alkali reagent sodium carbonate and boric acid mixed flux; --- The.2005 version of the calibration curve solution in the linear range, preparation methods and related test liquid fractionation and other technical conditions were modify; ---.2005 version of the "analysis of the acceptance" and "the final result of the calculation," a simplified revisions; --- The.2005 version of the acid-soluble method to re-inter-laboratory precision joint test, the new repeatability limit r and reproducibility Limit R; --- Removed the.2005 edition of Appendix B and Appendix C. This section uses the redrafted law Amendment uses ISO 9682-1.2009 "Determination of manganese content of iron ore Part 1. Flame atom Absorption Spectrometry ". This part of the technical differences with ISO 9682-1.2009 and its reasons are as follows, the provisions of these differences have been adopted in its outside pages The vertical single line (|) at the margin is marked. --- On the normative references, this section made a technical difference with the adjustment to adapt to China's technical conditions, adjust the situation Concentration reflected in the second chapter "Normative references", the specific adjustments are as follows. ● increased reference to GB/T 6379.1 (see 8.2.1); ● increase the reference GB/T 6379.2 (see 8.2.1); ● increase the reference GB/T 6682 (see Chapter 4); ● Replace ISO 7764 (ISO /IEC 6120-1), equivalent to International Standard GB/T 6730.1, with ISO 9682-1-2009 (see 6.1 and 6.2); ● increase the reference GB/T 7728 (see 5.3); ● increase the reference GB/T 8170 (see 8.2.5); ● Replace ISO 3082 (see 6.1) cited in ISO 9682-1.2009 with GB/T 10322.1 equivalent to the International Standard; ● ISO 648 referenced in ISO 9682-1.2009 is deleted (see Chapter 5 of ISO 9682-1-2009); ● Replace ISO 1042 cited in ISO 9682-1.2009 with GB/T 12806 that does not equivalently adopt international standards (see Chapter 5), GB/T 12806 compared with ISO 1042, the main technical differences are the appearance of the product requirements and inspection rules; ● increase the reference GB/T 12807 (see Chapter 5); ● Increased reference to GB/T 12808 (see Chapter 5). --- The determination of the range from "0.01% ~ 2.5%" expanded to "0.005% ~ 5.0%", because the product analysis is necessary and the method Can meet the requirements (see Chapter 1); --- "Acetylene - nitrous oxide combustion flame" to "acetylene - air combustion flame", the reason is more suitable for practical application (see paragraph 2 chapter); --- In the sample decomposition method acid-soluble acid in the acid-soluble residue recovery modified acid-soluble plus perchloric acid-fluoride decomposition method, the original As a result of acid dissolution of the sample decomposition is more complete (see 7.4.1); --- In the sample decomposition method in the alkali melting method, the melting agent is changed to a mixed flux of sodium carbonate and boric acid because the sample is decomposed Full (see 7.4.2). This part is proposed by China Iron and Steel Association. This part of the National Iron Ore and Direct Reduced Iron Standardization Technical Committee (SAC/TC317) centralized. This part of the drafting unit. Wuhan Iron and Steel (Group) Company, Metallurgical Industry Information Standards Institute. The main drafters of this section. Wen Xiangdong, Zhou Zheng, Chen Shihua, Zhang Suizhong, Zheng Feng, Li Jie, Yu Lu Jun, Wu Lixin, Chen Zibin. This part replaces the standards previously issued as. --- GB/T 6730.59-2005. Iron ores - Determination of manganese content Flame atomic absorption spectrometry Warning --- personnel using this section should have the experience of regular laboratory work. This section does not point out all the safety issues. use It is the responsibility of those responsible to take appropriate safety and health measures and to ensure compliance with the conditions of the relevant state laws and regulations.

1 Scope

GB/T 6730 provisions of this part of the flame atomic absorption spectrometry Determination of manganese content. This section applies to natural iron ore, iron ore, sinter and pellets Determination of manganese content. Measurement range (mass fraction). Acid soluble, 0.005% ~ 5.0%; alkali melting, 0.01% ~ 3.0%.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 6379.1 accuracy and accuracy of measurement methods (accuracy and precision) Part 1. General and definitions (GB/T 6379.1- 2004, ISO 5725-1.1994, IDT) GB/T 6379.2 Accuracy (accuracy and precision) of measurement methods and results - Part 2. Determination of the weight of standard measurement methods Fundamental methods of renaturation and reproducibility (GB/T 6379.2-2004, ISO 5725-2.1994, IDT) GB/T 6682 analytical laboratory water specifications and test methods (GB/T 6682-2008, ISO 3696.1987, MOD) GB/T 6730.1 Preparation of pre-dried samples for iron ore analysis (GB/T 6730.1-2016, ISO 7764.2006, IDT) GB/T 7728 chemical analysis of chemical products - General rules of flame atomic absorption spectrometry GB/T 8170 rounded repair rules and limit values of the representation and judgment GB/T 10322.1 Iron ore sampling and sample preparation methods (GB/T 10322.1-2014, ISO 3082.2009, IDT) GB/T 12806 laboratory glassware single standard line volumetric flask (GB/T 12806-2011, ISO 1042.1998, NEQ) GB/T 12807 Laboratory glassware graduated pipette (GB/T 12807-1991, neqISO 835.1981) GB/T 12808 laboratory glassware single standard pipette

3 principle

The sample is decomposed by one of the following two methods. a) Samples of hydrochloric acid, hydrofluoric acid, nitric acid decomposition, perchloric acid smoke to drive fluorine and silicon, with hydrochloric acid dissolved salts; b) After melting with a mixed flux of sodium carbonate and boric acid, dissolve the melt with hydrochloric acid. In hydrochloric acid medium, on the atomic absorption spectrometer, with manganese hollow cathode lamp as a light source, the sample solution is injected into the air - acetylene flame, at The absorbance of the test solution is measured at a wavelength of 279.5 nm and the mass fraction of manganese is calculated on the calibration curve.

4 Reagents and materials

Unless otherwise indicated in the analysis, the use of only approved analytical reagent and in line with GB/T 6682 more than three distilled water or its The purity of water.
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